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https://www.readbyqxmd.com/read/29141338/-spatial-and-temporal-clustering-characteristics-of-typhoid-and-paratyphoid-fever-and-its-change-pattern-in-3-provinces-in-southwestern-china-2001-2012
#1
L X Wang, B Yang, M Y Yan, Y Q Tang, Z C Liu, R Q Wang, S Li, L Ma, B Kan
Objective: To analyze the spatial and temporal clustering characteristics of typhoid and paratyphoid fever and its change pattern in Yunnan, Guizhou and Guangxi provinces in southwestern China in recent years. Methods: The incidence data of typhoid and paratyphoid fever cases at county level in 3 provinces during 2001-2012 were collected from China Information System for Diseases Control and Prevention and analyzed by the methods of descriptive epidemiology and geographic informatics. And the map showing the spatial and temporal clustering characters of typhoid and paratyphoid fever cases in three provinces was drawn...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29138738/spatial-distribution-and-trends-of-waterborne-diseases-in-tashkent-province
#2
Veluswami Saravanan Subramanian, Min Jung Cho, Siwei Zoe Tan, Dilorom Fayzieva, Christian Sebaly
Introduction: The cumulative effect of limited investment in public water systems, inadequate public health infrastructure, and gaps in infectious disease prevention increased the incidence of waterborne diseases in Uzbekistan. The objectives of this study were: (1) to spatially analyze the distribution of the diseases in Tashkent Province, (2) to identify the intensity of spatial trends in the province, (3) to identify urban-rural characteristics of the disease distribution, and (4) to identify the differences in disease incidence between pediatric and adult populations of the province...
2017: Central Asian Journal of Global Health
https://www.readbyqxmd.com/read/29133266/mapping-suicide-mortality-in-ohio-a-spatial-epidemiological-analysis-of-suicide-clusters-and-area-level-correlates
#3
Cynthia A Fontanella, Daniel M Saman, John V Campo, Danielle L Hiance-Steelesmith, Jeffrey Bridge, Helen Anne Sweeney, Elisabeth D Root
Previous studies have investigated spatial patterning and associations of area characteristics with suicide rates in Western and Asian countries, but few have been conducted in the United States. This ecological study aims to identify high-risk clusters of suicide in Ohio and assess area level correlates of these clusters. We estimated spatially smoothed standardized mortality ratios (SMR) using Bayesian conditional autoregressive models (CAR) for the period 2004 to 2013. Spatial and spatio-temporal scan statistics were used to detect high-risk clusters of suicide at the census tract level (N=2952)...
November 10, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/29131869/assessing-current-temporal-and-space-time-anomalies-of-disease-incidence
#4
Chih-Chieh Wu, Chien-Hsiun Chen, Sanjay Shete
Approaches used to early and accurately characterize epidemiologic patterns of disease incidence in a temporal and spatial series are becoming increasingly important. Cluster tests are generally designed for retrospective detection of epidemiologic anomalies in a temporal or space-time series. Timely identification of anomalies of disease or poisoning incidence during ongoing surveillance or an outbreak requires the use of sensitive statistical methods that recognize an incidence pattern at the time of occurrence...
2017: PloS One
https://www.readbyqxmd.com/read/29108009/zika-virus-displacement-by-a-chikungunya-outbreak-in-recife-brazil
#5
Tereza Magalhaes, Cynthia Braga, Marli T Cordeiro, Andre L S Oliveira, Priscila M S Castanha, Ana Paula R Maciel, Nathalia M L Amancio, Pollyanne N Gouveia, Valter J Peixoto-da-Silva, Thaciana F L Peixoto, Helena Britto, Priscilla V Lima, Andreza R S Lima, Kerstin D Rosenberger, Thomas Jaenisch, Ernesto T A Marques
BACKGROUND: Several arboviruses, including dengue virus (DENV), Zika virus (ZIKV) and chikungunya virus (CHIKV), transmitted by Aedes mosquitoes, circulate in northeast Brazil. Diseases caused by these viruses are of great public health relevance, however, their epidemiological features in areas where the three viruses co-circulate are scarce. Here, we present analyses of molecular and serological diagnostics in a prospective study of acute febrile patients recruited from May 2015 to May 2016 in Recife, Brazil...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29107954/distribution-and-identification-of-sand-flies-naturally-infected-with-leishmania-from-the-southeastern-peruvian-amazon
#6
Victor Zorrilla, Maxy B De Los Santos, Liz Espada, Rocío Del Pilar Santos, Roberto Fernandez, Albino Urquia, Craig A Stoops, Sarah-Blythe Ballard, Andres G Lescano, Gissella M Vásquez, Hugo O Valdivia
BACKGROUND: Cutaneous leishmaniasis (CL) is an important health problem in the New World affecting civilian and military populations that are frequently exposed in endemic settings. The Peruvian region of Madre de Dios located near the border with Brazil is one of the most endemic CL regions in South America with more than 4,451 reported cases between 2010 and 2015 according to the Peruvian epidemiology directorate. However, little is known regarding the diversity and distribution of sand fly vectors in this region...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29104766/variation-in-neonatal-mortality-and-its-relation-to-country-characteristics-in-sub-saharan-africa-an-ecological-study
#7
Gbenga Ayodele Kayode, Diederick E Grobbee, Mary Amoakoh-Coleman, Evelyn Ansah, Olalekan A Uthman, Kerstin Klipstein-Grobusch
Background: A substantial reduction in neonatal mortality is the main priority to reduce under-five mortality. A clear understanding of the variation in neonatal mortality and the underlying causes is important for targeted intervention. We aimed to explore variation in neonatal mortality and identify underlying causes of variation in neonatal mortality in sub-Saharan Africa (SSA). Methods: This ecological study used 2012 publicly available data from WHO, the US Agency for International Development and the World Bank...
2017: BMJ Global Health
https://www.readbyqxmd.com/read/29099113/mapeo-geoepidemiol%C3%A3-gico-en-la-nueva-vigilancia-de-salud-p%C3%A3%C2%BAblica-el-caso-de-la-malaria-en-chiapas-m%C3%A3-xico-en-2002
#8
Carlos Castillo-Salgado
The new public health surveillance requires at the global, national and local levels the use of new authoritative analytical approaches and tools for better recognition of the epidemiologic characteristics of the priority health events and risk factors affecting the population health. The identification of the events in time and space is of fundamental importance so that the geo-spatial description of the situation of diseases and health events facilitates the identification of social, environmental and health care related risks...
2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/29097638/investigation-of-the-spatial-distribution-of-sandfly-species-and-cutaneous-leishmaniasis-risk-factors-by-using-geographical-information-system-technologies-in-karaisali-district-of-adana-province-turkey
#9
Ozan Artun, Hakan Kavur
BACKGROUND & OBJECTIVES: Cutaneous leishmaniasis displays two epidemiological routes of transmission, zoonotic cutaneous leishmaniasis (ZCL) which includes animal reservoir hosts in the transmission cycle and anthroponotic cutaneous leishmaniasis (ACL), where human is the sole source of infection for the vector sandflies. About 10-13% of CL cases are reported each year from Adana province in Turkey. The aim of this study was to develop a predictive model for determining the spatial risk level of cutaneous leishmaniasis in the Adana province, southern part of Turkey, in relation to environmental factors...
July 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/29096720/neglected-tropical-diseases-in-brazilian-children-and-adolescents-data-analysis-from-2009-to-2013
#10
Eduardo Brandão, Sebastián Romero, Maria Almerice Lopes da Silva, Fred Luciano Neves Santos
BACKGROUND: Neglected tropical diseases (NTDs) prevail in conditions of poverty and contribute to the maintenance of social inequality. Out of the NTDs prioritized by the Brazilian Ministry of Health, four parasitic infections require mandatory notification: acute Chagas disease, leishmaniasis, malaria, and schistosomiasis. Data on the behaviour of these NTDs in the young population are currently limited. This study seeks to analyse the epidemiological aspects of these parasitic infections in children and adolescents in Brazil...
November 3, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29096296/where-to-locate-transit-stops-cross-intersection-profiles-of-ultrafine-particles-and-implications-for-pedestrian-exposure
#11
Wonsik Choi, Dilhara Ranasinghe, J R DeShazo, Jae-Jin Kim, Suzanne E Paulson
Epidemiological studies have shown that exposure to traffic-related pollutants increases incidence of adverse health outcomes. Transit users in cities across the globe commonly spend 15-45 min or more waiting at transit stops each day, often at locations with high levels of pollution from traffic. Here, we investigate the characteristics of concentration profiles of ultrafine particles (UFP) with 5 m spatial resolution across intersections, to determine the best place to site transit stops to minimize exposures...
October 26, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29080763/delineation-of-an-endemic-tick-paralysis-zone-in-southeastern-australia
#12
Zoe Whitfield, Mark Kelman, Michael P Ward
Tick paralysis has a major impact on pet dog and cat populations in southeastern Australia. It results from envenomation by Ixodes holocyclus and Ixodes cornuatus ticks, the role of Ixodes cornuatus in the epidemiology of this disease in Australia being unclear. The aim of this study was to describe the geographical distribution of tick paralysis cases in southeastern Australia using data from a national disease surveillance system and to compare characteristics of "endemic" cases with those reported outside this endemic zone ("sporadic" cases)...
November 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/29080562/large-scale-lagovirus-disease-outbreaks-in-european-brown-hares-lepus-europaeus-in-france-caused-by-rhdv2-strains-spatially-shared-with-rabbits-oryctolagus-cuniculus
#13
Ghislaine Le Gall-Reculé, Evelyne Lemaitre, Stéphane Bertagnoli, Céline Hubert, Sokunthea Top, Anouk Decors, Stéphane Marchandeau, Jean-Sébastien Guitton
Rabbit haemorrhagic disease virus (RHDV) is a lagovirus that causes rabbit haemorrhagic disease (RHD) in European rabbits (Oryctolagus cuniculus). In 2010, a new genotype called RHDV2 emerged in France. It exhibits a larger host range than classical RHDV strains by sporadically infecting different hare species, including the European hare (Lepus europaeus). Phylogenetic analyses revealed that closely related RHDV2 strains circulate locally in both hares and rabbits, and therefore that RHDV2 strains infecting hares do not belong to a lineage that has evolved only in this species...
October 28, 2017: Veterinary Research
https://www.readbyqxmd.com/read/29079889/-spatial-turn-opportunity-challenge-and-methodological-momentum-for-geographical-health-research
#14
REVIEW
Thomas Kistemann, Jürgen Schweikart
The (re)-discovery of the spatial dimension in many sciences has been guided for some time under the designation "spatial turn". Immense progress in geographic information sciences (GIS), global positioning systems (GPS), remote sensing and computer-aided cartography, in addition to geostatistical methods such as spatial distribution analysis and trend analysis, multi-level analysis, spatial data-mining and agent-based modelling, has created entirely new opportunities for spatial analysis and the modelling of spatial, health-relevant processes...
October 27, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/29078771/a-spatial-agent-based-model-of-anopheles-vagus-for-malaria-epidemiology-examining-the-impact-of-vector-control-interventions
#15
Md Zahangir Alam, S M Niaz Arifin, Hasan Mohammad Al-Amin, Mohammad Shafiul Alam, M Sohel Rahman
BACKGROUND: Malaria, being a mosquito-borne infectious disease, is still one of the most devastating global health issues. The malaria vector Anopheles vagus is widely distributed in Asia and a dominant vector in Bandarban, Bangladesh. However, despite its wide distribution, no agent based model (ABM) of An. vagus has yet been developed. Additionally, its response to combined vector control interventions has not been examined. METHODS: A spatial ABM, denoted as ABM[Formula: see text], was designed and implemented based on the biological attributes of An...
October 27, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29078770/entomological-characterization-of-malaria-in-northern-colombia-through-vector-and-parasite-species-identification-and-analyses-of-spatial-distribution-and-infection-rates
#16
Camila González, Astrid Gisell Molina, Cielo León, Nicolás Salcedo, Silvia Rondón, Andrea Paz, Maria Claudia Atencia, Catalina Tovar, Mario Ortiz
BACKGROUND: Malaria remains a worldwide public health concern and, in Colombia, despite the efforts to stop malaria transmission, the incidence of cases has increased over the last few years. In this context, it is necessary to evaluate vector diversity, infection rates, and spatial distribution, to better understand disease transmission dynamics. This information may contribute to the planning and development of vector control strategies. RESULTS: A total of 778 Anopheles mosquitoes were collected in fifteen localities of Córdoba from August 2015 to October 2016...
October 27, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29078391/integrated-field-laboratory-and-theoretical-study-of-pkd-spread-in-a-swiss-prealpine-river
#17
Luca Carraro, Enrico Bertuzzo, Lorenzo Mari, Inês Fontes, Hanna Hartikainen, Nicole Strepparava, Heike Schmidt-Posthaus, Thomas Wahli, Jukka Jokela, Marino Gatto, Andrea Rinaldo
Proliferative kidney disease (PKD) is a major threat to wild and farmed salmonid populations because of its lethal effect at high water temperatures. Its causative agent, the myxozoan Tetracapsuloides bryosalmonae, has a complex lifecycle exploiting freshwater bryozoans as primary hosts and salmonids as secondary hosts. We carried out an integrated study of PKD in a prealpine Swiss river (the Wigger). During a 3-year period, data on fish abundance, disease prevalence, concentration of primary hosts' DNA in environmental samples [environmental DNA (eDNA)], hydrological variables, and water temperatures gathered at various locations within the catchment were integrated into a newly developed metacommunity model, which includes ecological and epidemiological dynamics of fish and bryozoans, connectivity effects, and hydrothermal drivers...
October 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29077712/quantifying-connectivity-between-local-plasmodium-falciparum-malaria-parasite-populations-using-identity-by-descent
#18
Aimee R Taylor, Stephen F Schaffner, Gustavo C Cerqueira, Standwell C Nkhoma, Timothy J C Anderson, Kanlaya Sriprawat, Aung Pyae Phyo, François Nosten, Daniel E Neafsey, Caroline O Buckee
With the rapidly increasing abundance and accessibility of genomic data, there is a growing interest in using population genetic approaches to characterize fine-scale dispersal of organisms, providing insight into biological processes across a broad range of fields including ecology, evolution and epidemiology. For sexually recombining haploid organisms such as the human malaria parasite P. falciparum, however, there have been no systematic assessments of the type of data and methods required to resolve fine scale connectivity...
October 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29075442/transmission-routes-maintaining-a-viral-pathogen-of-steelhead-trout-within-a-complex-multi-host-assemblage
#19
Rachel Breyta, Ilana Brito, Paige Ferguson, Gael Kurath, Kerry A Naish, Maureen K Purcell, Andrew R Wargo, Shannon LaDeau
This is the first comprehensive region wide, spatially explicit epidemiologic analysis of surveillance data of the aquatic viral pathogen infectious hematopoietic necrosis virus (IHNV) infecting native salmonid fish. The pathogen has been documented in the freshwater ecosystem of the Pacific Northwest of North America since the 1950s, and the current report describes the disease ecology of IHNV during 2000-2012. Prevalence of IHNV infection in monitored salmonid host cohorts ranged from 8% to 30%, with the highest levels observed in juvenile steelhead trout...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29069189/nutritional-status-of-children-under-5-years-of-age-in-brazil-evidence-of-nutritional-epidemiological-polarisation
#20
Ingrid Freitas da Silva Pereira, Lára de Melo Barbosa Andrade, Maria Helena Constatino Spyrides, Clélia de Oliveira Lyra
The objective of this study was to evaluate the nutritional status of children under 5 years of age in Brazil in 2009 and its association with social and demographic factors. Data from the Household Budget Survey (Pesquisa de Orçamento Familiar - POF 2008-2009) were used, in which the nutritional profile was evaluated according to the weight-for-age (W/A), height-for-age (H/A) and weight-for-height (W/H) indices (n = 14,569). The association was estimated by applying the Pearson association test, a logistic regression and a correspondence analysis...
October 2017: Ciência & Saúde Coletiva
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