Triatomine vectors of Trypanosoma cruzi in an endemic area for Chagas disease in Northeast Brazil

ABSTRACT Background: We assessed the distribution of triatomines in an endemic area for Chagas disease. Methods: This retrospective study used secondary data extracted from the Official System of the National Chagas Disease Control Program (Sistema Oficial do Programa Nacional de Controle da Doença de Chagas - SisPCDCh). Results: A total of 7,257 (725.7 ± 221.7 per year) specimens were collected from 2013 to 2022. Most of them (6,792; 93.6%) were collected in the intradomicile and 465 (6.4%) in the peridomicile. A total of 513 (7.1%) triatomines tested positive for the presence of trypomastigote forms, similar to Trypanosoma cruzi. Conclusions: The spatial analysis revealed a heterogeneous distribution of triatomines across different municipalities.

Characterization of cases and epidemiological and operational indicators of leprosy: analysis of time series and spatial distribution, Piauí state, Brazil, 2007-2021 / Caracterización de casos e indicadores epidemiológicos y operativos de la lepra: análisis de series temporales y distribución espacial, Piauí, Brasil, 20072021 / Caracterização de casos e indicadores epidemiológicos e operacionais da hanseníase: análise de séries temporais e distribuição espacial, Piauí, 2007-2021

ABSTRACT Objective To analyze epidemiological characteristics, temporal trends and spatial distribution of leprosy cases and indicators in the state of Piauí, 2007-2021. Methods This was an ecological time-series study using data from the Notifiable Health Conditions Information System, describing the spatial distribution and the temporal trend of leprosy using Prais-Winsten regression. Results A total of 17,075 new cases of leprosy were reported. There was a falling trend in the overall detection rate [annual percentage change (APC) = -6.3; 95%CI -8.1;-4.5)], detection in children under 15 years of age (APC = -8,6; 95%CI -12,7;-4,3) and detection of cases with grade 2 physical disability (APC = -4,4; 95%CI -7,0;-1,8). There was a rising trend in the proportion of multibacillary cases. Spatial distribution of the average detection rate identified hyperendemic areas in the Carnaubais, Entre Rios, Vale dos Rios Piauí e Itaueiras regions. Conclusion High leprosy detection rates were found, despite the falling trend of indicators, except the proportion of multibacillary cases.

RESUMEN Objetivo Analizar características epidemiológicas, tendencias temporales, distribución espacial de casos y indicadores de lepra en el estado de Piauí, 2007-2021. Métodos Estudio ecológico de series temporales con datos del Sistema de Información de Enfermedades de Notificación que describen la distribución espacial y la tendencia temporal de la lepra mediante la regresión de Prais-Winsten. Resultados Se notificaron 17.075 nuevos casos de lepra. Hubo tendencia decreciente en las tasas de detección general [variación porcentual anual (VPA) = -6,3; IC95% -8,1; -4,5], detección en menores de 15 años (VPA = -8,6; IC95% -12,7; -4,3), y detección de casos con discapacidad física grado 2 (VPA = -4,4; IC95%-7,0; -1,8). Hubo una tendencia creciente en la proporción de casos multibacilares. La distribución espacial de la tasa promedio de detección identificó áreas hiperendémicas en las regiones de Carnaubais, Entre Rios, Vale dos Rios Piauí y Itaueiras. Conclusión Se observaron altas tasas de detección de lepra, a pesar de la tendencia decreciente de los indicadores, excepto la proporción de casos multibacilares

RESUMO Objetivo Analisar características epidemiológicas, tendência temporal, distribuição espacial de casos e indicadores da hanseníase no estado do Piauí, 2007-2021. Métodos Estudo ecológico de séries temporais com dados do Sistema de Informação de Agravos de Notificação, descrevendo a distribuição espacial e a tendência temporal da hanseníase pela regressão de Prais-Winsten. Resultados Foram notificados 17.075 novos casos de hanseníase. A distribuição espacial da taxa média de detecção identificou áreas hiperendêmicas nas regiões Carnaubais, Entre Rios, Vale dos Rios Piauí e Itaueiras. Verificou-se tendência decrescente nas taxas de detecção geral [variação percentual anual (VPA) = -6,3; IC95% -8,1;-4,5], de detecção em menores de 15 anos (VPA = -8,6; IC95%12,7;-4,3) e de detecção de casos com grau 2 de incapacidade física (VPA = -4,4; IC95%-7,0;1,8), e tendência crescente na proporção de casos multibacilares. Conclusão Observaram-se elevadas taxas de detecção de hanseníase, apesar da tendência decrescente dos indicadores, exceto a proporção de casos multibacilares.

Correlation between Helicobacter pylori infection and gastrointestinal tumor in the physical examination population in Xi'an City / 公共卫生与预防医学

Objective To analyze the spatial distribution of Helicobacter Pylori (Hp) infection and its correlation with gastrointestinal tumors in the physical examination population of Xi'an city, and to provide reference for the prevention of gastrointestinal tumors in this area. Methods A total of 23 200 subjects who underwent physical examination in 25 public hospitals in Xi'an from January 2019 to January 2023 were selected as the research objects. The basic Information of the patients was derived through the Hospital Information System (HIS), and all subjects underwent 13C-breath test and gastroenterological endoscope. ArcGIS 10.6 software was used to draw a statistical map of Hp infection in Xi 'an for spatial autocorrelation analysis. Hp infection in patients with different gastrointestinal tumors was analyzed. Results In this study population, there were 10 858 cases of Hp infection , with an infection rate of 46.80% ; among them , 5 491 cases were male, with an infection rate of 46.60% , and 5,367 cases were female, with an infection rate of 47.01% , and there was no significant difference in the infection rate between genders (P>0.05). The prevalence of HP infection was higher in the 30-year-old and 20-year-old groups, 55.62% and 42.71%, respectively, and the infection rate showed a first increase and then a decreasing trend with age (χ2trend = 6201.21, 6945.22 , P2=13.49, 16.16, 17.27, 24.66, P<0.05 for all). Conclusion The distribution of Hp infection in the physical examination population of Xi'an city has the characteristics of spatial aggregation and is related to gastrointestinal tumor diseases. It is suggested to carry out Hp infection education for the population in key areas to prevent the occurrence of gastrointestinal tumor diseases.

Ilegítimos na transição entre o Império e a República: o caso do estado de São Paulo (1886-1900) / Illegitimacy in the transition between the Empire and the Republic: the case of the state of São Paulo (1886-1900) / Ilegítimos en la transición entre el imperio y la república: el caso del estado de São Paulo (1886-1900)

Resumo No Brasil, o estudo da condição de legitimidade (filiação) é tópico que vem sendo tratado pela literatura especializada, tanto no âmbito da História quanto no da Demografia Histórica, sobretudo a partir da década de 1980. O objetivo deste artigo é contribuir para o avanço da temática, mapeando a incidência e a distribuição espacial da ilegitimidade no estado de São Paulo, no final do século XIX, a partir de uma perspectiva diferente daquela dos estudos já elaborados, especialmente em relação ao recorte temporal e às fontes utilizadas. Assim, foram analisados os dados sobre a filiação na população paulista a partir dos Recenseamentos Gerais da População Brasileira, realizados em 1890 e 1900, acrescidos de outras fontes de cunho estatístico, produzidas para o estado de São Paulo. Os resultados apontam um quadro diferenciado em relação às várias zonas que compõem o estado e, embora as fontes sejam distintas, corroboraram o papel fundamental da imigração internacional, pois, nas áreas onde ela foi mais intensa, verificou-se a queda nos percentuais da ilegitimidade.

Abstract In Brazil, the study of the condition of legitimacy (affiliation) is a topic that has been studied by the specialized literature, both in the field of History and in that of Historical Demography, especially from the 1980s onwards. The objective of this article is to contribute to the advancement of the debate on illegitimacy, mapping the incidence and the spatial distribution of the phenomenon in the state of São Paulo, at the end of the 19th century, from a different perspective of previous studies, especially in relation to the considered period and the used sources. Thus, data on affiliation in the São Paulo population were analysed from the General Censuses of the Brazilian Population, carried out in 1890 and 1900, in addition to other statistical sources produced for the state of São Paulo. The results point to a different picture in relation to the various zones that make up the state of São Paulo and, although the sources are different, the results corroborate the fundamental role of international immigration, because in the areas where it was more intense, there was a decrease in the percentages of illegitimacy.

Resumen En Brasil, el estudio de la condición de legitimidad (filiación) es un tema que viene siendo abordado por la literatura especializada tanto en el campo de la Historia como en el de la Demografía Histórica, especialmente a partir de la década del ochenta del siglo XX. Es nuestra intención contribuir al avance del tema, mapeando la incidencia y la distribución espacial de la ilegitimidad en el estado de São Paulo, a finales del siglo XIX, desde una perspectiva diferente a la de estudios anteriores, en especial en relación con el marco temporal y las fuentes utilizadas. Así, los datos de afiliación en la población paulista fueron analizados a partir de los censos generales de población brasileña de 1890 y de 1900, además de otras fuentes estadísticas producidas para el estado de São Paulo. Los resultados apuntan a un cuadro diferente en relación con las diversas zonas que componen el estado de São Paulo y, aunque las fuentes son diferentes, los resultados corroboran el papel fundamental de la inmigración internacional, pues en las áreas donde fue más intensa disminuyeron los porcentajes de ilegitimidad.

Spatial distribution of cognitive dysfunction and its risk factors in Chinese population aged 45 years and above / 南方医科大学学报

OBJECTIVE@#To analyze the spatial distribution of the prevalence of cognitive dysfunction and its risk factors in Chinese population aged 45 years and above to provide evidence for formulating regional prevention and control strategies.@*METHODS@#The study subjects with complete cognitive function data were selected from the follow-up data of the China Health and Retirement Longitudinal Study (CHARLS) Phase IV. ArcGis 10.4 software was used for spatial analysis of the prevalence of cognitive dysfunction in the population aged 45 years and above for each province based on the geographic information system (GIS) technology.@*RESULTS@#In 2018, the overall prevalence of cognitive dysfunction was 33.59% (5951/17716) in individuals aged 45 and above in China. Global spatial autocorrelation analysis indicated a spatial clustering and a positive autocorrelation (P < 0.001) of the prevalence of cognitive dysfunction in the study subjects, with a Moran's I value of 0.333085. The results of local spatial autocorrelation analysis showed that the southwestern region of China was the main aggregation area of patients with cognitive dysfunction. Geographically weighted regression analysis suggested that a male gender, an advanced age, and illiteracy were the major risk factors for cognitive dysfunction (P < 0.05). These 3 risk factors showed a spatial distribution heterogeneity with greater impact in the northern, western, and northwestern regions of China, respectively.@*CONCLUSION@#The prevalence of cognitive dysfunction is relatively high in individuals aged 45 years and above in China. A male gender, an advanced age, and illiteracy are the major risk factors for cognitive dysfunction and show different spatial distribution patterns, with the northern, western and northwestern regions of China as the key areas for prevention and control, where the prevention and control measures should be designed based on local conditions.

Spatial distribution and prediction analysis of the national AIDS epidemic in 2009 - 2020 / 公共卫生与预防医学

Objective Tto analyze the spatial distribution and characteristics of the national AIDS/HIV epidemics from 2009 to 2020 to discover its distribution, aggregation, and hot spots, and provide corresponding suggestions for AIDS prevention and control. Methods Spatial autocorrelation analysis, hot spot analysis, and Kriging interpolation prediction were used to describe, analyze, and predicting the spatial distribution of AIDS epidemics across the country. Results The national AIDS incidence and mortality rate increased yearly, but the growth rate shows a downward tendency with uneven spatial distribution,focusing on the southwest and northwest regions; the average annual incidence rate of AIDS ( Moran's I> 0, P 0, P “high-high” clusters of AIDS incidence; Sichuan, Yunnan, Guangxi,Hunan,Xinjiang and Guizhou were the areas with “high-high” clusters of average annual mortality. The “hot spot” areas were mainly concentrated in the southwestern part of China, and the “cold spot” areas were mainly concentrated in the eastern coastal and northern parts of China; Kriging interpolation predicted that Xinjiang would be the new hot spot area for future epidemics. Conclusion The spatial distribution of AIDS in China is uneven, showing spatial aggregation, hot spots and cold spots coexist, and the high-risk areas will continue to expand in the future.So the prevention and control work should be carried out in a targeted and localized manner.

Health risk and spatial distribution characteristics of heavy metal exposure in typical abandoned mining area in Liuzhou, Guangxi / 环境与职业医学

Background Exposure to heavy metals has potential adverse impacts on human health, and the concentration of heavy metals in abandoned mining areas may still be higher than that in general areas, so the health risk assessment in such areas cannot be ignored. Objective To explore the health risk of heavy metal exposure and the spatial distribution characteristics of associated main metals in a typical abandoned mining area. Methods Environmental samples of irrigated soil, rice, and drinking water were collected from 13 natural villages under the jurisdiction of a township in Liuzhou, Guangxi from November to December 2019, where a typical abandoned mining was located. Finally, 13 irrigation soil samples, 11 rice samples, and 13 drinking water samples were collected. The concentrations of six metals and metalloid elements in each environmental sample were detected by inductively coupled-plasma mass spectrometry (ICP-MS), including cadmium (Cd), arsenic (As), lead (Pb), chromium (Cr), copper (Cu), and zinc (Zn). At the same time, 251 local residents were recruited for health risk assessment. Model parameters such as body weight, rice intake, and drinking water intake of local residents were obtained through field survey, and the median metal concentration of each environmental sample was taken as the risk assessment parameter of the region. The health risk of heavy metal exposure of local residents was assessed by using oral health risk assessment model of U.S. Environmental Protection Agency. The spatial distribution characteristics of health risks associated with heavy metals were evaluated by empirical Bayes interpolation method using Geographic Information System (GIS) technology. Results The positive rates of Cd, As, Pb, Cr, Cu, and Zn in the irrigated soil samples were 100.00%. The positive rate of Pb was 63.64% in the rice samples, while the rates of other metals were 100.00%. The positive rates of Cd, As, Pb, Cr, Cu, and Zn in the drinking water samples were 53.85%, 76.92%, 92.31%, 15.38%, 84.62%, and 100.00%, respectively. The results of non-carcinogenic risk assessment of oral exposure to heavy metals suggested that the contribution of heavy metals causing non-carcinogenic risk from high to low was As (70.52%) > Cd (18.03%) > Zn (6.63%) > Cu (4.12%) > Pb (0.64%) > Cr (0.06%), and the corresponding estimated non-carcinogenic risk values were 3.54 × 100, 9.05 × 10−1, 3.33 × 10−1, 2.07 × 10−1, 3.23 × 10−2, and 5.42 × 10−4, respectively. The results of carcinogenic risk assessment of oral exposure to heavy metals suggested that the contribution of studied metals from high to low was Cd (87.00%) > As (10.24%) > Cr (2.60%) > Pb (0.16%), and the estimated carcinogenic risks were 4.35× 10−3, 5.12 × 10−4, 1.30 × 10−4, and 3.08 × 10−7, respectively. Rice was the leading media associated with non-carcinogenic risk and carcinogenic risk (99.4% and 99.8% respectively). The spatial distribution characteristics of GIS showed no obvious regularity in the distribution of As in irrigated soil, rice, and drinking water. In rice and irrigated soil, the content of Cd in the villages adjacent to the mining area was obviously higher than that in the other villages, while in drinking water, the content in the villages far away from the mining area was higher. Conclusion As and Cd are the main heavy metals that increase the health risk of local residents in a typical abandoned mining area, and the distribution characteristics of the two heavy metals in different environmental media are not completely consistent.

Tendência temporal e distribuição espacial da sífilis gestacional e congênita no Brasil, período de 2008-2018 / Temporal trend and spatial distribution of gestational and congenital syphilis in Brazil, period 2008-2018

Introdução: A sífilis tornou-se um problema de saúde pública em várias regiões no mundo. Objetivo: Analisar a tendência temporal e distribuição espacial da sífilis gestacional e congênita no Brasil, no período de 2008 a 2018. Método: Trata-se de um estudo de diferentes métodos. 1) Estudo de série temporal da taxa de detecção da sífilis gestacional e correlação entre variáveis socioeconômicas e de serviços de saúde. Os dados foram extraídos de bancos de dados nacionais de acesso público. Utilizou-se o software Joinpoint Regression e o coeficiente de correlação de Pearson. 2) Estudo ecológico de análise espacial da taxa de detecção da sífilis gestacional e correlação espacial entre variáveis socioeconômicas e de serviços de saúde. Extraídos dados secundários, agregados em 482 Regiões Imediatas de Articulação Urbana. Utilizou-se o software GeoDa. 3) Estudo ecológico de tendência temporal e distribuição espacial da taxa de incidência da sífilis congênita e correlação espacial entre variáveis socioeconômicas e de serviços de saúde. Extraídos dados secundários. 4) Protocolo para uma revisão de escopo com o objetivo de identificar e mapear o uso da Análise Espacial como ferramenta em pesquisas sobre sífilis na área da saúde. Baseou-se no manual do Joanna Briggs Institute e no guia PRISMA-ScR. Resultados: A região Sul apresentou a maior tendência; enquanto a Centro-Oeste, menor. Detectada correlação com o Índice de Desenvolvimento Humano Municipal, taxa de analfabetismo, percentual de cobertura da atenção primária à saúde e proporção de médicos, enfermeiros e unidades básicas de saúde por habitante. A taxa de detecção de sífilis gestacional distribuiu-se desigualmente e mostrou correlação espacial com o Índice de Desenvolvimento Humano Municipal, percentual de cobertura da atenção básica e proporção de médicos por habitantes. A taxa de incidência de sífilis congênita mostrou tendência ascendente e distribuíção desigual. Apresentou correlação espacial com o percentual de indivíduos com abastecimento de água e saneamento inadequados e percentual de nascidos vivos com 1 a 3 consultas de pré-natal. O protocolo para a revisão de escopo explicitou a questão de pesquisa, as bases de dados para buscas, critérios de inclusão e exclusão, planilha de extração de dados e o tipo de análise dos dados. Considerações finais: Investimentos em políticas de saúde e sociais são necessárias para mitigar as vulnerabilidades sociais e fortalecer a atenção primária à saúde para o controle da sífilis (AU).

Introduction: Syphilis has become a public health problem in several regions of the world. Objective: To analyze the temporal trend and spatial distribution of gestational and congenital syphilis in Brazil, from 2008 to 2018. Method: It is a study of different methods. 1) Time series study of the detection rate of gestational syphilis and correlation between socioeconomic and health service variables. Data were extracted from publicly accessible national databases. The Joinpoint Regression software and Pearson's correlation coefficient were used. 2) Ecological study of spatial analysis of the detection rate of gestational syphilis and spatial correlation between socioeconomic variables and health services. Extracted secondary data, aggregated in 482 Immediate Urban Articulation Regions. GeoDa software was used. 3) Ecological study of temporal trends and spatial distribution of the incidence rate of congenital syphilis and spatial correlation between socioeconomic variables and health services. Secondary data extracted. 4) Protocol for a scoping review with the objective of proposing a protocol to identify and map the use of Spatial Analysis as a tool in research on syphilis in the health area. It was based on the Joanna Briggs Institute manual and guided by PRISMA-ScR. Results: The South region showed the greatest trend; while the Midwest, smaller. Correlation detected with the Municipal Human Development Index, illiteracy rate, percentage of primary health care coverage and proportion of doctors, nurses and basic health units per inhabitant. The detection rate of gestational syphilis was unevenly distributed and showed a spatial correlation with the Municipal Human Development Index, percentage of primary care coverage and proportion of physicians per population. The incidence rate of congenital syphilis showed an upward trend and uneven distribution. It showed a spatial correlation with the percentage of individuals with inadequate water supply and sanitation and the percentage of live births with 1 to 3 prenatal consultations. The protocol for the scope review explained the research question, the databases for searches, inclusion and exclusion criteria, data extraction worksheet and the type of data analysis. Final considerations: Investments in health and social policies are necessary to mitigate social vulnerabilities and strengthen primary health care for syphilis control (AU).

Spatial Epidemiology of COPD in Delhi, India

Introduction?Chronic obstructive pulmonary disease (COPD) and bronchial asthma are the most common chronic respiratory illnesses. COPD is one of the three most common causes of death worldwide. The main burden of mortality from COPD is seen in Latin America, sub-Saharan Africa, India, China, and South-East Asia. Absence of true prevalence values and mortality burden hinder planning and operationalization of public health interventions for prevention, control, and treatment of the disease. Further, the aggregated value of prevalence estimates calculated for a whole city or a larger geographical area does not provide the location of patients and presence of locally prevalent risk factors. The objective of this study was to understand the spatial distribution of COPD in a large, highly polluted city of a developing country. Materials and Methods?A cross-sectional community-based study was conducted in the National Capital Territory of Delhi (NCTD). All surveyed households were geocoded. GOLD screening criteria and pulmonary function tests using portable digital spirometer were used for diagnosis of COPD. Results?Results are presented as a series of maps depicting spatial epidemiology. Overall prevalence rate was 9.8/1,000 population. Highest prevalence was seen in industrial area. Most of the spatial hotspots were seen in industrial and slum areas. Similarly, Kernel density was also highest in industrial area. Conclusion?In the city of NCTD, we found the COPD being distributed in all types of habitations but spatial distribution helped us understand clustering of cases and compare prevalence rates in subunits of residential clusters within a metropolitan city.

Availability of public outlets and regular consumption of fruits and vegetables among adolescents in public schools / Disponibilidade de equipamentos públicos de comércio no entorno de escolas públicas e consumo regular de frutas e hortaliças em adolescentes

ABSTRACT Objective: To assess the association between the presence of public outlets selling fruits and vegetables and the regular intake of these foods by adolescents from public schools in the city of Curitiba, Paraná, Brazil. Methods: Data collection was carried out by a questionnaire answered by the adolescents. Regular intake was defined as eating fruits and vegetables five or more times a week. Environmental data were obtained by assessing the availability and prices of fruits and vegetables traded in public outlets within a 1.6-km radius from 30 randomly selected public schools. Results: A total of 1,232 students from 30 public schools participated in the study. 43.4% of the adolescents reported a regular intake of fruits; 67.0% of them reported a regular intake of vegetables. In the schools, fruit intake ranged from 26.8 to 68.0%, and the vegetables intake ranged from 54.8 to 82.2%. A total of 22 schools had fruit and vegetables being traded in their surroundings. Regular intake of vegetables was positively correlated with their variety (r=0.82; p=0.007). The Moran's local index indicated low fruit intake in a high-supply region; in other three regions with low supply, there was a high intake of fruits; and there was a high consumption of vegetables in a high-supply region. Conclusions: There are differences in the supply of fruits and vegetables of public outlets in the school's surroundings as well as in the distribution of regular intake among regions. The density of public outlets and the variety were both associated with greater intake of fruits and vegetables among adolescents of public school.

RESUMO Objetivo: Avaliar a associação entre presença de equipamentos públicos de comércio de frutas e hortaliças com seu consumo regular por adolescentes de escolas públicas de Curitiba, Paraná. Métodos: Informações dos adolescentes foram coletadas por meio de questionário. Considerou-se como regular o consumo de frutas e hortaliças cinco ou mais vezes na semana. Foram incluídos dados do ambiente obtidos por auditagem de equipamentos públicos de venda de frutas e hortaliças no raio de 1,6 km do entorno de 30 escolas estaduais aleatoriamente sorteadas, no qual foram avaliados a disponibilidade e os preços desses alimentos. Resultados: Participaram do estudo 1.232 alunos de 30 escolas estaduais. O consumo regular de frutas foi referido por 43,4% e de hortaliças por 67,0% dos adolescentes. Nas escolas, o consumo de frutas variou entre 26,8 e 68,0% e o de hortaliças entre 54,8 e 82,2%; 22 escolas contavam com oferta de frutas e hortaliças no entorno. O consumo regular de hortaliças esteve correlacionado positivamente com a sua variedade (r=0,82; p=0,007). O índice de Moran local indicou baixo consumo de frutas em uma regional de alta oferta e, em outras três, alto consumo de frutas e hortaliças para baixa oferta e alto consumo de hortaliças em uma regional de alta oferta. Conclusões: Existem diferenças na oferta de frutas e hortaliças dos equipamentos públicos no entorno escolar e na distribuição do consumo regular entre as regionais. Características relacionadas à densidade de equipamentos de comércio e à variedade estiveram associadas ao maior consumo de frutas e hortaliças entre os adolescentes de escolas públicas.

Visualizing the spatial distribution and alteration of metabolites in continuously cropped Salvia miltiorrhiza Bge using MALDI-MSI / 药物分析学报

Salvia miltiorrhiza Bge(SMB)has long been used in traditional Chinese medicine to treat cardiovascular and cerebrovascular diseases.Growing clinical usage has led to a huge demand for artificial planting of SMB.Thus,continuous cropping of SMB is an important challenge that needs to be addressed.Contin-uous cropping can alter the metabolic profile of plants,resulting in poor growth and low yield.In this study,we tried to image the spatial location and variation of endogenous metabolites in continuously cropped SMB using matrix-assisted laser desorption/ionization mass spectrometry imaging(MALDI-MSI).Spatially resolved expressions of tanshinones,salvianolic acids,polyamines,phenolic acids,amino acids,and oligosaccharides in normal and continuously cropped SMB roots were compared.The ex-pressions of dihydrotanshinone Ⅰ,tanshinone Ⅱ A,dehydromiltirone,miltirone,dehydrotanshinone ⅡA,spermine,salvianolic acid B/E,tetrasaccharide,and pentasaccharide in continuously cropped SMB roots were much lower than those in normal roots.There was little difference in the expressions of caffeic acid and salvianolic acid A in normal and continuously cropped SMB roots.Ferulic acid was more widely distributed in xylem of normal SMB but strongly expressed in xylem,phloem,and cambium of continuously cropped SMB.The spatially resolved metabolite information enhances our understanding of the metabolic signature of continuously cropped SMB and also provides insights into the metabolic ef-fects of continuous cropping in other plants.

Spatial distribution analysis of blood donors′ intended donation addresses based on ArcGIS / 中国输血杂志

【Objective】 To apply the spatial distribution analysis based on ArcGIS software, which has been applied widely in other fields, so as to analyze the intended locations for whole blood donation. 【Methods】 After a random stratified sampling was conducted among blood donors in the 17 donation sites during August 1st, 2021- July 30th, 2022, their intended blood donation locations were collected by an e-questionnaire. Addresses of donors′ intended donation locations were derived for GCJ-02 coordinates form and transformed by pandas module of Python to WGS84 coordinates, which further loaded to ArcGIS Arcmap module using Grouping Analysis for 17 median centers. The addresses of 17 blood donation sites in Guangzhou Blood Center were transformed to WGS84 coordinates and loaded to ArcGIS Arcmap module using the same methods for 3 ring buffer analysis. The criterion for judging whether the two were " matched" was whether the intended blood donation sites were covered by or adjacent to the 3 ring buffer zone of the existing blood donation sites. 【Results】 Of the 17 potential sites obtained from the spatial distribution analysis of 40 523 valid addresses of donors, 8 sites were covered or adjacent to the buffer of the existing donation sites, while the other 9 sites were far away from the existing donation sites. 【Conclusion】 By analyzing the spatial distribution of donors′ intended donation addresses, we can find out the service needs of donors for donating blood conveniently, which can provide basis for further blood donation service optimization.

Spatial Distribution of Biomechanical Characteristics for Trabecular Bone in the Femoral Head with Osteonecrosis / 医用生物力学

Objective To explore the spatial distribution of microstructural parameters and mechanical properties for trabecular bone in the femoral head with osteonecrosis. Methods Microstructural parameters and mechanical properties of trabecular bone in different regions were analyzed by combined use of imaging measurements and numerical simulation method, and the spatial distribution of biomechanical properties for trabecular bone along coronal, sagittal and vertical directions was investigated. Results Microstructural characteristics and mechanical properties of trabecular bone were Y-shaped distributed along coronal and sagittal directions, and mechanical properties of trabecular bone in Y-shaped region were higher than those in the other regions. Such distribution characteristics was consistent with the location of principle compressive group in the femoral head. Conclusions Necrotic lesions in Y-shaped region had a greater influence on stress distribution of the femoral head and might cause the deterioration of osteonecrosis. The spacial correlation between necrotic lesions and Y-shaped region should be fully considered during clinical diagnosis.

Spatial distribution characteristics of severe fever with thrombocytopenia syndrome in Yantai City of Shandong Province from 2015 to 2020 / 中华地方病学杂志

Objective:To analyze the spatial distribution characteristics and spatial aggregation of the epidemic of severe fever with thrombocytopenia syndrome(SFTS) in Yantai City of Shandong Province, and to provide basis for formulating effective SFTS prevention and control measures.Methods:The epidemic data of SFTS confirmed cases in each township (street) in Yantai City, Shandong Province from 2015 to 2020 were collected from the "China Disease Prevention and Control Information System Infectious Disease Monitoring and Reporting System", and ArcGIS 10.2 software was used for spatial autocorrelation analysis.Results:From 2015 to 2020, a total of 839 SFTS cases were reported in Yantai City, including 124 deaths; with an average annual incidence rate of 2.14/100 000, and a total case fatality rate of 14.78%. Global spatial autocorrelation analysis showed that the distribution of SFTS cases in Yantai City from 2015 to 2020 showed a positive spatial correlation, with the highest spatial correlation in 2015 (Moran's I = 0.25, Z = 5.66, P < 0.001), and the lowest in 2018 (Moran's I = 0.16, Z = 3.69, P < 0.001). Local spatial autocorrelation and hotspot analysis showed that the epidemic areas of SFTS were mainly in some mountainous and hilly townships (streets) of Laizhou City, Penglai District, Qixia City, Zhaoyuan City, and Haiyang City. Conclusions:The distribution of SFTS epidemic in Yantai City has obvious regional clustering. Intervention measures such as publicity, education and monitoring should be strengthened in high-incidence areas to reduce the incidence of the disease.

Spatial Distribution Pattern of Medicinal Plant Resources in Gansu Province and Driving Factors / 中国实验方剂学杂志

ObjectiveTo clarify the spatial distribution characteristics of medicinal plant resources in Gansu province， analyze the causes， changing trends， and driving factors of the spatial differentiation， and thus lay a scientific basis for the rational development and sustainable development of medicinal plant resources in this province. MethodBased on the data of The Fourth National Survey of Chinese Medicine Resources， the richness and spatial distribution difference of medicinal plant resources in 87 counties （districts） of Gansu province were analyzed via the global spatial autocorrelation analysis， trend surface analysis， local spatial autocorrelation analysis， and hotspot analysis. Moreover， the correlation of vegetation type， soil texture， annual average temperature， annual average precipitation， and altitude with the spatial distribution pattern of the medicinal plant resources was discussed. ResultCounties （districts） with high or low richness of medicinal plant resources in Gansu province were respectively clustered together. To be specific， counties （districts） with high richness of the medicinal resources were mainly in southeastern Gansu， while those with low richness in northwestern Gansu. The leading driving factors affecting the cold and hot spots included vegetation type， soil texture， and average annual rainfall. ConclusionThe species richness of medicinal plant resources in Gansu province rises from west to east and from north to south. The natural driving factors are the key to the diversity and spatial distribution pattern of medicinal plant resources， which show significant influence on them.

Study on the spatial distribution and related factors of medical insurance designated retail pharmacies in Guiyang / 中国药房

OBJECTIVE To pr ovide theoretic support for Guiyang to scientifically guide the development of drug retail industry and implement national health policies . METHODS The data were collected through statistical yearbook ，data cloud ， coordinate acquisition device of Application Programming Interface of Baidu map and so on. The spatial distribution characteristics and accessibility of medical insurance designated retail pharmacies （shorted for “designated pharmacies ”）in Guiyang were analyzed by spatial analysis based on Geographic Information System. The related factors for the distribution of designated pharmacies in Guiyang were analyzed by statistical method. RESULTS The number of designated pharmacies ，designated pharmacies per thousand people and designated pharmacies per 10 km2 in Guiyang increased from 2 018，0.41 and 2.51 in 2020 to 2 500，0.42 and 3.11 in 2021，with growth rates of 23.89％，2.44％ and 23.90％ respectively. The service area of the designated pharmacies that residents of Guiyang reached within 15 minutes on foot was 10.27％ of the total service area of designated pharmacies in Guiyang. The results of correlation analysis showed that the correlation coefficients between the regional gross regional production ，total retail sales of consumer goods ，population，urban per capita disposable income and the number of designated pharmacies in Guiyang were 0.999，0.999，0.977 and 0.992，respectively （all P＜0.05）. CONCLUSIONS The distribution of designated pharmacies is insufficient in Guiyang ，the development of designated pharmacies in various administrative regions is uneven ，and the layout of pharmacies is significantly affected by economic and demographic factors. It is suggested that the local government should explore the strategy of scientifically and reasonably expanding the coverage of designated pharmacies in urban and rural areas，promote the rational layout of pharmacies with appropriate economic and demographic policies ，and pay attention to improving the service capacity of designated pharmacies ，so as to improve the quality of life of the people and guide the healthy and high-quality development of drug retail industry.

Spatial distribution of the positivity of Schistosomiasis mansoni in Maranhao State, Northeastern Brazil, from 2007 to 2016

ABSTRACT Schistosomiasis is considered one of the Neglected Tropical Diseases (NTDs), which affects around 240 million people worldwide. In Brazil, Schistosomiasis mansoni has been registered in 19 states, predominantly in rural areas. This study aimed to analyze the spatial distribution of Schistosomiasis mansoni cases in the Maranhao State from 2007 to 2016, as well as the temporal trend over this period. The data were obtained from secondary sources: Schistosomiasis Control Program of Maranhao (PCE-MA) and Information System for Notifiable Diseases (SINAN). The State Health Regions (HRs) were considered analysis units. Maranhao had a positivity rate of 3.8 for the period. The Regions that presented the highest percentages of positivity in the state were Pinheiro (7.92), Ze Doca (3.30), and Viana (3.10). Municipalities such as Bacuri, Serrano do Maranhao, and Bequimao, located in the Pinheiro HR, showed positivity rates of 16.56, 13.31, and 11.01 respectively. The spatial analysis of schistosomiasis cases showed that Maranhao has two main centers for the spread of the disease, both located in the northern portion of the state, namely the Baixada Maranhense and the east coast. This study concluded that the positivity of Schistosomiasis mansoni in Maranhao was stable over the analyzed period. The state still maintains the Baixada Maranhense micro-region as an important area for the spread of the disease reaching socially vulnerable population groups.

Tendência temporal e distribuição espacial da dengue no brasil / Time trend and spatial distribution of dengue in brazil / Tendencia temporal y distribución espacial del dengue en brasil

RESUMO Objetivo: determinar a tendência e a distribuição espacial dos casos confirmados de dengue no Brasil, no período de 2009 a 2019. Método: trata-se de um estudo ecológico, longitudinal, de série histórica, dos casos de dengue disponíveis no Sistema de Informação de Agravos de Notificação. Os dados foram analisados por meio da tendência e da distribuição espacial. Resultados: o estudo denotou tendência estacionária do coeficiente de incidência (R= 0,091; p > 0,05). Dentre as regiões brasileiras, a região Centro-Oeste foi a que se destacou, apresentando 42,04% de incidência dos casos. Em relação aos Estados brasileiros o Acre foi o que obteve maior incidência, revelando 45,06%. E sobre a forma grave da dengue, destacou-se a região Sudeste com 38,35% dos casos. Conclusão: a partir das análises epidemiológicas, conclui-se que a dengue, no Brasil, continua como relevante problema de saúde pública, tendo em vista seu elevado número de casos.

ABSTRACT Objective: to determine the time trend and spatial distribution of the confirmed dengue cases in Brazil between 2009 and 2019. Method: this is an ecological and longitudinal study of a historical series of the dengue cases available in the Information System of Notifiable Health Problems. The data were analyzed by means of time trend and spatial distributions. Results: the study denoted a stationary trend of the incidence coefficient (R=0.091; p>0.05). The Midwest region stood out among the Brazilian regions, with 42.04% incidence. In relation to the Brazilian states, Acre was the one with the highest incidence: 45.06%. Finally, regarding the severe form of dengue, the Southeast region stood out with 38.35% of the cases. Conclusion: based on the epidemiological analyses, it was concluded that, in Brazil, dengue is still a relevant public health problem, given the high number of cases.

RESUMEN Objetivo: determinar la tendencia temporal y la distribución espacial de los casos confirmados de dengue en Brasil entre 2009 y 2019. Método: estudio ecológico y longitudinal de serie histórica de los casos de dengue disponibles en el Sistema Información de Enfermedades Notificables. Los datos se analizaron por medio de tendencia temporal y distribución espacial. Resultados: el estudio denotó una tendencia estacionaria del coeficiente de incidencia (R=0,091; p>0,05). La región Centro-Oeste de Brasil se destacó con el 42,04% de incidencia de casos. En relación con los estados del país, Acre fue el que obtuvo mayor incidencia: 45,06%. Finalmente, en cuanto a la forma grave de dengue, la región Sudeste se destacó con el 38,35% de los casos. Conclusión: a partir de los análisis epidemiológicos se concluyó que, en Brasil, el dengue sigue siendo un problema de salud pública relevante, considerando la elevada cantidad de casos.

Distribuição espacial e incidência de casos de HIV/aids em Santa Cruz do Sul, Rio Grande do Sul, 2001 a 2020 / Distribución espacial e incidencia de casos de VIH/SIDA en Santa Cruz do Sul, Rio Grande do Sul, 2001 a 2020 / Spatial distribution and incidence of HIV/AIDS cases in Santa Cruz do Sul, state of Rio Grande do Sul, 2001 to 2020

Objetivo: descrever a distribuição espacial, a situação do tratamento e as características dos casos de pessoas infectadas pelo vírus da imunodeficiência humana (HIV), em Santa Cruz do Sul/RS, de 2001 a 2020. Métodos: estudo descritivo com dados de indivíduos em tratamento para HIV/aids, em Santa Cruz do Sul, diagnosticados no período de janeiro de 2001 a outubro de 2020. Resultados: foram analisados 708 (94,4%) casos, dos quais 58,2% eram do sexo masculino, com idade média de 39 anos. A taxa de incidência máxima foi registrada em 2019 (59,4/100 mil habitantes), e observou-se frequência elevada de casos nas regiões sul e central do município; 92,9% dos indivíduos continuavam em tratamento ativo, e a taxa de abandono alcançou 7,1% no período. Conclusão: observou-se uma maior incidência de HIV entre adultos do sexo masculino, das regiões central e sul da cidade, com uma taxa de tratamento próxima às metas da Organização Mundial da Saúde (OMS) e baixa taxa de abandono.

Objetivo: describir la distribución espacial, estado del tratamiento y características de los casos de personas infectadas por el virus de la inmunodeficiencia humana (VIH), en Santa Cruz do Sul, RS, de 2001 hasta 2020. Métodos: estudio descriptivo con datos de individuos en tratamiento por VIH/SIDA, en Santa Cruz do Sul, diagnosticados de enero de 2001 a octubre de 2020. Resultados: se analizaron 708 (94,4%) casos, de estos (58,2%) eran del sexo masculino, con una edad promedio de 39 años, la tasa de incidencia máxima fue en 2019 (59,4/100.000 habitantes), hubo una alta frecuencia de casos en la región sur y central del municipio, el 92,9% de estos individuos seguían en tratamiento activo y la deserción fue del 7,1% en el período. Conclusión: se observó una mayor incidencia de VIH en personas del sexo masculino adultas, de las regiones central y sur de la ciudad, con una tasa de tratamiento cercana a las metas de la Organización Mundial de la Salud y una baja tasa de deserción.

Objective: to describe the spatial distribution, treatment status and characteristics of cases of people infected with the human immunodeficiency virus HIV in Santa Cruz do Sul, RS, 2001 to 2020. Methods: descriptive study with data from individuals undergoing treatment for HIV/AIDS, in Santa Cruz do Sul, diagnosed from January 2001 to October 2020. Results: 708 (94.4%) cases were analyzed, of these (58.2%) were male, with a mean age of 39 years, the maximum incidence rate was in 2019 (59.4/100,000 inhabitants), there was a high frequency of cases in the south and central region of the city, 92.9% of these individuals were still in active treatment and the dropout rate was 7.1% in the period. Conclusion: a higher incidence of HIV was observed in adult male, from the central and southern regions of the city, with a treatment rate close to the goals of the World Health Organization and a low dropout rate.

Adolescents attending public schools: drug use, social determinants of health and spatial distribution / Adolescentes de escuelas públicas: consumo de drogas, determinantes sociales de la salud y distribución espacial / Adolescentes de escolas públicas: uso de drogas, determinantes sociais de saúde e distribuição espacial

ABSTRACT Objective: to evaluate drug use among adolescents attending public schools and its association with the social determinants of health and spatial distribution. Methods: a cross-sectional study carried out between 2020 and 2021 in which the Drug Use Screening Inventory (DUSI) and sociodemographic questionnaires were applied to 226 students attending 9th year of Fundamental Education in public schools from a city of Minas Gerais. A descriptive analysis was performed by means of Fisher's Exact Test. Results: regarding alcohol consumption, only the "age" variable was significant. As for tobacco, the "age", "parents' marital status" and "who do you live with?" variables presented a significant association. The other psychoactive substances did not present significant associations. In relation to the spatial distribution, the highest intensity of problems was concentrated in leisure/recreational activities. Conclusion: alcohol and tobacco use is associated with the social determinants referring to the social network and personal factors, such as age.

RESUMEN Objetivo: evaluar el consumo de drogas entre adolescentes de escuelas públicas y su asociación con los determinantes sociales de la salud y la distribución espacial. Métodos: estudio transversal realizado entre 2020 y 2021 en el que se aplicó el cuestionario Drug Use Screening Inventory (DUSI) y otro sociodemográfico a 226 estudiantes del 9º año de Educación Fundamental en escuelas públicas de una ciudad de Minas Gerais. Se realizó un análisis descriptivo y por medio de la Prueba Exacta de Fisher. Resultados: en relación con el consumo de alcohol, solamente la variable "edad" se mostró significativa. En cuanto al tabaco, se registró una asociación significativa entre el uso de tabaco y las variables "edad", "estado civil de los padres" y "con quién vive". Las demás sustancias psicoactivas no presentaron ninguna asociación significativa. En lo que se refiere a la distribución espacial, la mayor intensidad de problemas se concentró en actividades de ocio/recreación. Conclusión: el consumo de alcohol y tabaco está asociado a los determinantes sociales referentes a la red social y a factores personales, como la edad.

RESUMO Objetivo: avaliar o uso de drogas por adolescentes de escolas públicas e sua associação com os determinantes sociais de saúde e distribuição espacial. Métodos: estudo transversal realizado entre 2020 e 2021 em que se aplicaram os questionários Drug Use Screening Inventory (DUSI) e sociodemográfico em 226 estudantes do 9º ano do ensino fundamental de escolas públicas de uma cidade mineira. Realizou-se análise descritiva e por meio do Teste Exato de Fisher. Resultados: sobre o consumo de álcool, apenas a variável idade foi significativa. Quanto ao tabaco tiveram associação significativa o uso de tabaco e as variáveis idade, estado civil dos pais e com quem mora. As demais substâncias psicoativas não tiveram associação significativa. No que se refere à distribuição espacial, a maior intensidade de problemas se concentrou em atividades de lazer/recreação. Conclusão: o uso de álcool e tabaco estão associados aos determinantes sociais referentes a rede social e fatores pessoais, como idade.