Promoting implementation research and One Health approach to respond the four global health challenges: an interpretation of the Special Programme for Research and Training in Tropical Diseases (TDR) Strategy 2024—2029 / 中国血吸虫病防治杂志

Tropical diseases, notably neglected tropical diseases and infectious diseases of poverty, remain major health problems endangering the poorest and most-marginalized people in the world. The Special Programme for Research and Training in Tropical Diseases (TDR), which is co-sponsored by the World Health Organization, the United Nations Children’s Fund (UNICEF), the United Nations Development Programme (UNDP) and the World Bank, is an important programme that helps facilitate, support, guide and coordinate global efforts to combat tropical diseases. On July 2023, TDR formally issued its 2024—2029 strategy, which proposed the direction and proprieties of global tropical disease prevention and control in the next six years. Based on its original focus on supporting researchers and research institutions from low and middle-income countries to conduct research on tropical diseases and building their research capabilities, this strategy proposed some new developments, which mainly included incorporating tropical disease prevention and control into the overall framework of addressing major global health challenges and achieving the health goals set by the United Nations Sustainable Development Goals (SDGs) to combat tropical diseases and contribute to achieving health goals of SDGs in a collaborative and integrated manner; supporting implementation research and encouraging practitioners and social innovators to participate in research to enable generation of solutions that may be used to solve local health problems; promoting and encouraging the One Health concept and interdisciplinary and cross-departmental collaboration; shifting gradually its focus from disease prevention and control to addressing the health needs of the poorest and most-marginalized populations. These new developments deserve the attention of personnel and institutions in China dedicated to the prevention and control of tropical diseases in order to help their future researches and activities.

Knowledge on prevention and management of snake bite among adults in rural area of West Bengal

Background: Snake bite and its consequences may be largely prevented with adequate knowledge. Better knowledge can lead to positive attitude and subsequently good practices. Hence, it is of utmost need that people should have adequate knowledge regarding snake bite and its management. Aims and Objectives: The aims of this study were to assess the knowledge regarding prevention and management of snake bite among adults in a rural area of West Bengal and to find out any association between sociodemographic profile and knowledge on prevention as well as management of snake bite among the study participants. Materials and Methods: A community-based and observational descriptive study was conducted in the rural field practice area of Medial College, Kolkata, West Bengal for of 2 months. The study participants who were willing to participate in the study and gave written informed consent were included in the study. A pre-designed, pre-tested, and semi-structured data collection form was used. It was developed based on similar type of previous studies and was modified according to the local culture. The data collection form comprised sociodemographic profile of the study participants, their knowledge regarding snake bite, and its prevention and availability of first aid management. Results: A total of 134 participants were included in the study. The mean age was 45.81 ± 8.00 years. It was observed that majority of the study subjects believed in the knowledge that all types of snakes are poisonous (93.2%) and leads to death (90.3%). First aid measures such as application of tourniquet that was seen in only 4.4% of the cases. However, more than half of the study subjects (71.6%) believed in sucking the venom out of the wound. It was noted that higher education status, improved social class had better knowledge score of snake bite prevention and management as compared to their counterparts and this association was found to be statistically significant (P < 0.001). Conclusion: Knowledge of the study subjects on snake bite and its prevention is good, but still a large number of participants have inadequate knowledge on snake bite and its prevention. Community-based awareness program on prevention and management of snake bite, use of personal protective measures, and training of peripheral health workers ware specifically recommended.

Occurrence of Tungiasis in Ceará State, Northeast Brazil: Results of a Rapid Assessment Method

ABSTRACT Background: Systematic data on the occurrence of tungiasis are scarce. Methods: We analyzed data on tungiasis in humans and animals from all municipalities of Ceará State, Northeast Brazil, using a rapid assessment questionnaire. Results: Among the 184 municipalities, 181 (98.3%) reported tungiasis in the past (before 2021) or currently, 120 (65.2%) reported current occurrence, 155 (84.2%) reported severe cases in the past or currently, 47 (25.5 %) reported severe cases currently, and 132 (71.7%) reported tungiasis in animals. Conclusions: Tungiasis is a significant public health concern in Ceará. A One Health approach is required to reduce the disease burden in humans and animals.

Genetic variability of the 16S rRNA gene of Nocardia brasiliensis, the most common causative agent of actinomycetoma in Latin America and the Caribbean

ABSTRACT Mycetoma is a neglected tropical disease (NTD) declared by the World Health Organization (WHO) in 2016. It is characterized by the progressive growth of nodules and granulomatous lesions on the legs, arms, and trunk. It is potentially disfiguring and causes disability or amputations in working-age people from marginalized areas. The causative agents can be fungi (eumycetoma) or actinobacteria (actinomycetoma), the latter being the most common in America and Asia. Nocardia brasiliensis is the most important causal agent of actinomycetoma in the Americas. Taxonomic problems have been reported when identifying this species, so this study aimed to detect the 16S rRNA gene variations in N. brasiliensis strains using an in silico enzymatic restriction technique. The study included strains from clinical cases of actinomycetoma in Mexico, isolated from humans and previously identified as N. brasiliensis by traditional methods. The strains were characterized microscopically and macroscopically, then subjected to DNA extraction and amplification of the 16S rRNA gene by PCR. The amplification products were sequenced, and consensus sequences were constructed and used for genetic identification and in silico restriction enzyme analysis with the New England BioLabs® NEBcutter program. All study strains were molecularly identified as N. brasiliensis; however, in silico restriction analysis detected a diversity in the restriction patterns that were finally grouped and subclassified into 7 ribotypes. This finding confirms the existence of subgroups within N. brasiliensis. The results support the need to consider N. brasiliensis as a complex species.

Current Status of Leprosy in the Rural Area of North Gresik, Indonesia After Eliminated Status Achieved: “Is Leprosy Truly Eliminated?”

@#Introduction: This study aims to provide the current situation of leprosy prevalence and clinical findings in one of the endemic regions of North Gresik City that has already achieved elimination status. Leprosy remains a public health problem in some developing countries, including Indonesia. Indonesia, with two other big countries, India and Brazil, contributed 74% of all the new leprosy cases detected. Even though Indonesia achieved the elimination target from WHO in 2018, the endemic pockets are still scattered, and new cases remain detected each year. Methods: This study is a one-decade retrospective analysis descriptive record based on newly diagnosed cases of leprosy from 2010 until 2020. We use total data sampling of all newly diagnosed leprosy cases and analyze using SPSS. Result: This study found that newly diagnosed cases of leprosy are still discovered each year. 15.7% of newly diagnosed cases were children. MB type was dominated type in this study. MB types are statistically significant in male subjects (35.5%) diagnosed more than one year after the symptoms appear. 40.7% were found with deformity when first diagnosed. Conclusion: This study reports a high rate of contracting leprosy disease in children, with 15.7% of cases. It indicates that disease transmission remains high in the community and might be out of control. The new cases diagnosed dominated with MB type, and 40.7% had deformity when first diagnosed. There was a delayed diagnosis reported that could be caused by ineffective surveillance for early diagnosing new cases.

Perfiles hematológicos en pacientes infectados con malaria en un área endémica del Perú / Hematological profiles of malaria-infected patients in an endemic area of Peru

RESUMEN Objetivos. Evaluar la variación de los perfiles hematológicos antes, durante y después del tratamiento de pacientes infectados con malaria no complicada por Plasmodium vivax (Pv) y P. falciparum (Pf) en una población de la región Loreto. Materiales y métodos. El estudio se realizó entre 2010 y 2012, en Zungarococha (Iquitos). Los 425 participantes tuvieron tres visitas (visita 1-día 0-antes del tratamiento, visita 2-día 7-durante tratamiento, visita 3-día 28-después del tratamiento), hemograma completo, diagnóstico microscópico y molecular (PCR). Resultados. En la primera visita, se encontraron 93 (21,9%) positivos a Pv y 34 (8,0%) a Pf. Todos los positivos mostraron una reducción en los indicadores hematológicos de hematocrito, recuento de glóbulos blancos (RGB), neutrófilos abastonados y segmentados, eosinófilos y plaquetas (p<0.001) en comparación con el grupo negativo. Se encontró un porcentaje mayor de neutrófilos abastonados en Pf y de neutrófilos segmentados en Pv comparado al grupo negativo. Se observó variaciones en los perfiles hematológicos después del tratamiento para ambas especies, los neutrófilos abastonados disminuyeron, las plaquetas aumentaron, los eosinófilos se incrementaron al día 7 y decaen el día 28, el hematocrito y los neutrófilos segmentados disminuyeron al día 7 y se normalizaron el día 28. Las diferencias entre especies en el tiempo mostraron una disminución diaria de neutrófilos abastonados en infectados con Pv que en Pf. Conclusiones. El perfil hematológico en pacientes positivos a malaria no complicada varía en el tiempo durante y después del tratamiento. Estos son indicadores de la progresión de la enfermedad y ayudan en la vigilancia terapéutica de pacientes infectados con Plasmodium.

ABSTRACT Objectives. To evaluate the variation of hematological profiles of patients infected with uncomplicated Plasmodium vivax (Pv) and P. falciparum (Pf) malaria before, during and after treatment in a population of the Loreto region. Materials and methods. This study was conducted between 2010 and 2012, in Zungarococha (Iquitos). The 425 participants had three visits (visit 1-day 0-before treatment, visit 2-day 7-during treatment, visit 3-day 28-after treatment), complete blood count, microscopic and molecular diagnosis (PCR). Results. At the first visit, 93 (21.9%) participants were found positive for Pv and 34 (8.0%) for Pf. All positives showed a reduction in hematocrit, white blood cell count (WBC), ablated and segmented neutrophils, eosinophils and platelets (p<0.001) compared to the negative group. A higher percentage of ablated neutrophils was found in Pf and segmented neutrophils in Pv compared to the negative group. Variations in hematological profiles were observed after treatment for both species; ablated neutrophils decreased, platelets increased, eosinophils increased at day 7 and declined at day 28, hematocrit and segmented neutrophils decreased at day 7 and normalized at day 28. Interspecies differences over time showed a bigger daily decrease in ablated neutrophils in Pv-infected when compared to Pf. Conclusions. The hematological profile in uncomplicated malaria-positive patients varies over time during and after treatment. These are indicators of disease progression and help in the therapeutic surveillance of Plasmodium-infected patients.

Impacto de la transformación digital en la salud tropical / Impact of digital transformation on tropical health

La Transformación Digital (TD) es todo un proceso que busca optimizar la relación usuario­organización, mejorando así los procesos y el desempeño. Con la llegada de la pandemia COVID-19 a principios del año 2020, cuando fue necesario acelerar la inclusión de las Tecnologías de Información y Comunicación (TIC) para continuar ofreciendo los servicios sanitarios, se constituye el sistema peruano de TD como un sistema funcional; con normas, principios y procedimientos; y con técnicas e instrumentos para ordenar las actividades del sector público y con miras a su optimización. Se planteó una investigación de carácter descriptivo para conocer el impacto de la transformación digital en la salud tropical del Perú. Para ello se determinaron el impacto en la gestión de datos, gobernanza, e intercambio de conocimiento e innovación digital de 4 enfermedades metaxénicas y 3 zoonóticas seleccionadas a partir del análisis de los distintos componentes de la sala virtual de situación de salud del Centro Nacional de Epidemiología, Prevención y Control de Enfermedades del Perú. Los datos fueron analizados bajo el Sistema de Información para la Salud (IS4H) de la OPS que permitió valorar la interoperabilidad de los procesos relacionados con la categorización de estas nosologías. Para todos los factores evaluados: gestión de datos, innovación, gestión y gobernanza y gestión e intercambio de conocimiento, los resultados, en general, estuvieron alrededor de la media (3 puntos, en una escala del 1 al 5), siendo el valor más alto (3,3 puntos) para la gestión y gobernanza, y el valor más bajo (2,7 puntos) para la innovación. Se necesita un enfoque más holístico en la salud pública para asegurarse de que se proporcione una respuesta eficaz frente a las enfermedades tropicales. Si los sistemas de salud se colocan en el medio de la acción, esto permitiría tener mayores posibilidades de hacer frente a estas enfermedades mediante el uso adecuado de las herramientas modernas que logren complementar el enfoque tradiciona(AU)

Digital Transformation (TD) is a whole process that seeks to optimize the user-organization relationship, thus improving processes and performance. With the arrival of the COVID-19 pandemic at the beginning of 2020, when it was necessary to accelerate the inclusion of Information and Communication Technologies (ICT) to continue offering health services, the Peruvian DT system was established as a functional system; with norms, principles and procedures; and with techniques and instruments to order the activities of the public sector and with a view to their optimization. A descriptive investigation was proposed to know the impact of digital transformation on tropical health in Peru. For this, the impact on data management, governance, and exchange of knowledge and digital innovation of 4 metaxenic and 3 zoonotic diseases selected from the analysis of the different components of the virtual health situation room of Centro Nacional de Epidemiología, Prevención y Control de Enfermedades of Peru. The data were analyzed under PAHO's Information System for Health (IS4H), which made it possible to assess the interoperability of the processes related to the categorization of these nosologies. For all the factors evaluated: data management, innovation, management and governance, and knowledge management and exchange, the results, in general, were around the average (3 points, on a scale from 1 to 5), with the highest value being highest (3.3 points) for management and governance, and the lowest value (2.7 points) for innovation. A more holistic approach to public health is needed to ensure that an effective response to tropical diseases is provided. If health systems are placed in the middle of the action, this would allow them to have greater possibilities of dealing with these diseases through the appropriate use of modern tools that manage to complement the traditional approach(AU)

Estado clínico epidemiológico de pacientes con diagnóstico confirmado de leptospirosis

RESUMEN Introducción: La leptospirosis es una enfermedad zoonótica de potencial epidémico, principalmente después de lluvias fuerte. Es causada por una bacteria llamada Leptospira. Objetivo: Determinar el estado clínico epidemiológico en pacientes con diagnóstico confirmado de leptospirosis. Métodos: Estudio observacional descriptivo, transversal, realizado en el Centro Provincial de Higiene, Epidemiología y Microbiología de la provincia Camagüey durante el decenio 2011-2020. El universo estuvo constituido por los 90 pacientes con diagnóstico confirmado mediante la encuesta epidemiológica y el resultado de exámenes complementarios. Las variables estudiadas incluyeron: edad, sexo, municipio de residencia, criterios de riesgo, síntomas y signos, época del año y estado al egreso. Los datos se expresaron en valores absolutos y porcentajes. Resultados: Predominó el grupo etario de 40 a 49 años en los hombres 19 (21,1 %), el municipio Camagüey aportó el mayor número de casos 23 (25,5 %), aunque los que mayoritariamente presentaron criterios de riesgo procedían de zona rural 67 (74,4 %) y tenían contacto con perros (73,3 %) y cerdos (48,8 %). Los principales síntomas fueron: fiebre (98,8 %), cefalea (95,5 %). Entre los signos clínicos el íctero (13,5 %) y la hepatomegalia (11,1 %) fueron los más frecuentes. Se comprobó que un número significativo de pacientes no habían sido vacunados. Conclusiones: El estado clínico epidemiológico del conjunto de pacientes estudiados es aceptable, la mayoría de ellos egresa mejorado o curado a pesar de las complicaciones que presentaron.

ABSTRACT Introduction: Leptospirosis is a zoonotic disease with epidemic potential, mainly after a heavy rainfall. It is caused by a bacterium called Leptospira. Objective: To determine the clinical and epidemiological status of patients with confirmed diagnosis of leptospirosis. Methods: An observational, descriptive, cross-sectional study conducted at the Provincial Hygiene, Epidemiology and Microbiology Center in Camaguey over the decade 2011-2020. The scope of the study included the 90 patients whose diagnosis was confirmed by the epidemiological survey and the results of the complementary laboratory tests. The variables examined included: age, sex, municipality of residence, risk criteria, signs and symptoms, season of the year, status at hospital discharge. The data were expressed as absolute values and percent. Results: The age group from 40 to 49 years predominated among males 19 (21.1%). Camaguey municipality accounted for the majority of cases 23 (25.5%), although those with risk criteria were mainly from rural areas 67 (74.4%) and had contact with dogs (73.3%) and pigs (48.8%). The main symptoms were: fever (98.8%) and headache (95.5%); the most common clinical manifestations included jaundice (13.5%) and hepatomegaly (11.1%). It was found that a significant number of patients had not been vaccinated. Conclusions: The clinical and epidemiological status of all the patients studied is acceptable. The majority of them, when discharged from the hospital, are healed or in better conditions despite the complications they presented.

King Cobra and snakebite envenomation: on the natural history, human-snake relationship and medical importance of Ophiophagus hannah

King Cobra (Ophiophagus hannah) has a significant place in many cultures, and is a medically important venomous snake in the world. Envenomation by this snake is highly lethal, manifested mainly by neurotoxicity and local tissue damage. King Cobra may be part of a larger species complex, and is widely distributed across Southeast Asia, southern China, northern and eastern regions as well as the Western Ghats of India, indicating potential geographical variation in venom composition. There is, however, only one species-specific King Cobra antivenom available worldwide that is produced in Thailand, using venom from the snake of Thai origin. Issues relating to the management of King Cobra envenomation (e.g., variation in the composition and toxicity of the venom, limited availability and efficacy of antivenom), and challenges faced in the research of venom (in particular proteomics), are rarely addressed. This article reviews the natural history and sociocultural importance of King Cobra, cases of snakebite envenomation caused by this species, current practice of management (preclinical and clinical), and major toxinological studies of the venom with a focus on venom proteomics, toxicity and neutralization. Unfortunately, epidemiological data of King Cobra bite is scarce, and venom proteomes reported in various studies revealed marked discrepancies in details. Challenges, such as inconsistency in snake venom sampling, varying methodology of proteomic analysis, lack of mechanistic and antivenomic studies, and controversy surrounding antivenom use in treating King Cobra envenomation are herein discussed. Future directions are proposed, including the effort to establish a standard, comprehensive Pan-Asian proteomic database of King Cobra venom, from which the venom variation can be determined. Research should be undertaken to characterize the toxin antigenicity, and to develop an antivenom with improved efficacy and wider geographical utility. The endeavors are aligned with the WHO´s roadmap that aims to reduce the disease burden of snakebite by 50% before 2030.(AU)

King Cobra and snakebite envenomation: on the natural history, human-snake relationship and medical importance of Ophiophagus hannah

Abstract King Cobra (Ophiophagus hannah) has a significant place in many cultures, and is a medically important venomous snake in the world. Envenomation by this snake is highly lethal, manifested mainly by neurotoxicity and local tissue damage. King Cobra may be part of a larger species complex, and is widely distributed across Southeast Asia, southern China, northern and eastern regions as well as the Western Ghats of India, indicating potential geographical variation in venom composition. There is, however, only one species-specific King Cobra antivenom available worldwide that is produced in Thailand, using venom from the snake of Thai origin. Issues relating to the management of King Cobra envenomation (e.g., variation in the composition and toxicity of the venom, limited availability and efficacy of antivenom), and challenges faced in the research of venom (in particular proteomics), are rarely addressed. This article reviews the natural history and sociocultural importance of King Cobra, cases of snakebite envenomation caused by this species, current practice of management (preclinical and clinical), and major toxinological studies of the venom with a focus on venom proteomics, toxicity and neutralization. Unfortunately, epidemiological data of King Cobra bite is scarce, and venom proteomes reported in various studies revealed marked discrepancies in details. Challenges, such as inconsistency in snake venom sampling, varying methodology of proteomic analysis, lack of mechanistic and antivenomic studies, and controversy surrounding antivenom use in treating King Cobra envenomation are herein discussed. Future directions are proposed, including the effort to establish a standard, comprehensive Pan-Asian proteomic database of King Cobra venom, from which the venom variation can be determined. Research should be undertaken to characterize the toxin antigenicity, and to develop an antivenom with improved efficacy and wider geographical utility. The endeavors are aligned with the WHO´s roadmap that aims to reduce the disease burden of snakebite by 50% before 2030.

A case report of human intoxication due to a snakebite by the opisthoglyphous dipsadid Thamnodynastes lanei Bailey, Thomas & Silva-Jr, 2005

Abstract We present a case of human intoxication due to a snakebite by the opisthoglyphous dipsadid Thamnodynastes lanei. A 26-year-old man was bitten on the right hand and was not medicated. Bleeding lasted a few seconds, while paresthesia, chills, and headache persisted for up to 10 hours. The pain disappeared after a week, and the edema, itching, and prickling persisted for another 3 days. Although this patient's symptoms were typical of bites by South American opisthoglyphous snakes, they persisted longer than those of bites by some congeneric species. Our report adds a species to the list of medically relevant snakes.

Quantitative study of the evolution of notified cases of Zika Virus and the relationship with rainfall indexes in the state of Rondônia / Estudo quantitativo da evolução dos casos notificados de Zika Vírus e a relação com índices pluviométricos no estado de Rondônia

Introduction: the Zika Virus is a virus transmitted by the mosquito Aedes aegypti, which is of great medical importance because it causes numerous public health issues. Objective: describe the scenario of the number of probable cases of the Zika virus in the state of Rondônia from January 2016 to October 20, 2018, demonstrating the relationship between the evolutions of cases during the analyzed period with a climatic factor during the period (rainfall index). Methodology: the data collected for statistical analysis were acquired through epidemiological bulletins published by the Secretariat of Health Surveillance and by the Ministry of Health. The pluviometric data used in the study were acquired from the Meteorological Station of the Ouro Preto Experimental Station ­ ESTEX/OP (Comissão Executiva do Plano de Lavoura Cacaueira ­ CEPLAC/RO), located in the central region of the state of Rondônia. Results: the data showed a total of 1,107 probable cases of acute disease caused by the Zika virus in the period from January 2016 to October 20, 2018 in the state of Rondônia, with 89% of this total being recorded only in 2016, showing a relationship with the high rainfall rate that occurred in the same year in the state. Conclusion: after analysis, it is concluded that, there was a considerable number of probable cases of Zika Virus in the state of Rondônia, in addition, the data showed that during the analyzed period, there was a relationship between the evolution of new cases with the rainfall index in the region. Preventive measures must be adopted in order to minimize the number of new cases. The population's awareness of the mosquito's reproduction and development can be an alternative to be adopted by the public health sectors of the state.

Introdução: o Zika Vírus é um vírus transmitido pelo mosquito Aedes aegypti, que possui grande importância médica por causar inúmeros problemas de saúde pública. Objetivo: descrever o cenário do número de casos prováveis do vírus Zika no estado de Rondônia no período de janeiro de 2016 a 20 de outubro de 2018, demonstrando a relação entre a evolução dos casos durante o período analisado com um fator climático durante o período (índice pluviométrico). Metodologia: os dados coletados para análises estatísticas foram adquiridos através de boletins epidemiológicos publicados pela Secretaria de Vigilância em Saúde e Ministério da Saúde. Os dados pluviométricos utilizados no estudo foram adquiridos junto à estação meteorológica da Comissão Executiva do Plano da Lavoura Cacaueira ­ CEPLAC, localizado na região central do estado de Rondônia. Resultados: os dados demonstraram um total de 1.107 casos prováveis da doença aguda causada pelo Vírus Zika no período de janeiro de 2016 a 20 de outubro de 2018 no Estado de Rondônia, sendo 89% desse total registrado somente no ano de 2016, demostrando relação com o elevado índice pluviométrico ocorrido nesse mesmo ano no estado. Conclusão: após análise, conclui-se que, houve um número considerável de casos prováveis de Zika Vírus no estado de Rondônia, além disso, os dados mostraram que durante o período analisado, houve uma relação entre a evolução de novos casos com o índice pluviométrico na região. Medidas preventivas devem ser adotadas com o objetivo de minimizar o número de novos casos. A conscientização da população sobre a reprodução e desenvolvimento do mosquito pode ser uma alternativa a ser adotada pelos setores de saúde pública do estado.

Diagnostic performance of C-reactive protein level and its role as a potential biomarker of severe dengue in adults

Objective: To determine the relationship between C-reactive protein (CRP) level and the severity of dengue and the potential use of CRP in predicting acute dengue infection. Methods: A prospective observational study was performed on dengue patients admitted to a tertiary care hospital in southern India. All patients of age above 18 years, diagnosed with dengue were included in the study. The detailed laboratory parameters pertaining to dengue were recorded. CRP levels were estimated and compared between groups i.e. severe and non-severe dengue. CRP cut-off value was detected using the receiver-operator curve. Results: Totally 98 patients with a mean age of 40 years were included. Among them, 11.2% of the patients suffered from severe dengue, 54.1% of the cases had non-severe dengue without warning signs, and 34.7% had non-severe dengue with warning signs. The median CRP was significantly higher in patients with severe dengue compared to patients with non-severe dengue (96.2 mg/dL vs. 5.3 mg/dL). Univariate logistic regression analysis showed that the odd's ratio (OR) of CRP was 1.053 (P≤0.001, 95% CI=1.029-1.078). CRP at a cutoff value of 21.6 mg/L (0.929 AUC) had excellent sensitivity (100%) and specificity (81.6%) in predicting severe dengue infection. Multivariate logistic regression analysis showed that CRP (OR=1.089, P=0.013) and ALT (OR=1.010, P=0.034) were statistically significant independent predictors of dengue severity. Conclusions: CRP level could be used as a potential biomarker to predict severity of dengue in adults.

Diagnostic performance of C-reactive protein level and its role as a potential biomarker of severe dengue in adults

Objective: To determine the relationship between C-reactive protein (CRP) level and the severity of dengue and the potential use of CRP in predicting acute dengue infection. Methods: A prospective observational study was performed on dengue patients admitted to a tertiary care hospital in southern India. All patients of age above 18 years, diagnosed with dengue were included in the study. The detailed laboratory parameters pertaining to dengue were recorded. CRP levels were estimated and compared between groups i.e. severe and non-severe dengue. CRP cut-off value was detected using the receiver-operator curve. Results: Totally 98 patients with a mean age of 40 years were included. Among them, 11.2% of the patients suffered from severe dengue, 54.1% of the cases had non-severe dengue without warning signs, and 34.7% had non-severe dengue with warning signs. The median CRP was significantly higher in patients with severe dengue compared to patients with non-severe dengue (96.2 mg/dL vs. 5.3 mg/dL). Univariate logistic regression analysis showed that the odd's ratio (OR) of CRP was 1.053 (P≤0.001, 95% CI=1.029-1.078). CRP at a cutoff value of 21.6 mg/L (0.929 AUC) had excellent sensitivity (100%) and specificity (81.6%) in predicting severe dengue infection. Multivariate logistic regression analysis showed that CRP (OR=1.089, P=0.013) and ALT (OR=1.010, P=0.034) were statistically significant independent predictors of dengue severity. Conclusions: CRP level could be used as a potential biomarker to predict severity of dengue in adults.

Global burden and challenges of parasitic diseases in Africa / 中国血吸虫病防治杂志

Parasitic diseases are common infectious diseases closely related to poverty,which are mainly endemic in the trop-ical and subtropical regions.Africa is the major epidemic area of parasitic diseases,and the global burden of malaria and schisto-somiasis is over 85% in Africa.This paper reviews the disease burden,regional distribution and control strategies of the main parasitic diseases in Africa,in order to promote the prevention and control of parasitic diseases in this area.

Effect of short-term global health training on tropical diseases and its relat-ed factors / 中国血吸虫病防治杂志

Objective To investigate the effect of short-term global health training on tropical diseases in China,so as to provide the reference in professional trainings.Methods The study took the short-term global health training project on tropical diseases in China as an example.The structured questionnaires were distributed to each trainee pre-and post-training course. Results A total of 89 trainees were included in the survey,and 68.5%(61 cases)of the trainees were older than 35 years and 85.4%(76 cases)of the trainees came from provincial institutes.The passing rate for the test of global health knowledge was sig-nificantly improved from the pre-training test(18.0%,16/89)to the post one(68.2%,58/85)(χ2=44.930,P<0.05).The knowledge of global health was closely related to the professionals'capacity,i.e.,the education level,age,professional title, and experience of international cooperation,but was not statistically related to their genders. Conclusion This kind of short-term trainings not only greatly improves the professionals'knowledge of tropical diseases control,but also is expected to play a leading role in the international cooperation of global health and tropical diseases control in the future.

Anisakiasis in Southeast Asia:A story of new tropical disease?

Anisakiasis is an important worm infestation. It is seen in some non-tropical countries and becomes an important issue in coastal medicine. However, in the few recent years, there are some reports on occurrence of anisakiasis in tropical countries. In this specific short article, the authors review and present the situation of anisakiasis in Southeast Asia. It can be said that anisakiasis becomes a new focused interest in tropical coastal medicine at present.

Anisakiasis in Southeast Asia: A story of new tropical disease?

Anisakiasis is an important worm infestation. It is seen in some non-tropical countries and becomes an important issue in coastal medicine. However, in the few recent years, there are some reports on occurrence of anisakiasis in tropical countries. In this specific short article, the authors review and present the situation of anisakiasis in Southeast Asia. It can be said that anisakiasis becomes a new focused interest in tropical coastal medicine at present.

Is imidacloprid an effective alternative for controlling pyrethroid-resistant populations of Triatoma infestans (Hemiptera: Reduviidae) in the Gran Chaco ecoregion?

The prevention of Chagas disease is based primarily on the chemical control of Triatoma infestans (Klug) using pyrethroid insecticides. However, high resistance levels, correlated with control failures, have been detected in Argentina and Bolivia. A previous study at our laboratory found that imidacloprid could serve as an alternative to pyrethroid insecticides. We studied the delayed toxicity of imidacloprid and the influence of the blood feeding condition of the insect on the toxicity of this insecticide; we also studied the effectiveness of various commercial imidacloprid formulations against a pyrethroid-resistant T. infestans population from the Gran Chaco ecoregion. Variations in the toxic effects of imidacloprid were not observed up to 72 h after exposure and were not found to depend on the blood feeding condition of susceptible and resistant individuals. Of the three different studied formulations of imidacloprid on glass and filter paper, only the spot-on formulation was effective. This formulation was applied to pigeons at doses of 1, 5, 20 and 40 mg/bird. The nymphs that fed on pigeons treated with 20 mg or 40 mg of the formulation showed a higher mortality rate than the control group one day and seven days post-treatment (p < 0.01). A spot-on formulation of imidacloprid was effective against pyrethroid-resistant T. infestans populations at the laboratory level.

Mansonelliasis, a neglected parasitic disease in Haiti

Reported in Haiti as early as 1923, Mansonella ozzardi is still a neglected disease ignored by the health authorities of the country. This review is an update on the geographic distribution of the coastal foci of mansonelliasis in Haiti, the epidemiological profile and prevalence rates of microfilariae in people living in endemic areas, the clinical impact of the parasite on health and the efficiency of the transmission of the parasite among three Culicoides biting-midge species identified as vectors in Haiti. Additionally, interest in establishing a treatment programme to combat this parasite using a single dose of ivermectin is emphasised.