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https://www.readbyqxmd.com/read/29786527/retrospective-analysis-of-bluetongue-farm-risk-profile-definition-based-on-biology-farm-management-practices-and-climatic-data
#1
Stefano Cappai, Federica Loi, Annamaria Coccollone, Marino Contu, Paolo Capece, Michele Fiori, Simona Canu, Cipriano Foxi, Sandro Rolesu
Bluetongue (BT) is a vector-borne disease transmitted by species of Culicoides midges (Diptera: Ceratopogonidae). Many studies have contributed to clarifying various aspects of its aetiology, epidemiology and vector dynamic; however, BT remains a disease of epidemiological and economic importance that affects ruminants worldwide. Since 2000, the Sardinia region has been the most affected area of the Mediterranean basin. The region is characterised by wide pastoral areas for sheep and represents the most likely candidate region for the study of Bluetongue virus (BTV) distribution and prevalence in Italy...
July 1, 2018: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29781416/the-risk-of-rabies-spread-in-japan-a-mathematical-modelling-assessment
#2
H Kadowaki, K Hampson, K Tojinbara, A Yamada, K Makita
Rabies was eliminated from Japan in 1957. In the 60 years since elimination, vaccination coverage has declined and dog ownership habits have changed. The purpose of this study was to assess the current risk of rabies spread in Japan. A spatially explicit transmission model was developed at the 1 km2 grid scale for Hokkaido and Ibaraki Prefectures. Parameters associated with dog movement and bite injuries were estimated using historical records from Japan, and were used with previously published epidemiological parameters...
May 21, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29780811/does-size-matter-to-models-exploring-the-effect-of-herd-size-on-outputs-of-a-herd-level-disease-spread-simulator
#3
Mary Van Andel, Tracey Hollings, Richard Bradhurst, Andrew Robinson, Mark Burgman, M Carolyn Gates, Paul Bingham, Tim Carpenter
Disease spread modeling is widely used by veterinary authorities to predict the impact of emergency animal disease outbreaks in livestock and to evaluate the cost-effectiveness of different management interventions. Such models require knowledge of basic disease epidemiology as well as information about the population of animals at risk. Essential demographic information includes the production system, animal numbers, and their spatial locations yet many countries with significant livestock industries do not have publically available and accurate animal population information at the farm level that can be used in these models...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29778684/modeled-and-perceived-rf-emf-noise-and-air-pollution-and-symptoms-in-a-population-cohort-is-perception-key-in-predicting-symptoms
#4
Astrid L Martens, Marije Reedijk, Tjabe Smid, Anke Huss, Danielle Timmermans, Maciej Strak, Wim Swart, Virissa Lenters, Hans Kromhout, Robert Verheij, Pauline Slottje, Roel C H Vermeulen
BACKGROUND: Psychosocial research has shown that perceived exposure can influence symptom reporting, regardless of actual exposure. The impact of this phenomenon on the interpretation of results from epidemiological research on environmental determinants of symptoms is unclear. OBJECTIVE: Our aim was to compare associations between modeled exposures, the perceived level of these exposures and reported symptoms (non-specific symptoms, sleep disturbances, and respiratory symptoms) for three different environmental exposures (radiofrequency electromagnetic fields (RF-EMF), noise, and air pollution)...
May 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29774299/spatial-distribution-and-cluster-analysis-of-dengue-using-self-organizing-maps-in-andhra-pradesh-india-2011-2013
#5
Srinivasa Rao Mutheneni, Rajasekhar Mopuri, Suchithra Naish, Deepak Gunti, Suryanarayana Murty Upadhyayula
Background and objectives: Dengue is an emerging and re-emerging infectious disease, transmitted by mosquitoes. It is mostly prevalent in tropical and sub-tropical regions of the world, particularly, in Asia-Pacific region. To understand the epidemiology and spatial distribution of dengue, a retrospective surveillance study was conducted in the state of Andhra Pradesh, India during 2011-2013. Material and methods: District-wise disease endemicity levels were mapped through geographical information system (GIS) tools...
February 2018: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29772888/mapping-malaria-risk-using-geographic-information-systems-and-remote-sensing-the-case-of-bahir-dar-city-ethiopia
#6
Amare Sewnet Minale, Kalkidan Alemu
The main objective of this study was to develop a malaria risk map for Bahir Dar City, Amhara, which is situated south of Lake Tana on the Ethiopian plateau. Rainfall, temperature, altitude, slope and land use/land cover (LULC), as well as proximity measures to lake, river and health facilities, were investigated using remote sensing and geographical information systems. The LULC variable was derived from a 2012 SPOT satellite image by supervised classification, while 30-m spatial resolution measurements of altitude and slope came from the Shuttle Radar Topography Mission...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772883/development-of-the-first-georeferenced-map-of-rhipicephalus-boophilus-spp-in-mexico-from-1970-to-date-and-prediction-of-its-spatial-distribution
#7
Yazmin Alcala-Canto, Juan Antonio Figueroa-Castillo, Froylán Ibarra-Velarde, Yolanda Vera-Montenegro, María Eugenia Cervantes-Valencia, Abdelfattah Z M Salem, Jorge Alfredo Cuéllar-Ordaz
The tick genus Ripicephalus (Boophilus), particularly R. microplus, is one of the most important ectoparasites that affects livestock health and considered an epidemiological risk because it causes significant economic losses due, mainly, to restrictions in the export of infested animals to several countries. Its spatial distribution has been tied to environmental factors, mainly warm temperatures and high relative humidity. In this work, we integrated a dataset consisting of 5843 records of Rhipicephalus spp...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772880/detection-of-spatial-aggregation-of-cases-of-cancer-from-data-on-patients-and-health-centres-contained-in-the-minimum-basic-data-set
#8
Pablo Fernández-Navarro, Jose-Miguel Sanz-Anquela, Angel Sánchez Pinilla, Rosario Arenas Mayorga, Carmen Salido-Campos, Gonzalo López-Abente
The feasibility of the Minimum Basic Data Set (MBDS) as a tool in cancer research was explored monitoring its incidence through the detection of spatial clusters. Case-control studies based on MBDS and marked point process were carried out with the focus on the residence of patients from the Prince of Asturias University Hospital in Alcalá de Henares (Madrid, Spain). Patients older than 39 years with diagnoses of stomach, colorectal, lung, breast, prostate, bladder and kidney cancer, melanoma and haematological tumours were selected...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772872/spatial-analysis-for-the-epidemiological-study-of-cardiovascular-diseases-a-systematic-literature-search
#9
Carlos Mena, Cesar Sepúlveda, Eduardo Fuentes, Yony Ormazábal, Iván Palomo
Cardiovascular diseases (CVDs) are the primary cause of death and disability in de world, and the detection of populations at risk as well as localization of vulnerable areas is essential for adequate epidemiological management. Techniques developed for spatial analysis, among them geographical information systems and spatial statistics, such as cluster detection and spatial correlation, are useful for the study of the distribution of the CVDs. These techniques, enabling recognition of events at different geographical levels of study (e...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29771349/study-of-lymphoedema-of-non-filarial-origin-in-the-northwest-region-of-cameroon-spatial-distribution-profiling-of-cases-and-socio-economic-aspects-of-podoconiosis
#10
Samuel Wanji, Jonas A Kengne-Ouafo, Kebede Deribe, Ayok M Tembei, Abdel Jelil Njouendou, Dizzel Bita Tayong, David D Sofeu-Feugaing, Fabrice R Datchoua-Poutcheu, Jorge Cano, Emanuele Giorgi, Yolande F Longang-Tchounkeu, Peter A Enyong, Melanie J Newport, Gail Davey
Background: Although podoconiosis is endemic in Cameroon, little is known about its epidemiology and spatial distribution. Methods: This cross-sectional, population-based study enrolled all adults (≥15 y) residing in the districts of the northwest region of Cameroon for 10 or more years. Participants were interviewed and had a physical examination. The study outcomes were prevalence estimates of lymphoedema and podoconiosis. House-to-house screening was conducted by Community Health Implementers (CHIs)...
May 16, 2018: International Health
https://www.readbyqxmd.com/read/29768596/sociodemographic-and-environmental-analysis-for-the-occurrence-of-anti-leptospira-antibodies-in-dogs-of-teresina-piau%C3%A3-brazil
#11
Elís Rosélia Dutra de Freitas Siqueira Silva, Vanessa Castro, Ana Lys Bezerra Barradas Mineiro, Maria das Graças Prianti, Gustavo Henrique Chaves Martins, Misael das Virgens Santana, Lucas Moreira Brito, Silvana Maria Medeiros de Sousa Silva
Leptospirosis is a worldwide zoonosis whose transmission is interlinked by multiple factors in the man-animal-ecosystem interface. This study aimed to evaluate the risk factors for the occurrence of anti-Leptospira antibodies in dogs in the capital Teresina (PI), and to determine their spatial distribution. Five hundred fifty-eight dog blood samples were submitted to the Microscopic Serum Agglutination (MSA) test. We applied semi-structured questionnaires to dog owners and obtained the area of residence for projection in geographical maps...
May 2018: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/29768428/socio-environmental-factors-and-diarrheal-diseases-in-under-five-year-old-children-in-the-state-of-tocantins-brazil
#12
Volmar Morais Fontoura, Iolanda Graepp-Fontoura, Floriacy Stabnow Santos, Marcelino Santos Neto, Hanari Santos de Almeida Tavares, Maria Onice Lopes Bezerra, Marcela de Oliveira Feitosa, Adriano Figuerêdo Neves, Jesuane Cavalcante Melo de Morais, Luiz Fernando Costa Nascimento
BACKGROUND: Diarrhea is a waterborne disease that affects children, especially those under 5 years of age. The objective of this study was to identify the spatial patterns of distribution of diarrheal disease in under 5-year-old children in the State of Tocantins, Brazil, from 2008 to 2013. METHODS: Geoprocessing tools were used to carry out an epidemiological study, to prepare thematic maps in the TerraView 4.2.2 software based on secondary data. General indicators of the disease, presence of spatial dependence through the Global Moran's Index (I) and the Spatial Association Index (LISA) were described...
2018: PloS One
https://www.readbyqxmd.com/read/29764368/airborne-geographical-dispersal-of-q-fever-from-livestock-holdings-to-human-communities-a-systematic-review-and-critical-appraisal-of-evidence
#13
Nicholas J Clark, Ricardo J Soares Magalhães
BACKGROUND: Q fever is a zoonotic disease caused by Coxiella burnetii. This bacterium survives harsh conditions and attaches to dust, suggesting environmental dispersal is a risk factor for outbreaks. Spatial epidemiology studies collating evidence on Q fever geographical contamination gradients are needed, as human cases without occupational exposure are increasing worldwide. METHODS: We used a systematic literature search to assess the role of distance from ruminant holdings as a risk factor for human Q fever outbreaks...
May 15, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29762018/combining-measurements-from-mobile-monitoring-and-a-reference-site-to-develop-models-of-ambient-ultrafine-particle-number-concentration-at-residences
#14
Matthew C Simon, Allison P Patton, Elena N Naumova, Jonathan I Levy, Prashant Kumar, Doug Brugge, John L Durant
Significant spatial and temporal variation in ultrafine particle (UFP; <100 nanometers in diameter) concentrations creates challenges in developing predictive models for epidemiological investigations. We compared the performance of land-use regression models built by combining mobile and stationary measurements (hybrid model) with a regression model built using mobile measurements only (mobile model) in Chelsea and Boston, MA (USA). In each study area, particle number concentration (PNC; a proxy for UFP) was measured at a stationary reference site and with a mobile laboratory driven along a fixed route during a ~1-year monitoring period...
May 15, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29750144/towards-the-elimination-of-paediatric-tuberculosis-in-high-income-immigrant-receiving-countries-a-25-year-conventional-and-molecular-epidemiological-case-study
#15
Vivek Dhawan, Jennifer Bown, Angela Lau, Deanne Langlois-Klassen, Dennis Kunimoto, Ravi Bhargava, Linda Chui, Simon M Collin, Richard Long
The epidemiology of tuberculosis (TB) in high-income countries is increasingly dictated by immigration. The influence of this trend on paediatric TB and TB elimination are not well defined. We undertook a 25-year conventional and molecular epidemiologic study of paediatric TB in Alberta, one of four major immigrant-receiving provinces in Canada. All isolates of Mycobacterium tuberculosis were DNA fingerprinted using standard methodology. Between 1990 and 2014, 176 children aged 0-14 years were diagnosed with TB...
April 2018: ERJ Open Research
https://www.readbyqxmd.com/read/29742272/spatial-pattern-and-temporal-trend-of-mortality-due-to-tuberculosis
#16
Ana Angélica Rêgo de Queiroz, Thaís Zamboni Berra, Maria Concebida da Cunha Garcia, Marcela Paschoal Popolin, Aylana de Souza Belchior, Mellina Yamamura, Danielle Talita Dos Santos, Luiz Henrique Arroyo, Ricardo Alexandre Arcêncio
OBJECTIVES: To describe the epidemiological profile of mortality due to tuberculosis (TB), to analyze the spatial pattern of these deaths and to investigate the temporal trend in mortality due to tuberculosis in Northeast Brazil. METHODS: An ecological study based on secondary mortality data. Deaths due to TB were included in the study. Descriptive statistics were calculated and gross mortality rates were estimated and smoothed by the Local Empirical Bayesian Method...
2018: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/29741995/an-outbreak-of-japanese-encephalitis-in-adults-in-northern-china-2013-a-population-based-study
#17
Xiaolong Li, Xiaoyan Gao, Shihong Fu, Huanyu Wang, Zhi Lu, Ying He, Wenwen Lei, Guodong Liang
BACKGROUND: A Japanese encephalitis (JE) epidemic occurred in 2013 in China. The aim of this study was to determine the spatial-temporal pattern of JE cases in adults occurring in 2013, as well as identify potential hotspots of incidences in the afflicted regions in China. METHODS/PRINCIPAL FINDINGS: To generate a spatial-temporal pattern of JE cases in China, epidemiological and demographic data between 2011 and 2013 were collected. Our results indicate that the total number of JE cases in 2013 was significantly higher compared with those in 2011 and 2012...
May 9, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29738078/tick-borne-disease-risk-in-a-forest-food-web
#18
Richard S Ostfeld, Taal Levi, Felicia Keesing, Kelly Oggenfuss, Charles D Canham
Changes to the community ecology of hosts for zoonotic pathogens, particularly rodents, are likely to influence the emergence and prevalence of zoonotic diseases worldwide. However, the complex interactions between abiotic factors, pathogens, vectors, hosts, and both food resources and predators of hosts are difficult to disentangle. Here we (1) use 19 years of data from six large field plots in southeastern New York to compare the effects of hypothesized drivers of interannual variation in Lyme disease risk, including the abundance of acorns, rodents, and deer, as well as a series of climate variables; and (2) employ landscape epidemiology to explore how variation in predator community structure and forest cover influences spatial variation in the infection prevalence of ticks for the Lyme disease bacterium, Borrelia burgdorferi, and two other important tick-borne pathogens, Anaplasma phagocytophilum and Babesia microti...
May 8, 2018: Ecology
https://www.readbyqxmd.com/read/29734766/risk-factors-and-spatial-clusters-of-cryptosporidium-infection-among-school-age-children-in-a-rural-region-of-eastern-china
#19
Hao Zheng, Jianfeng He, Li Wang, Rong Zhang, Zhen Ding, Wenbiao Hu
The epidemiological features of Cryptosporidium infection among school-age children in China still remain unclear. Hereby, a cross-sectional study of 1637 children aged 3⁻9 years was designed to investigate the risk factors and spatial clusters of Cryptosporidium infection in a rural region of Eastern China. Stool specimens collected from participants were examined using the auramine-phenol and modified acid-fast staining. Univariable and multivariable analyses were performed to identify the risk factors of Cryptospordium infection...
May 6, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29728001/predicting-daily-pm-2-5-concentrations-in-texas-using-high-resolution-satellite-aerosol-optical-depth
#20
Xueying Zhang, Yiyi Chu, Yuxuan Wang, Kai Zhang
BACKGROUND AND OBJECTIVE: The regulatory monitoring data of particulate matter with an aerodynamic diameter <2.5μm (PM2.5 ) in Texas have limited spatial and temporal coverage. The purpose of this study is to estimate the ground-level PM2.5 concentrations on a daily basis using satellite-retrieved Aerosol Optical Depth (AOD) in the state of Texas. METHODS: We obtained the AOD values at 1-km resolution generated through the Multi-Angle Implementation of Atmospheric Correction (MAIAC) algorithm based on the images retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) satellites...
August 1, 2018: Science of the Total Environment
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