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https://www.readbyqxmd.com/read/28707044/seasonal-bushmeat-hunger-in-the-congo-basin
#1
Edmond Dounias, Mitsuo Ichikawa
Unlike the Sudano-sahelian regions, which are confronted to severe periods of food shortage, tropical rainforests are known to provide a constant supply of a great diversity of food resources that mitigates the risk of food starvation for omnivorous humans. Nevertheless, several African forest ethnic groups suffer from a seasonal hunger induced by depletion in the procurement of bushmeat, which is a food of paramount importance. Although the diet remains well balanced and meets all the nutritional needs, the bushmeat cravers loose weight and experience a stress that affects their well-being...
July 13, 2017: EcoHealth
https://www.readbyqxmd.com/read/28643091/sylvatic-plague-vaccine-partially-protects-prairie-dogs-cynomys-spp-in-field-trials
#2
Tonie E Rocke, Daniel W Tripp, Robin E Russell, Rachel C Abbott, Katherine L D Richgels, Marc R Matchett, Dean E Biggins, Randall Griebel, Greg Schroeder, Shaun M Grassel, David R Pipkin, Jennifer Cordova, Adam Kavalunas, Brian Maxfield, Jesse Boulerice, Michael W Miller
Sylvatic plague, caused by Yersinia pestis, frequently afflicts prairie dogs (Cynomys spp.), causing population declines and local extirpations. We tested the effectiveness of bait-delivered sylvatic plague vaccine (SPV) in prairie dog colonies on 29 paired placebo and treatment plots (1-59 ha in size; average 16.9 ha) in 7 western states from 2013 to 2015. We compared relative abundance (using catch per unit effort (CPUE) as an index) and apparent survival of prairie dogs on 26 of the 29 paired plots, 12 with confirmed or suspected plague (Y...
June 22, 2017: EcoHealth
https://www.readbyqxmd.com/read/28643090/burrow-dusting-or-oral-vaccination-prevents-plague-associated-prairie-dog-colony-collapse
#3
Daniel W Tripp, Tonie E Rocke, Jonathan P Runge, Rachel C Abbott, Michael W Miller
Plague impacts prairie dogs (Cynomys spp.), the endangered black-footed ferret (Mustela nigripes) and other sensitive wildlife species. We compared efficacy of prophylactic treatments (burrow dusting with deltamethrin or oral vaccination with recombinant "sylvatic plague vaccine" [RCN-F1/V307]) to placebo treatment in black-tailed prairie dog (C. ludovicianus) colonies. Between 2013 and 2015, we measured prairie dog apparent survival, burrow activity and flea abundance on triplicate plots ("blocks") receiving dust, vaccine or placebo treatment...
June 22, 2017: EcoHealth
https://www.readbyqxmd.com/read/28634781/infectious-disease-surveillance-in-the-woylie-bettongia-penicillata
#4
Kim Skogvold, Kristin S Warren, Bethany Jackson, Carly S Holyoake, Kathryn Stalder, Joanne M Devlin, Simone D Vitali, Adrian F Wayne, Alistair Legione, Ian Robertson, Rebecca J Vaughan-Higgins
Wild populations of the critically endangered woylie (Bettongia penicillata) recently declined by 90% in southwest Western Australia. Increased predation is the leading hypothesis for decline, but disease may be playing a role increasing susceptibility to predation. To explore this possibility, we surveyed woylie populations in the wild, in captivity and in a predator-free sanctuary for exposure to, and infection with, four known pathogens of macropods: herpesviruses, Wallal and Warrego orbiviruses, and Toxoplasma gondii...
June 20, 2017: EcoHealth
https://www.readbyqxmd.com/read/28631117/multi-criteria-decision-analysis-to-model-ixodes-ricinus-habitat-suitability
#5
Raphaël Rousseau, Guy McGrath, Barry J McMahon, Sophie O Vanwambeke
Tick-borne diseases present a major threat to both human and livestock health throughout Europe. The risk of infection is directly related to the presence of its vector. Thereby it is important to know their distribution, which is strongly associated with environmental factors: the presence and availability of a suitable habitat, of a suitable climate and of hosts. The present study models the habitat suitability for Ixodes ricinus in Ireland, where data on tick distribution are scarce. Tick habitat suitability was estimated at a coarse scale (10 km) with a multi-criteria decision analysis (MCDA) method according to four different scenarios (depending on the variables used and on the weights granted to each of them)...
June 19, 2017: EcoHealth
https://www.readbyqxmd.com/read/28631116/environmental-factors-and-zoonotic-pathogen-ecology-in-urban-exploiter-species
#6
REVIEW
Jamie L Rothenburger, Chelsea H Himsworth, Nicole M Nemeth, David L Pearl, Claire M Jardine
Knowledge of pathogen ecology, including the impacts of environmental factors on pathogen and host dynamics, is essential for determining the risk that zoonotic pathogens pose to people. This review synthesizes the scientific literature on environmental factors that influence the ecology and epidemiology of zoonotic microparasites (bacteria, viruses and protozoa) in globally invasive urban exploiter wildlife species (i.e., rock doves [Columba livia domestica], European starlings [Sturnus vulgaris], house sparrows [Passer domesticus], Norway rats [Rattus norvegicus], black rats [R...
June 19, 2017: EcoHealth
https://www.readbyqxmd.com/read/28620680/landscape-climate-and-hantavirus-cardiopulmonary-syndrome-outbreaks
#7
REVIEW
Paula Ribeiro Prist, Paulo Sérgio D Andrea, Jean Paul Metzger
We performed a literature review in order to improve our understanding of how landscape and climate drivers affect HCPS outbreaks. Anthropogenic landscape changes such as forest loss, fragmentation and agricultural land uses are related with a boost in hantavirus reservoir species abundance and hantavirus prevalence in tropical areas, increasing HCPS risk. Additionally, higher precipitation, especially in arid regions, favors an increase in vegetational biomass, which augments the resources for reservoir rodents, also increasing HCPS risk...
June 15, 2017: EcoHealth
https://www.readbyqxmd.com/read/28620679/are-poultry-or-wild-birds-the-main-reservoirs-for-avian-influenza-in-bangladesh
#8
Mohammad Mahmudul Hassan, Md Ahasanul Hoque, Nitish Chandra Debnath, Mat Yamage, Marcel Klaassen
Avian influenza viruses (AIV) are of great socioeconomic and health concern, notably in Southeast Asia where highly pathogenic strains, such as highly pathogenic avian influenza (HPAI) H5N1 and other H5 and H7 AIVs, continue to occur. Wild bird migrants are often implicated in the maintenance and spread of AIV. However, little systematic surveillance of wild birds has been conducted in Southeast Asia to evaluate whether the prevalence of AIV in wild birds is higher than in other parts of the world where HPAI outbreaks occur less frequently...
June 15, 2017: EcoHealth
https://www.readbyqxmd.com/read/28616660/arenavirus-dynamics-in-experimentally-and-naturally-infected-rodents
#9
Joachim Mariën, Benny Borremans, Sophie Gryseels, Bram Vanden Broecke, Beate Becker-Ziaja, Rhodes Makundi, Apia Massawe, Jonas Reijniers, Herwig Leirs
Infectious diseases of wildlife are typically studied using data on antibody and pathogen levels. In order to interpret these data, it is necessary to know the course of antibodies and pathogen levels after infection. Such data are typically collected using experimental infection studies in which host individuals are inoculated in the laboratory and sampled over an extended period, but because laboratory conditions are controlled and much less variable than natural conditions, the immune response and pathogen dynamics may differ...
June 14, 2017: EcoHealth
https://www.readbyqxmd.com/read/28584951/an-integrative-eco-epidemiological-analysis-of-west-nile-virus-transmission
#10
Annelise Tran, Grégory L'Ambert, Gilles Balança, Sophie Pradier, Vladimir Grosbois, Thomas Balenghien, Thierry Baldet, Sylvie Lecollinet, Agnès Leblond, Nicolas Gaidet-Drapier
West Nile disease, caused by the West Nile virus (WNV), is a mosquito-borne zoonotic disease affecting humans and horses that involves wild birds as amplifying hosts. The mechanisms of WNV transmission remain unclear in Europe where the occurrence of outbreaks has dramatically increased in recent years. We used a dataset on the competence, distribution, abundance, diversity and dispersal of wild bird hosts and mosquito vectors to test alternative hypotheses concerning the transmission of WNV in Southern France...
June 5, 2017: EcoHealth
https://www.readbyqxmd.com/read/28584950/how-program-monitoring-drives-innovation
#11
Helen Petach
No abstract text is available yet for this article.
June 5, 2017: EcoHealth
https://www.readbyqxmd.com/read/28536757/non-human-hosts-and-zika-virus-maintenance
#12
LETTER
Sora Yasri, Viroj Wiwanitkit
No abstract text is available yet for this article.
May 23, 2017: EcoHealth
https://www.readbyqxmd.com/read/28536756/bunjil-s-charge
#13
Mark Olival-Bartley
No abstract text is available yet for this article.
May 23, 2017: EcoHealth
https://www.readbyqxmd.com/read/28523412/epidemiological-risk-factors-for-animal-influenza-a-viruses-overcoming-species-barriers
#14
REVIEW
Kate A Harris, Gudrun S Freidl, Olga S Munoz, Sophie von Dobschuetz, Marco De Nardi, Barbara Wieland, Marion P G Koopmans, Katharina D C Stärk, Kristien van Reeth, Gwen Dauphin, Adam Meijer, Erwin de Bruin, Ilaria Capua, Andy A Hill, Rowena Kosmider, Jill Banks, Kim Stevens, Sylvie van der Werf, Vincent Enouf, Karen van der Meulen, Ian H Brown, Dennis J Alexander, Andrew C Breed
Drivers and risk factors for Influenza A virus transmission across species barriers are poorly understood, despite the ever present threat to human and animal health potentially on a pandemic scale. Here we review the published evidence for epidemiological risk factors associated with influenza viruses transmitting between animal species and from animals to humans. A total of 39 papers were found with evidence of epidemiological risk factors for influenza virus transmission from animals to humans; 18 of which had some statistical measure associated with the transmission of a virus...
May 18, 2017: EcoHealth
https://www.readbyqxmd.com/read/28512730/examining-the-role-of-transmission-of-chelonid-alphaherpesvirus-5
#15
Andrea Chaves, A Alonso Aguirre, Kinndle Blanco-Peña, Andrés Moreira-Soto, Otto Monge, Ana M Torres, José L Soto-Rivas, Yuanan Lu, Didiher Chacón, Luis Fonseca, Mauricio Jiménez, Gustavo Gutiérrez-Espeleta, Michael Lierz
Marine turtle fibropapillomatosis (FP) is a devastating neoplastic disease characterized by single or multiple cutaneous and visceral fibrovascular tumors. Chelonid alphaherpesvirus 5 (ChHV5) has been identified as the most likely etiologic agent. From 2010 to 2013, the presence of ChHV5 DNA was determined in apparently normal skin, tumors and swab samples (ocular, nasal and cloacal) collected from 114 olive ridley (Lepidochelys olivacea) and 101 green (Chelonia mydas) turtles, with and without FP tumors, on the Pacific coasts of Costa Rica and Nicaragua...
May 16, 2017: EcoHealth
https://www.readbyqxmd.com/read/28500422/are-reptiles-reservoirs-of-leptospirosis-a-brief-discussion-based-on-serological-studies
#16
LETTER
Felipe Fornazari
No abstract text is available yet for this article.
May 12, 2017: EcoHealth
https://www.readbyqxmd.com/read/28500421/seasonal-fluctuations-of-astrovirus-but-not-coronavirus-shedding-in-bats-inhabiting-human-modified-tropical-forests
#17
Anne Seltmann, Victor M Corman, Andrea Rasche, Christian Drosten, Gábor Á Czirják, Henry Bernard, Matthew J Struebig, Christian C Voigt
Emerging infectious diseases (EIDs) are considered a major threat to global health. Most EIDs appear to result from increased contact between wildlife and humans, especially when humans encroach into formerly pristine habitats. Habitat deterioration may also negatively affect the physiology and health of wildlife species, which may eventually lead to a higher susceptibility to infectious agents and/or increased shedding of the pathogens causing EIDs. Bats are known to host viruses closely related to important EIDs...
May 12, 2017: EcoHealth
https://www.readbyqxmd.com/read/28470362/pathogen-exposure-in-cattle-at-the-livestock-wildlife-interface
#18
Malavika Rajeev, Mathew Mutinda, Vanessa O Ezenwa
Land use is an important driver of variation in human infectious disease risk, but less is known about how land use affects disease risk in livestock. To understand how land use is associated with disease risk in livestock, we examined patterns of pathogen exposure in cattle across two livestock ranching systems in rural Kenya: private ranches with low- to medium-intensity cattle production and high wildlife densities, and group ranches with high-intensity cattle production and low wildlife densities. We surveyed cattle from six ranches for three pathogens: Brucella spp...
May 3, 2017: EcoHealth
https://www.readbyqxmd.com/read/28439781/batrachochytrium-dendrobatidis-and-the-decline-and-survival-of-the-relict-leopard-frog
#19
Jef R Jaeger, Anthony W Waddle, Rebeca Rivera, D Tyler Harrison, Silas Ellison, Matthew J Forrest, Vance T Vredenburg, Frank van Breukelen
Epizootic disease caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd) is a major driver of amphibian declines, yet many amphibians declined before the pathogen was described. The Relict Leopard Frog, Rana onca (=Lithobates onca), was nearly extinct, with the exception of populations within a few geothermal springs. Growth of Bd, however, is limited by high water temperature, and geothermal springs may have provided refuge during outbreaks of chytridiomycosis. We conducted field surveys and laboratory experiments to assess the susceptibility of R...
April 24, 2017: EcoHealth
https://www.readbyqxmd.com/read/28508154/estimating-loss-of-brucella-abortus-antibodies-from-age-specific-serological-data-in-elk
#20
J A Benavides, D Caillaud, B M Scurlock, E J Maichak, W H Edwards, P C Cross
Serological data are one of the primary sources of information for disease monitoring in wildlife. However, the duration of the seropositive status of exposed individuals is almost always unknown for many free-ranging host species. Directly estimating rates of antibody loss typically requires difficult longitudinal sampling of individuals following seroconversion. Instead, we propose a Bayesian statistical approach linking age and serological data to a mechanistic epidemiological model to infer brucellosis infection, the probability of antibody loss, and recovery rates of elk (Cervus canadensis) in the Greater Yellowstone Ecosystem...
June 2017: EcoHealth
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