Progress in the epidemiology of COVID-19 infections in children and adolescents / 中国学校卫生

Abstract@#The COVID-19 pandemic has posed a series of complex challenges. COVID-19 in children and adolescents is generally less severe than in adults and the elderly; however, some children and adolescents may experience severe complications and adverse health effects even after mild or asymptomatic COVID-19 infections. The article focuses on gathering the epidemic characteristics, health impact, risk factors, prevention and control measures, and vaccination status of children and adolescents with COVID-19 infection to provide recommendations for protecting children and adolescents in the post COVID-19 era.

Analysis of the clinical and epidemiologic characteristics of 644 children with dental trauma / 中国学校卫生

Objective@#The clinical data involving pediatric dental trauma and the features of dental trauma in children were summarized to provide a reference for the treatment and prevention of dental trauma.@*Methods@#A retrospective analysis was performed on 644 children with dental trauma who were admitted to the Department of Children s Stomatology, Stomatology Hospital of Xiamen Medical College from January to December 2022. Descriptive methods were used to analyze the general demographic characteristics of the children and clinical features of dental trauma.@*Results@#The characteristics of the children with dental trauma were as follows: male-to-female ratio, 2.16∶1; mean age, (6.73±3.42) years; most frequently affected age groups, 2-4 and 7-9 years (26.09%, 33.85%); most frequent season for dental trauma, spring (27.61%) and autumn (28.55%); least common season for dental trauma, summer(18.88%); most frequent time of day for dental trauma, evening (51.47%); least common time of day for dental trauma, morning (2.68%); >24 h elapsed from dental trauma-to-treatment (42.08%); most common type of injuries; simple tooth hard tissue and pulp injury in permanent teeth(65.25%) and simple periodontal tissue injury of primary teeth( 53.35 %); most likely teeth involved, maxillary central incisors (80.10%); and number of affected teeth, 1-2.@*Conclusions@#The incidence of dental trauma in children has common features, but most children do not see a dentist timely after dental trauma occurs. Educating parents of children with dental trauma should be encouraged to reduce the incidence of dental injury.

Epidemiology of suicide mortality in Mexican young people (ages 15-29) from 1990 to 2020 / Epidemiología del suicidio en jóvenes mexicanos (15-29 años) de 1990 a 2020

Abstract Introduction In 2020, suicide was the third leading cause of death in Mexico among young people ages 15 and 29, accounting for 43.0% of all suicides in the country, making it a major public health issue. Objective To explore changes in the geographic distribution of suicide rates by state and to analyze the magnitude, distribution, and pattern of suicide mortality in young Mexicans ages 15 to 29 between 1990 and 2020. Method Descriptive, ecological time-series study, based on official information. Standardized mortality rates were calculated using information on deaths (INEGI) and population estimates (CONAPO). The magnitude, distribution, and patterns of suicide mortality at the national level and by state were analyzed using the Joinpoint segmented regression model. Results From 1990 to 2020, suicide mortality in young people increased by 198% and was higher in women (285%) than men (178%). The states with the highest suicide mortality rates from 2016 to 2020 were Chihuahua (18.5 suicides/100,000 young people ages 15-29), Aguascalientes (16.6), Yucatán (14.4), Guanajuato (14.1), and San Luis Potosí (12.9), accounting for 23.0% of total suicide deaths. Discussion and conclusion The study of mortality trends could contribute to the management of a national suicide prevention strategy in young Mexicans, providing support for public health decision-making, such as the identification of the states and regions that should be prioritized.

Resumen Introducción En 2020, el suicidio fue la tercera causa de muerte en México en los jóvenes de 15 a 29 años y concentró el 43.0% del total de suicidios del país. Por lo tanto, es un problema de salud pública muy relevante. Objetivo Explorar los cambios en la distribución geográfica de las tasas de suicidio por entidad federativa, así como analizar la magnitud, distribución y tendencia de la mortalidad por suicidio, en los jóvenes mexicanos de 15 a 29 años entre 1990 y 2020. Método Estudio ecológico descriptivo de series de tiempo, a partir de la información de fuentes oficiales. Se calcularon las tasas estandarizadas de mortalidad utilizando la información sobre defunciones (INEGI) y las estimaciones de población (CONAPO). Se analizó la magnitud, distribución y tendencias de la mortalidad por suicidio a nivel nacional y por entidad federativa, utilizando el modelo de regresión segmentada Joinpoint. Resultados De 1990 a 2020, la mortalidad por suicidio en jóvenes creció 198%, siendo mayor en las mujeres (285%) que en los hombres (178%). Las entidades con mayor mortalidad por suicidio, de 2016 a 2020, fueron Chihuahua (18.5 suicidios/100 mil jóvenes 15-29 años), Aguascalientes (16.6), Yucatán (14.4), Guanajuato (14.1) y San Luis Potosí (12.9), las cuales concentraron el 23.0% del total de muertes por suicidios. Discusión y conclusión El estudio de las tendencias de la mortalidad podría contribuir a la gestión de una estrategia nacional para la prevención del suicidio en jóvenes mexicanos, proporcionando sustento para la toma de decisiones en salud pública, como la identificación de las entidades federativas y regiones del país que deben recibir la máxima prioridad.

Development of a convolutional neural network for diagnosing osteoarthritis, trained with knee radiographs from the ELSA-Brasil Musculoskeletal / Desenvolvimento de rede neural convolucional para o diagnóstico radiográfico de osteoartrite dos joelhos no ELSA-Brasil Musculoesquelético

Abstract Objective: To develop a convolutional neural network (CNN) model, trained with the Brazilian "Estudo Longitudinal de Saúde do Adulto Musculoesquelético" (ELSA-Brasil MSK, Longitudinal Study of Adult Health, Musculoskeletal) baseline radiographic examinations, for the automated classification of knee osteoarthritis. Materials and Methods: This was a cross-sectional study carried out with 5,660 baseline posteroanterior knee radiographs from the ELSA-Brasil MSK database (5,660 baseline posteroanterior knee radiographs). The examinations were interpreted by a radiologist with specific training, and the calibration was as established previously. Results: The CNN presented an area under the receiver operating characteristic curve of 0.866 (95% CI: 0.842-0.882). The model can be optimized to achieve, not simultaneously, maximum values of 0.907 for accuracy, 0.938 for sensitivity, and 0.994 for specificity. Conclusion: The proposed CNN can be used as a screening tool, reducing the total number of examinations evaluated by the radiologists of the study, and as a double-reading tool, contributing to the reduction of possible interpretation errors.

Resumo Objetivo: Desenvolver um modelo computacional - rede neural convolucional (RNC) - treinado com radiografias da linha de base do Estudo Longitudinal de Saúde do Adulto Musculoesquelético (ELSA-Brasil Musculoesquelético), para a classificação automática de osteoartrite dos joelhos. Materiais e Métodos: Trata-se de um estudo transversal abrangendo todos os exames da linha de base do ELSA-Brasil Musculoesquelético (5.660 radiografias dos joelhos em incidência posteroanterior). Os exames foram interpretados por médico radiologista com treinamento específico e calibração previamente publicada. Resultados: A RNC desenvolvida apresentou área sob a curva característica de operação do receptor de 0,866 (IC 95%: 0,842-0,882). O modelo pode ser calibrado para alcançar, não simultaneamente, valores máximos de 0,907 para acurácia, 0,938 para sensibilidade e 0,994 para especificidade. Conclusão: A RNC desenvolvida pode ser utilizada como ferramenta de triagem, reduzindo o número total de exames avaliados pelos radiologistas do estudo, e/ou como ferramenta de segunda leitura, contribuindo com a redução de possíveis erros de interpretação.

Caracterização e geoespacialização da sífilis gestacional e congênita no Paraná, Brasil, 2012-2020 / Characterization and geospacialization of gestational and congenital syphilis in Paraná, Brazil, 2012-2020 / Caracterización y geoespacialización de sífilis gestacional y congénita en Paraná, Brasil, 2012-2020

A sífilis persiste como um problema de saúde pública, sobretudo pelos entraves existentes no enfrentamento da sífilis gestacional e congênita. Considerando que a ocorrência dessas infecções se relaciona a fatores maternos e programáticos, este estudo buscou analisar as características epidemiológicas do binômio mãe-filho exposto à sífilis e sua distribuição espacial no Paraná entre 2012 e 2020. Trata-se de estudo descritivo e ecológico, com dados dos sistemas nacionais de informação do Brasil. Foram considerados os casos de gestantes e de crianças registrados entre 2012 e 2020 no estado do Paraná. Foram apresentadas as frequências absolutas e relativas para a caracterização, calculando-se a variação percentual entre o primeiro e o último triênio. Ainda, foi empregado o índice de Moran para a geoespacialização segundo regiões de saúde. Houve predomínio em mulheres de 20 a 39 anos (71,24%), brancas (67,22%) e com até oito anos de estudo (80,76%), com diagnóstico nas fases primária e latente (76,42%). Os casos concentraram-se em crianças do sexo masculino (48,72%), diagnosticadas na fase recente (96,42%), e naquelas cujas mães aderiram ao pré-natal (88,88%), mas os parceiros, por sua vez, não foram tratados (69,46%). Houve aumento do diagnóstico materno durante o pré-natal (16,61%) e redução dos óbitos infantis por sífilis (31,25%). Observou-se concentração das notificações nas regiões Metropolitana e de Pato Branco. Em suma, as gestantes apresentaram idade reprodutiva e baixa escolaridade e foram tratadas durante o pré-natal, contudo, sem a inclusão dos parceiros. Ademais, evidenciou-se comportamento espacial aleatório nas regiões de saúde, com disparidade entre a sífilis gestacional e a congênita.

Syphilis remains as serious public health issue due to existing obstacles in combating gestational and congenital syphilis. Since the onset of these infections is related to maternal and programmatic factors, this study analyzed the epidemiological profile of the mother-child binomial exposed to syphilis and its spatial distribution in Paraná from 2012 to 2020. This is a descriptive, ecological study with data from Brazilian national information systems. Cases of pregnant women and children recorded between 2012 and 2020 in the state of Paraná were considered. Absolute and relative frequencies were estimated for characterization, calculating the percentage variation between the first and last three years. The Moran index was also used for geospacialization according to health regions. Most women were aged 20 to 39 years (71.24%), white (67.22%), and had up to 8 years of schooling (80.76%), with diagnosis in the primary and latent stages (76.42%). Most cases concerned male children (48.72%), diagnosed in the recent phase (96.42%), and from mothers who adhered to prenatal care (88.88%), but the partners were untreated (69.46%). Maternal diagnosis increased during prenatal care (16.61%) and infant deaths by syphilis decreased (31.25%). Most cases were notified in the Metropolitan and Pato Branco regions. In short, the pregnant women were of reproductive age, had low education, and were treated during prenatal care, but their partners were not included. The health regions showed random spatial behavior, with disparity between gestational and congenital syphilis.

La sífilis persiste como un problema de salud pública, principalmente por los obstáculos en hacer frente la sífilis gestacional y congénita. Teniendo en cuenta que la ocurrencia de estas infecciones está relacionada con los factores maternos y programáticos, este estudio tuvo como objetivo analizar las características epidemiológicas del binomio madre-hijo expuestos a la sífilis y la distribución espacial en Paraná (Brasil) entre 2012 y 2020. Se trata de un estudio descriptivo y ecológico, con datos de los sistemas de información nacionales de Brasil. Se consideraron los casos de mujeres embarazadas y niños registrados entre 2012 y 2020 en Paraná. Se presentaron las frecuencias absolutas y relativas, calculando la variación porcentual entre el primer y el último trienio. Asimismo, se utilizó el índice de Moran, según regiones de salud. Predominaron las mujeres de entre 20 y 39 años de edad (71,24%), blancas (67,22%), con hasta ocho años de estudio (80,76%), con diagnóstico en estadio primario y latente (76,42%). Los casos se concentraron en hijos varones (48,72%), diagnosticados en fase reciente (96,42%), y en aquellos cuyas madres tuvieron acceso a los cuidados prenatales (88,88%), pero su pareja no recibió el tratamiento (69,46%). Hubo un aumento en el diagnóstico materno durante la atención prenatal (16,61%) y una reducción en las muertes de niños por sífilis (31,25%). Se observó una concentración de casos en las regiones Metropolitana y de Pato Branco. En resumen, las mujeres embarazadas se encontraban en edad reproductiva, tenían bajo nivel de estudios y eran atendidas durante el prenatal, sin incluir su pareja. Además, se evidenció un comportamiento espacial aleatorio en las regiones de salud, con disparidad entre sífilis gestacional y congénita.

Características clínico-epidemiológicas de pacientes post-COVID-19 en Baracoa, Guantánamo

Fundamento un elevado porcentaje de personas que han padecido COVID-19, refieren tras la recuperación de la fase aguda, manifestaciones que se prolongan por más de tres semanas, e incluso, durante tres meses después del cuadro clínico original. Objetivo caracterizar desde el punto clínico y epidemiológico a pacientes confirmados al SARS-CoV-2 en la etapa post-COVID-19. Métodos se realizó un estudio descriptivo transversal, en pacientes confirmados al SARS-CoV-2 en etapa post-COVID-19, pertenecientes al Policlínico Hermanos Martínez Tamayo, en el periodo octubre-noviembre de 2021. Se estudiaron todos los pacientes (N=400) atendidos en consulta post-COVID-19 en el periodo declarado. La información se obtuvo mediante encuestas epidemiológicas realizadas. Resultados predominaron los pacientes con edades entre 50 y 59 años, del sexo femenino. Las manifestaciones clínicas más frecuente fueron tos, pérdida del gusto y del olfato. El esquema de vacunación incompleto fue el más frecuente. El lugar de ingreso más utilizado fueron los centros de aislamiento, así como el uso del Nasalferon como tratamiento. Las complicaciones predominaron en pacientes no vacunados, y con edad de 60 años y más. Conclusiones un elevado porcentaje de pacientes presentó manifestaciones clínicas tras el periodo agudo de la enfermedad. La COVID-19, a mediano plazo, tuvo mayores implicaciones en el sistema respiratorio, nervioso y osteomioarticular. Las campañas de vacunación ayudan a prevenir los síntomas graves del virus y a contrarrestar las complicaciones.

Background a high percentage of people who have suffered from COVID-19 report, after recovery from the acute phase, manifestations that last for more than three weeks, and even for three months after the original clinical picture. Objective to characterize, from the clinical and epidemiological point of view, patients confirmed to SARS-CoV-2 in the post-COVID-19 stage. Methods a descriptive cross-sectional study was carried out in patients confirmed to SARS-CoV-2 in the post-COVID-19 stage, belonging to the Hermanos Martínez Tamayo Polyclinic, from October to November 2021. All patients were studied (N= 400) attended in post-COVID-19 consultation in the declared period. The information was obtained through epidemiological surveys carried out. Results there was a predominance of patients aged between 50 and 59 years old, female. The most frequent clinical manifestations were cough, loss of taste and smell. The incomplete vaccination scheme was the most frequent. The most used place of admission were isolation centers, as well as the use of Nasalferon as a treatment. Complications predominated in unvaccinated patients, and aged 60 years and over. Conclusions a high percentage of patients presented clinical manifestations after the acute period of the disease. COVID-19, in the medium term, had greater implications in the respiratory, nervous and osteomyoarticular systems. Vaccination campaigns help prevent serious symptoms of the virus and counteract complications.

Práticas alimentares de professores da educação básica de um município do interior do Rio Grande do Sul: um estudo transversal / Feeding practices of basic education teachers in a city in the countryside of Rio Grande do Sul: a cross-sectional study

Introdução: no Brasil, é possível identificar mudanças nas práticas alimentares nas últimas décadas, alimentos tradicionais como arroz e feijão perderam a importância e foram substituídos por alimentos prontos para o consumo. Objetivo: diante disso, o objetivo do estudo foi avaliar as práticas alimentares de professores da rede municipal de educação de Passo Fundo, RS. Metodologia: foi realizado um estudo transversal com professores de ambos os sexos da rede municipal de educação. Os professores foram convidados a participar do estudo por meio de correio eletrônico da prefeitura municipal. A coleta de dados foi mediante formulário eletrônico com questões sobre condições sociodemográficas, saúde e práticas alimentares Resultados: foram avaliados 108 professores, a média de idade foi de 42,81 anos (DP=8,85) e 95,4% eram mulheres. Em relação às práticas alimentares, observou-se que 68,7% (n=71) apresentaram práticas alimentares satisfatórias, sendo que a média de pontuação foi de 45,46 (DP=8,33). Conclusão: apesar do elevado percentual de práticas alimentares excelentes, observa-se práticas alimentares inadequadas que podem contribuir para a ocorrência de excesso de peso ao longo do tempo.

Introduction: in Brazil, it is possible to identify changes in eating practices in recent decades, traditional foods such as rice and beans have lost importance and have been replaced by ready-to-eat foods. Objective: therefore, the objective of the study was to evaluate the eating habits of teachers from the public education system of Passo Fundo, RS. Methodology: a cross-sectional study was carried out with male and female teachers from the municipal public education system. Teachers were invited to participate in the study via e-mail from the municipal government. Data were collected using an electronic form with questions about sociodemographic conditions, health and eating practices. Results: 108 teachers were evaluated; the average age was 42.81 years (SD=8.85) and 95.4% were women. Regarding eating practices, it was observed that 68.7% (n=71) had satisfactory eating practices, with an average score of 45.46 (SD=8.33). Conclusion: despite the high percentage of excellent eating practices, it was be observed that inadequate eating practices can contribute to the occurrence of excess weight over time.

Trastornos de la infancia y características sociodemográficas asociadas a la depresión en adultos en una ciudad de Colombia / Childhood disorders and sociodemographic characteristics associated with depression in adults from a Colombian city / Transtornos da infância e características sócio-demográficas associadas à depressão em adultos de uma cidade colombiana

Introducción: Los trastornos emocionales y del comportamiento que se inician en la infancia llevan a cambios que se extienden hasta la edad adulta, con consecuencias sociales. Objetivo: Determinar la asociación de la depresión en la adultez con trastornos mentales de inicio en la infancia y otras condiciones, en Envigado, 2017. Materiales y métodos: Estudio con enfoque cuantitativo, tipo observacional, transversal con intención analítica. El tamaño de la muestra fue de 737 individuos, entre 18 y 65 años. Se aplicó el instrumento CIDI - CAPI de la OMS. El procesamiento y análisis se llevó a cabo en SPSS v. 21 de la Universidad CES y Epidat 4.2. Resultados: La proporción de depresión en la adultez es de 10,8%, en la población de estudio que tuvo antecedente de trastorno por déficit de atención e hiperactividad (TDAH) fue aproximadamente 5,6 veces más que en aquellos que no tenían este antecedente (OR= 6,62; IC95% 1,92-22,7). Conclusiones: El TDAH en la infancia incrementa la probabilidad de presentar depresión en la adultez en la población de Envigado, lo cual soporta la importancia de promover acciones de salud mental en la niñez, para prevenir la depresión en la edad adulta.

Introduction: Emotional and behavioral disorders that begin in childhood lead to adult changes, which have social consequences. Objective: To determine the association of adult depression with childhood onset of mental disorders and other factors in Envigado (Colombia). Materials and methods: A quantitative observational and cross-sectional study was carried out. The sample size was 737 individuals aged between 18 to 65 years. The CIDI-CAPI instrument of the WHO was used. Data processing and analysis was conducted through SPSS v. 21 software from the CES University and Epidat 4.2. Results: The percentage of depression in adults was 10.8%. This figure was 5.6 times greater in the study population that had history of attention deficit hyperactivity disorder (ADHD) compared to individuals who did not have this disorder (OR= 6.62; 95% CI 1.92-22.7). Conclusions: Childhood ADHD increases the probability of depression in the adult population of Envigado, which supports the importance of promoting mental health programs in children in order to prevent adulthood depression.

Introdução: Os transtornos emocionais e comportamentais que se iniciam na infância levam a alterações que se estendem até a idade adulta, com consequências sociais. Objetivo: Determinar a associação da depressão na idade adulta com transtornos mentais de início na infância e outras condições, em Envigado, 2017. Materiais e métodos: um estudo foi realizado com abordagem quantitativa, observacional, transversal e com intenção analítica. O tamanho da amostra foi de 737 indivíduos, entre 18 e 65 anos de idade. Foi aplicado o instrumento CIDI - CAPI da OMS. O processamento e análise foram realizados no SPSS v. 21 da Universidad CES e Epidat 4.2. Resultados: A proporção de depressão na idade adulta é de 10,8%, na população estudada que tinha histórico de transtorno de déficit de atenção e hiperatividade (TDAH) foi aproximadamente 5,6 vezes maior do que naquelas sem esse histórico (OR= 6,62; 95 % CI 1,92-22,7). Conclusões: O TDAH na infância aumenta a probabilidade de apresentar depressão na idade adulta na população de Envigado, o que reforça a importância de promover ações de saúde mental na infância, para prevenir a depressão na idade adulta.

Distribución geográfica de la incidencia de cáncer de beneficiarios de un convenio de atención oncológica en Chile

Cancer incidence reported by The Global Cancer Observatory (GLOBOCAN) is an estimate based on the registries available in each country. Their validity in regions such as Latin America is affected by the lack of reliable data and less access to healthcare among the population. Studying the geographic distribution of the incidence of malignant tumors facilitates the search for risk factors and allows prioritizing health resources. Aim: To estimate the incidence of the main malignant tumors in Chilean people with access to a private healthcare insurance at an oncological institute, and to know its geographical distribution. Material and Methods: Incident cancer cases during 2017 and 2018 were obtained from the institution's Tumor Registry. The incidence was adjusted by age and sex of the Chilean population obtained from the 2017 Census. Cancer rates were calculatedfor each of the 16 administrative regions in Chile. Results: Overall, the incidence of breast, lung, colon and thyroid cancers in the studied population was significantly higher than estimates for Chile reported by GLOBOCANfor 2020, especiallyfor thyroid cancer. There is a higher incidence of breast cancer in Greater Santiago and of lung cancer in men in the Antofagasta Region. Conclusions: The regional differences observed are explained by known risk factors. However the high incidence of lung and colon cancer in the Los Ríos Region requires further studies.

Epidemiological and etiological characteristics of hand-foot-mouth disease in Tongren City from 2018 to 2022 / 中国学校卫生

Objective@#To analyze the epidemiological and etiological characteristics of hand-foot-mouth disease (HFMD) in Tongren City during 2018 to 2022, so as to provide the reference for HFMD effective prevention and control.@*Methods@#Monitoring data on HFMD in Tongren City from 2018 to 2022 was collected from National Infectious Disease Reporting Information Management System. Descriptive epidemiological method was conducted on the data analysis.@*Results@#A total of 14 376 cases of HFMD were reported in Tongren City during 2018 to 2022, the average annual incidence rate of HFMD was 89.43/100 000. Totally 47 severe cases were reported, accounting for 0.33% of the total cases. The incidence rates of HFMD were generally declining trend during 2018 to 2022 (124.68/100 000, 95.37/100 000, 78.50/100 000, 61.63/100 000, 87.80/100 000) ( χ 2 trend =393.05, P <0.01), mainly occurred during April to July (48.13%), among children under 5 years old (95.72%). During 2018 to 2022, a total of 967 laboratory diagnosed cases reported in different years, regions, age groups showed significant differences in pathogen composition ratio ( χ 2=169.62, 456.65 , 167.96, P <0.05). From 2018 to 2022, the dominant pathogen of HFMD was constantly changing. Other enteroviruses were the dominant epidemic strains in 2018 and 2022 (33.04%, 37.62%), CoxA 6 was the dominant epidemic strain in 2019 to 2020 ( 68.75 %, 50.78%), and CoxA16 was the dominant epidemic strain in 2021(43.30%).In 2018, one case was infected with CoxA16 and EV71.The difference of pathogen composition ratio varied in different years ( χ 2=169.62, P <0.01).@*Conclusions@#The prevalence of HFMD in Tongren City has showed a declining trend during 2018 to 2022, and the dominant strain of HFMD has changed in recent years. The pathogen monitoring of HFMD should be strengthened to timely grasp the distribution and changes of pathogens, so as to provide a basis for the precise prevention and control of HFMD.

Spatial temporal feature of tuberculosis among high school students in Gansu Province from 2018 to 2022 / 中国学校卫生

Objective@#To analyze the spatial temporal distribution characteristics of tuberculosis among high school students at county levels in Gansu Province from 2018 to 2022,so as to provide a scientific basis for tuberculosis prevention and control in schools.@*Methods@#Tuberculosis data from high school students in counties (districts) reported in Gansu Province from 2018 to 2022 was collected from the Tuberculosis Information Management System and Infectious Disease Information Reporting System of the Chinese Disease Prevention and Control Information Management System. Demographic data of high school students in counties (districts) came from the General Management System of the Chinese Disease Prevention and Control Information Management System, and the spatial clustering of the reported incidence rate of pulmonary tuberculosis among high school students in Gansu Province in the past five years was analyzed using the methods of global spatial autocorrelation (Moran s I) and local indicators of spatial audocorrelation(LISA).@*Results@#A total of 41 885 pulmonary tuberculosis cases were reported in various counties of Gansu Province From 2018 to 2022, with an average reported incidence rate of 32.81/100 000. During the same period, 1 170 high school students cases were reported, with an average reported incidence rate of 13.72/100 000. With the exception of 2020, the reported incidence rate of pulmonary tuberculosis among high school students was non random distribution in other 4 years, showed a moderate intensity of spatial clustering. From 2018 to 2022, most counties in Gansu Province reported that the incidence rate of pulmonary tuberculosis among high school students was 10.00/100 000 or below, the counties with reported incidence rate >40.00/100 000 were mainly distributed in Luqu County, Maqu County, Diebu County, Hezuo City, Xiahe County of Gannan Prefecture, Gangu County and Wushan County of Tianshui Prefecture, Wenxian County and Kangxian County of Longnan Prefecture, Huachi County of Pingliang Prefecture, Huanxian County of Qingyang Prefecture. The number of counties where the reported incidence rate of tuberculosis among high school students more than 30.00/100 000 gradually decreased from 2018 to 2022. In the past five years, the reported incidence rate of tuberculosis among high school students in all counties of Gannan Prefecture remained above 40.00/ 100 000 . The LISA analysis results showed that the high incidence areas were mainly concentrated in Gannan Prefecture.@*Conclusions@#The epidemic situation of pulmonary tuberculosis among high school students in Gansu province from 2018 to 2022 is still a serious condition, showing the characteristics of unbalanced regional distribution. The reported incidence rate shows a strong spatial clustering, and the hot spots are concentrated in the counties (districts) of Gannan prefecture in Gansu Province.

Epidemiological characteristics of chronic diseases mortality among children aged 0-14 in China during 2012-2021 / 中国学校卫生

Objective@#To analyze the epidemiological characteristics and trends of chronic disease mortality among children aged 0-14 in China during 2012-2021, so as to provide scientific basis for the formulation of prevention strategies for chronic diseases in children.@*Methods@#The descriptive epidemiological analysis was conducted for chronic disease mortality among children aged 0-14 during 2012 to 2021 from China Cause of Death Surveillance Data Set, and the Joinpoint regression models were used to analyze the average annual percentage change (AAPC) of child chronic disease mortality.@*Results@#From 2012 to 2021, the mortality rates of chronic diseases among children aged 0-14 years in China (23.33/100 000, 19.54/100 000, 19.27/100 000, 17.69/ 100 000 , 16.87/100 000, 16.44/100 000, 14.49/100 000, 13.79/100 000, 11.61/100 000, 9.43/100 000)showed a decreasing trend (AAPC=-7.94%, P <0.01). The overall mortality rates for boys and girls and for chronic diseases were decreasing in both urban and rural areas (AAPC=-8.44%, -7.05%, -8.42%, -6.77%, P <0.05). The average annual mortality rate of chronic diseases was higher in boys (16.81/100 000) than in girls (13.96/100 000) ( χ 2=526.44, P <0.01). The average annual mortality rate from chronic diseases among children was higher in urban (15.98/100 000) than in rural areas (13.46/100 000) in the central region, and higher in rural (19.75/100 000) than in urban areas (15.96/100 000) in the western region ( χ 2=117.63, 190.25, P < 0.01 ). Except for malignant tumors, the trend of overall mortality rates of congenital abnormalities, neurological and mental disorders, cardiovascular diseases, and digestive system diseases were all decreasing (AAPC=-11.48%, -2.92%, -7.82%, -12.51 %, P <0.05).@*Conclusions@#The overall mortality rate of chronic diseases in children in China shows a downward trend during 2012-2021, but the situation of chronic disease prevention and control is still severe. Targeted prevention strategies should be adopted, focusing on the prevention and health care of males, children under 5 years old.

Epidemiological characteristics of injury deaths among children and adolescents in China, 2010-2020 / 中国学校卫生

Objective@#To explore the epidemic characteristics of injury related deaths in children and adolescents aged 1-24 years old in China from 2010 to 2020, so as to provide a basis for the formulation of policies and measures related to the control of injuries and deaths among children and adolescents.@*Methods@#The data were sourced from the China Death Cause Monitoring Dataset from 2010 to 2020. Annual percentage change (APC) and average annual percentage change (AAPC) of injury deaths in China in this age group during the period 2010 to 2020 were analyzed by Join point regression.@*Results@#From 2010 to 2020, the standardized death rate of injury showed a decreasing trend (AAPC=-6.90%, t =4.58, P <0.01). The standardized death rates of male and rural injuries showed an overall downward trend, with AAPC rates of -8.37% and -7.79%( t =11.87, 10.34, P <0.01). An increasing trend was observed in the 20-24 year-old age group during 2010-2018 (APC=18.11%, t =6.50, P <0.01). The death rate from injuries was higher in males than females, and higher in rural areas compared with urban areas ( χ 2=16 483.64, 3 268.65 , P <0.01). A downward trend was observed in accidental falls and suicide, the overall standardized mortality rate of traffic accidents, accidental poisoning, fire, drowning, homicide and other injuries (AAPC=-10.22%, -6.21%, -7.50%, -7.94%, -9.01% , -10.97%, t =16.23, 7.29, 2.53, 9.32, 7.88, 4.58, P <0.05). @*Conclusion@#From 2010 to 2020, the overall injury standardized mortality rate in the 1-24 year-old age group shows a decreasing trend, but it remains at a relatively high level. Prevention efforts should be continuously strengthened, especially for urban areas, and should focus on women and those aged 20-24 years old, as well as accidental falls and suicide prevention.

Epidemiological investigation of an outbreak of pertussis in a primary school in Rizhao / 中国学校卫生

Objective@#To investigate the epidemiological characteristics of a pertussis outbreak in a primary school in Rizhao City, so as to provide reference for the prevention and control strategy of pertussis.@*Methods@#The method of field epidemiological investigation was used to determine case definition for case search and case investigation,and the characteristics of the outbreak were comprehensively analyzed through descriptive epidemiological method.@*Results@#The outbreak lasted for 29 days from April 19 to May 17, 2022, with a total of 14 cases detected. All the cases were students aged 6-7 years from Class 2, Grade 1 in this primary school,including 6 boys and 8 girls. The attack rates of boys and girls were 30.00% and 34.78%, respectively. The time interval from onset to diagnosis of 14 cases ranged from 2 to 22 days, with a median of 10 days. All of them had received 4 doses of Diphtheria and Tetanus and acellular Pertussis(DTaP) combined vaccine, and the interval between the last vaccination and the onset of disease was 5-6 years. After isolated treatment, all the 14 sick students recovered, without severe or death cases.@*Conclusion@#The outbreak of pertussis in a primary school may be related to the decline in the effectiveness of pertussis vaccine protection over time, the lax implementation of a school registration and reporting system for sick absenteeism, and the poor sensitivity of existing pertussis surveillance systems.

Prevalence trend and related factors of scoliosis and myopia co-morbidities among primary and middle school students in Inner Mongolia Autonomous Region from 2019 to 2022 / 中国学校卫生

Objective@#To analyze the prevalence trend of scoliosis among myopic students in Inner Mongolia Autonomous Region during 2019-2022, to explore the common etiology of myopia and scoliosis co-morbidities, so as to provide a reference for the development of relevant measures.@*Methods@#The method of stratified random cluster sampling was used to select 181 533, 141 552 , 200 987, 190 918 primary and secondary school students from 12 leagues(103 banners) in Inner Mongolia Atuonomous Region in September each year from 2019 to 2022. And scoliosis screening, vision examination and questionnaire survey were conducted among students in the included studies. The χ 2 test was used to analyze the data, and the binary multivariate Logistic regression model was used to screen the influencing factors of scoliosis and myopia co-morbidities.@*Results@#From 2019 to 2022, the myopia rate of primary and secondary school students in Inner Mongolia Autonomous Region was 55.55%-59.72%, scoliosis rate was 1.56 %-2.81% and the rates of scoliosis and myopia co-morbidities were 1.14%-1.95%, and the difference between different years was statistically significant ( χ 2=595.01, 775.56, 461.84, P < 0.05 ). In 2022, the co-morbidity rate was higher in girls than in boys(1.32% vs 0.97%), the rate of urban areas was higher than that of rural areas(2.57% vs 0.62%), the rate of students in vocational high school and high school was higher than that in junior high school and primary school (3.82%,2.47% vs 1.70%,0.42%), the rate of over developed areas was higher than that of poor areas (1.21% vs 0.99%)( χ 2=52.19, 1 269.82, 1 361.52, 17.29, P < 0.05 ). Logistic regression analysis showed that at least 1 h of moderate and high intensity exercise every day on weekends, the number of physical education classes per week was more than 3 sessions, the height of desks and chairs was adjusted according to height, resting outdoors, limiting screen time, and strictly requiring standing and sitting posture were the negative correlated with scoliosis and myopia, and the OR value was 0.65-0.90, reading books or electronic screens while participating in cram classes, walking or riding in the car were positively correlated with comorbid scoliosis and myopia, and the OR values were 1.27 and 1.13 ( P < 0.05), respectively.@*Conclusion@#Behavioral habits severely affect scoliosis and myopic of students. Prevention and control of scoliosis and myopia co-morbidity should start with students behavioral habits, early screening and early intervention.

An outbreak of school influenza complicated with mycoplasma pneumoniae infection / 中国学校卫生

Objective@#To describe the clinical features, causal agent and transmission mode of a fever outbreak in a school in Shanghai.@*Methods@#Field epidemiological approaches including case definition development, searching for contacts, distribution of diseases description, environmental sampling and laboratory testing.@*Results@#A total of 16 influenza like cases were included, all concentrated in the one class of grade two, including 15 students and 1 teacher. Among student cases, the incidence rate was 36.59% (15/41), the average age was 7.4 years, the incidence rate was 36.84%(7/19) for boys, 36.36%(8/22) for girls. The clinical course was 5-15 days, with the median of 9 days, and 18.75%(3/16) of the cases stayed studying while sick. The nasopharyngeal swab specimens in 16 cases all tested positive for influenza B, of which 11 tested positive for mycoplasma pneumoniae and 1 case also tested positive for coronavirus OC43. Body temperature, number of mononuclear cells, and treatment time of patients infected with Influenza B and mycoplasma pneumoniae were higher than those of patients infected with influenza B alone( P <0.05). The outbreak lasted for 12 days, all sick students were treated and discharged from hospital, with no severe cases or death, and the outbreak was effectively controlled.@*Conclusion@#This campus cluster outbreak caused by influenza B and mycoplasma pneumoniae. Patients with influenza B with mycoplasma pneumoniae have severe symptoms and a long course of illness, suggesting the importance of early management of the epidemic.

Epidemiology of dental caries and its influences on jaw function in children / 中国学校卫生

Objective@#To understand and analyze the epidemiological characteristics of dental caries in children and its effects on jaw function, so as to prevent occurrence of abnormality of jaw function.@*Methods@#In October 2020, 860 cases of children from 5 kindergartens and 3 primary schools in Beijing were selected by adopting the convenience sampling method. All of them received oral examination, and the questionnaire according to the fourth national oral health epidemiological survey standard, including demographic information, eating habits, oral hygiene habits, oral health care,etc. The epidemiological characteristics of dental caries in children and its effects on jaw function were analyzed.@*Results@#A total of 190 children had dental caries, with a dental caries incidence rate of 22.09%. Dental caries in children s deciduous teeth or permanent teeth was related to age, residence, parents education level,whethe to eat before going to bed, whether eating sweet food, tooth brushing age, daily brushing frequency, whether parents have assisted tooth brushing, whether regular oral examination, whether parents have received oral health guidance( χ 2= 5.04 ,4.70，75.37，7.91，12.03，9.30，7.64，255.47，253.27，11.38, P <0.05). Compared with the noncaries group[(81.52±3.16， 80.54± 1.52，1.92±0.25，31.52±1.62，33.63±3.41，50.72±1.68)°], the sella nasion A point(SNA), sella nasion B point(SNB),A point nasion B point(ANB),frankfot horizontal mandibular plane angle(FH MP),skull nasion mandibular plane angle(SN MP),anteriors relationship palataplane mandibular(Ptm ANS) decreased in the dental caries group[(78.62±2.11，79.35±1.02，1.68±0.32，30.69±0.45，32.15±3.02，48.62±1.21)°](t=78.62,79.35,10.94, 30.69, 32.15, 48.62, P<0.05).@*Conclusion@#The prevalence of caries in children was high and jaw structure abnormalities and dysfunction. It is suggested that caries prevention and control work should be carried out early to strengthen the prevention and control of oral disease education work.

Analysis of epidemiological characteristics and influencing factors of scoliosis among middle school students in Tianjin / 中国学校卫生

Objective@#To understand the prevalence and influencing factors of scoliosis among middle school students in Tianjin, and to provide scientific basis for the prevention and treatment of scoliosis.@*Methods@#Based on stratified cluster random sampling method, 21 679 middle school students from 62 middle schools (35 middle schools and 27 high schools) in Tianjin were selected for scoliosis screening and completed relevant questionnaires.@*Results@#The prevalence of scoliosis in middle school students in Tianjin was 4.00%, with girls (5.13%) higher than that in boys (2.94%), vocational high school (5.96%) higher than that in ordinary senior high school (4.98%) and junior high school (3.00%), the differences were statistically significant ( χ 2=67.56, 71.46 , P <0.01). Multivariate Logistic regression showed that gender, district, school segment, number of physical educaiotn(PE) classes per week, outdoor activity time per day, and days of 60 minutes or more of moderate and vigorous exercise per day in a week were related to the detection rate of scoliosis( OR=0.12-1.95, P <0.05).@*Conclusion@#The detection rate of scoliosis among middle school students in Tianjin varies in gender, resident area and school level, so more attention should be paid to girls, high school students and students in middle economic area. Comprehensive efforts should incorporate duration, intensity and type of physical exercise.

The change trend analysis of incidence of intracerebral hemorrhage in Tengzhou City,Shandong Province from 2013 to 2021 / 中华神经科杂志

Objective:To analyze the changing trend of intracerebral hemorrhage (ICH) incidence among residents with different characteristics during 9 years of comprehensive hypertension prevention and control (hypertension prevention and control) in Tengzhou from 2013 to 2021.Methods:From January 1, 2013 to December 31, 2021, the new ICH cases collected by the Center for Disease Control and Prevention in Tengzhou City were analyzed to calculate the incidence of ICH, and the trend of its distribution was analyzed among residents with different ages, sexes, and between urban and rural areas. The registered population information came from Tengzhou Public Security Bureau. Age and sex standardized incidence was calculated based on the 7th National Population Census in 2020. The Cochran-Armitage test was used to analyze the time and age trends of the incidence.Results:The overall ICH crude and standardized incidence in Tengzhou City decreased from 97.30/100 000 to 52.13/100 000 ( Z=-9.93, P<0.001) and 119.30/100 000 to 50.69/100 000 ( Z=-15.40, P<0.001) from 2013 to 2021, and both elevated to form a single peak in 2020, with 22.58% ( χ 2=24.02, P<0.001) and 18.09% ( χ 2=17.08, P<0.001) higher than in 2019, respectively. The trends in male and female incidence over the same period were similar to the overall trends, and the incidence was higher in males than in females in all years. The incidence of ICH increased with age in all years. The difference of increase in male incidence rate in 2020 was statistically significant in three age groups ≥45 years compared with 2019 (36.29%, 23.57% and 16.18%, respectively, χ 2=6.73, 4.65, 4.00, P<0.001). The incidence of ICH decreased by 70.07% and 36.23% ( Z=18.44, 5.22, P<0.001) in urban and rural areas respectively from 2013 to 2021, whereas increased by 34.15% ( χ 2=10.88, P<0.01) and 22.08% ( χ 2=18.63, P<0.001) in 2020 compared with 2019 separately. Conclusions:The incidence of ICH in Tengzhou from 2013 to 2021 showed a significant downward trend, with the decrease in the incidence of ICH in women exceeding that in men. The decrease in the incidence of ICH in urban areas exceeded that in rural areas, and male morbidity seemingly had a younger trend.

Clinical features of chronic spontaneous urticaria in China: results from a hospital-based multicenter epidemiological survey / 中华皮肤科杂志

Objective:To investigate clinical features of patients with chronic spontaneous urticaria (CSU) in China.Methods:A questionnaire survey was carried out in CSU patients at the first visit and 4 follow-up visits in Departments of Dermatology of 12 third-grade hospitals in northern and southern China from January to December 2019. The survey content included demographic characteristics, pruritus intensity, the number of wheals, concomitant symptoms (such as pain in skin lesions, arthralgia, fever) during the last week prior to the admission, classification and subtypes of urticaria, and previous and current treatment regimens, etc., and the 7-day urticaria activity score (UAS7) was used to evaluate the therapeutic effect. Patients from 9 hospitals in Sichuan, Hubei and Fujian provinces were enrolled into the southern China group, and patients from 3 hospitals in Beijing municipality and Liaoning province were enrolled into the northern China group. Differences between groups were analyzed by two-independent-sample t-test, Mann-Whitney U test or chi-square test. Results:Overall, 1 396 CSU outpatients were enrolled, including 592 males and 804 females; their age was 38.32 ± 16.13 years, 1 109 (79.5%) were aged between 20 and 60 years, and 660 (47.3%) were aged between 20 and 40 years. Their age at onset was 35.85 ± 16.03 years, and the disease duration was 0.50 (0.25, 2.00) years. Allergic diseases were the most common concomitant diseases, 269 (19.3%) patients were diagnosed with accompanied allergic rhinitis or conjunctivitis, 169 (14%) with accompanied eczema/dermatitis, 39 (2.8%) with accompanied asthma; only 19 (1.4%) CSU patients had a history of thyroid diseases, but 133 (9.5%) were positive for anti-thyroid peroxidase (TPO) or anti-thyroglobulin (Tg) antibodies at the visit; elevated serum total IgE levels were observed in 437 (31.3%) patients, and 104 (7.4%) were positive for autoantibodies. There were 1 078 (77.2%) patients in the southern China group and 318 (22.8%) in the northern China group, and the southern China group showed significantly longer disease duration (2.16 ± 4.76 years vs. 1.53 ± 2.80 years, P < 0.001) , and significantly higher proportions of patients with family history (10.7% vs. 3.5%) , with painful lesions (5.8% vs. 0.9%) , and those with arthralgia (10.7% vs. 0) compared with the northern China group (all P < 0.05) . The three most prevalent urticaria subtypes were CSU (835 cases, 49.9%) , symptomatic dermographism (437 cases, 31.3%) , and angioedema (138 cases, 9.9%) , and the proportion of patients with the single diagnosis of CSU was significantly higher in the southern China group (53%) than in the northern China group (38.9%, P < 0.001) . In terms of treatment, 1 365 (97.8%) patients received conventional-dose second-generation H1 antihistamines alone or in combination, and only 31 (2.2%) were treated with antihistamines at high doses; other medicines were mostly administered in combination, and compound glycyrrhizin was most frequently prescribed (36.6%) , while omalizumab was only administered in 7 patients (0.5%) . Conclusions:Significant differences in the clinical features of CSU were observed between northern and southern China. Nowadays traditional modalities are inadequate for the treatment of CSU, and new therapeutic drugs are somewhat promising.