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Topic:Disease control

Disease control in horses encompasses the strategies and measures implemented to prevent, manage, and eradicate infectious and non-infectious diseases within equine populations. This field involves the study of pathogen transmission, host-pathogen interactions, and the development of effective vaccination and biosecurity protocols. Disease control also includes monitoring and surveillance of equine health to identify outbreaks and implement timely interventions. Key aspects of disease control in horses involve understanding the epidemiology of equine diseases, improving diagnostic techniques, and enhancing treatment options. This page compiles peer-reviewed research studies and scholarly articles that explore various methodologies, technologies, and practices aimed at controlling diseases in horses, with a focus on improving overall equine health and welfare.
Utility of examining fallen stock data to monitor health-related events in equids: Application to an outbreak of West Nile Virus in France in 2015.
Transboundary and emerging diseases    March 6, 2019   Volume 66, Issue 3 1417-1419 doi: 10.1111/tbed.13150
Cazeau G, Leblond A, Sala C, Froustey M, Beck C, Lecollinet S, Tapprest J.Few studies about the use of quantitative equine mortality data for monitoring purposes are available. Our study evaluated the utility of monitoring emerging equine diseases using mortality data collected by rendering plants. We used approaches involving modelling of historical mortality fluctuations and detection algorithm methods to analyse changes in equine mortality in connection with the West Nile Virus (WNV) outbreak that occurred between July and September 2015 along the Mediterranean coast of France. Two weeks after the first equine WNV case was detected by clinical surveillance, detec...
Equine syndromic surveillance in Colorado using veterinary laboratory testing order data.
PloS one    March 1, 2019   Volume 14, Issue 3 e0211335 doi: 10.1371/journal.pone.0211335
Burkom H, Estberg L, Akkina J, Elbert Y, Zepeda C, Baszler T.The Risk Identification Unit (RIU) of the US Dept. of Agriculture's Center for Epidemiology and Animal Health (CEAH) conducts weekly surveillance of national livestock health data and routine coordination with agricultural stakeholders. As part of an initiative to increase the number of species, health issues, and data sources monitored, CEAH epidemiologists are building a surveillance system based on weekly syndromic counts of laboratory test orders in consultation with Colorado State University laboratorians and statistical analysts from the Johns Hopkins University Applied Physics Laborator...
Comparing the effects of non-homogenous mixing patterns on epidemiological outcomes in equine populations: A mathematical modelling study.
Scientific reports    March 1, 2019   Volume 9, Issue 1 3227 doi: 10.1038/s41598-019-40151-2
Milwid RM, O'Sullivan TL, Poljak Z, Laskowski M, Greer AL.Disease transmission models often assume homogenous mixing. This assumption, however, has the potential to misrepresent the disease dynamics for populations in which contact patterns are non-random. A disease transmission model with an SEIR structure was used to compare the effect of weighted and unweighted empirical equine contact networks to weighted and unweighted theoretical networks generated using random mixing. Equine influenza was used as a case study. Incidence curves generated with the unweighted empirical networks were similar in epidemic duration (5-8 days) and peak incidence (30.8...
The equine species as Trojan horse for Borna Disease Virus-1?
The veterinary quarterly    February 19, 2019   Volume 38, Issue 1 126-128 doi: 10.1080/01652176.2019.1551172
van der Kolk JH.No abstract available
Vets asked to keep swabbing for equine flu.
The Veterinary record    February 16, 2019   Volume 184, Issue 7 204 doi: 10.1136/vr.l715
No abstract available
Development of a rapid and sensitive recombinase polymerase amplification-lateral flow assay for detection of Burkholderia mallei.
Transboundary and emerging diseases    February 15, 2019   Volume 66, Issue 2 1016-1022 doi: 10.1111/tbed.13126
Saxena A, Pal V, Tripathi NK, Goel AK.Burkholderia mallei, a potential biothreat agent is the aetiological agent of glanders, a zoonotic disease primarily affecting equines. B. mallei shares close genetic proximity with B. pseudomallei, the aetiological agent of melioidosis. Hence, molecular detection of B. mallei and its differentiation from B. pseudomallei has always been challenging. Early diagnosis of glanders is critical for timely treatment in humans and disease containment in animals. In this study a recombinase polymerase amplification-lateral flow (RPA-LF) assay has been developed for early and accurate detection of B. ma...
Phylogenetic analysis of Theileria equi and Babesia caballi sequences from thoroughbred mares and foals in Trinidad.
Parasitology research    February 13, 2019   Volume 118, Issue 4 1171-1177 doi: 10.1007/s00436-019-06240-x
Sant C, Allicock OM, d'Abadie R, Charles RA, Georges K.The agents of equine piroplasmosis, Theileria equi and Babesia caballi, are endemic in Trinidad, West Indies. While transmission is mainly by ixodid ticks, transplacental transmission of T. equi has also been reported. This disease has contributed to foetal losses as well as morbidity and mortality of neonatal foals and adult horses. Previous 18S rRNA-based phylogenetic studies indicated a noticeable degree of variation within and among B. caballi and T. equi isolates from different geographical regions. The objective of this study was to evaluate the diversity of T. equi and B. caballi obtain...
Absence of adaptive evolution is the main barrier against influenza emergence in horses in Asia despite frequent virus interspecies transmission from wild birds.
PLoS pathogens    February 7, 2019   Volume 15, Issue 2 e1007531 doi: 10.1371/journal.ppat.1007531
Zhu H, Damdinjav B, Gonzalez G, Patrono LV, Ramirez-Mendoza H, Amat JAR, Crispell J, Parr YA, Hammond TA, Shiilegdamba E, Leung YHC, Peiris M....Virus ecology and evolution play a central role in disease emergence. However, their relative roles will vary depending on the viruses and ecosystems involved. We combined field studies, phylogenetics and experimental infections to document with unprecedented detail the stages that precede initial outbreaks during viral emergence in nature. Using serological surveys we showed that in the absence of large-scale outbreaks, horses in Mongolia are routinely exposed to and infected by avian influenza viruses (AIVs) circulating among wild birds. Some of those AIVs are genetically related to an avian...
Highlights of recent clinically relevant papers.
Equine veterinary education    February 5, 2019   Volume 31, Issue 3 114-115 doi: 10.1111/eve.13054
Wright S.No abstract available
Plasma transfusions in horses with typhlocolitis/colitis.
The Canadian veterinary journal = La revue veterinaire canadienne    February 2, 2019   Volume 60, Issue 2 193-196 
Arroyo LG, Sears W, Gomez DE.The outcome of treatment of horses with plasma for typhlocolitis/colitis at the Ontario Veterinary College-Health Sciences Centre was evaluated. Horses with typhlocolitis/colitis that received a plasma transfusion had higher odds of dying than did non-transfused horses. The clinical usefulness of transfusing plasma to hospitalized hypoproteinemic horses is questioned. . Les résultats du traitement des chevaux à l’aide de plasma pour la typhlocolite/colite au Health Sciences Centre de l’Ontario Veterinary College ont été évalués. Les chevaux atteints de typhlocolite/colite qui avaient...
An economic analysis of a contingency model utilising vaccination for the control of equine influenza in a non-endemic country.
PloS one    January 24, 2019   Volume 14, Issue 1 e0210885 doi: 10.1371/journal.pone.0210885
Rosanowski SM, Carpenter TE, Adamson D, Rogers CW, Pearce P, Burns M, Cogger N.Equine influenza (EI) is an infectious respiratory disease of horses that has never been reported in New Zealand (NZ). However, the 2007 EI outbreak in Australia, previously EI free, spurred the NZ government and stakeholders into evaluating alternative EI control strategies in order to economically justify any future decision to eradicate or manage EI. To build on the policy debate, this paper presents an epinomic (epidemiologic and economic) modelling approach to evaluate alternative control strategies. An epidemiologic model to determine how alternative EI control strategies influence the d...
Validation of an immunoblot assay employing an objective reading system and used as a confirmatory test in equine infectious anaemia surveillance programs.
Journal of virological methods    January 23, 2019   Volume 266 77-88 doi: 10.1016/j.jviromet.2019.01.012
Equine infectious anaemia (EIA) is a blood borne disease that is listed among the notifiable diseases of the World Organisation for Animal Health (OIE). EIA is also regulated by the OIE for the international trading provisions and is generally subject to control programmes. Since 2011, Italy has been conducting a surveillance plan based on a three-tier diagnostic system, using a serological ELISA as screening test, an agar gel immunodiffusion test (AGIDT) as a confirmatory method, and an immunoblot (IB) as an alternative confirmatory assay for discordant results between the first two tests. As...
Florida clade 1 equine influenza virus in France.
The Veterinary record    January 19, 2019   Volume 184, Issue 3 101 doi: 10.1136/vr.l1203
Paillot R, Pitel PH, Pronost S, Legrand L, Fougerolle S, Jourdan M, Marcillaud-Pitel C.No abstract available
The first molecular detection and genetic diversity of Babesia caballi and Theileria equi in horses of Gansu province, China.
Ticks and tick-borne diseases    January 16, 2019   Volume 10, Issue 3 528-532 doi: 10.1016/j.ttbdis.2019.01.003
Wang J, Liu J, Yang J, Wang X, Li Z, Jianlin X, Li X, Xiang Q, Li Y, Liu Z, Luo J, Guan G, Yin H.Equine piroplasmosis, caused by Theileria equi and Babesia caballi, is an economically important tick-borne disease worldwide. In the current study, 242 blood samples were randomly collected from horses in Zhangye city of Gansu province, China. The presence and genetic diversity of piroplasms were evaluated with a nested PCR assay, gene sequencing and phylogenetic analysis. The results showed that seventy-five (31.0%) samples were positive for piroplasms. Sequences analysis showed that seventy-three (30.2%) were positive for T. equi, and seven (2.9%) for B. caballi, five of which (2.1%) were i...
Surveillance for Salmonella in horses in Great Britain.
The Veterinary record    January 13, 2019   Volume 184, Issue 2 56-58 doi: 10.1136/vr.l149
Francesca Martelli, Sue Kidd and Joanna Lawes of the APHA discuss surveillance findings relating to Salmonella isolates from horses, and also the antimicrobial resistance patterns being seen.
Equine disease surveillance: quarterly update.
The Veterinary record    January 13, 2019   Volume 184, Issue 2 52-55 doi: 10.1136/vr.l148
No abstract available
Validation of modified radio-frequency identification tag firmware, using an equine population case study.
PloS one    January 9, 2019   Volume 14, Issue 1 e0210148 doi: 10.1371/journal.pone.0210148
Milwid RM, O'Sullivan TL, Poljak Z, Laskowski M, Greer AL.Contact networks can be used to assess disease spread potential within a population. However, the data required to generate the networks can be challenging to collect. One method of collecting this type of data is by using radio-frequency identification (RFID) tags. The OpenBeacon RFID system generally consists of tags and readers. Communicating tags should be within 10m of the readers, which are powered by an external power source. The readers are challenging to implement in agricultural settings due to the lack of a power source and the large area needed to be covered. OpenBeacon firmware wa...
Molecular Detection and Phylogenetic Analysis of Anaplasma phagocytophilum in Horses in Korea.
The Korean journal of parasitology    December 31, 2018   Volume 56, Issue 6 559-565 doi: 10.3347/kjp.2018.56.6.559
Seo MG, Ouh IO, Choi E, Kwon OD, Kwak D.The identification and characterization of pathogenic and zoonotic tick-borne diseases like granulocytic anaplasmosis are essential for developing effective control programs. The differential diagnosis of pathogenic Anaplasma phagocytophilum and non-pathogenic A. phagocytophilum-like Anaplasma spp. is important for implementing effective treatment from control programs. The objective of the present study was to investigate the prevalence of Anaplasma spp. in horses in Korea by nucleotide sequencing and restriction enzyme fragment length polymorphism assay. Of the 627 horses included in the stu...
Managing the risk of Hendra virus spillover in Australia using ecological approaches: A report on three community juries.
PloS one    December 31, 2018   Volume 13, Issue 12 e0209798 doi: 10.1371/journal.pone.0209798
Degeling C, Gilbert GL, Annand E, Taylor M, Walsh MG, Ward MP, Wilson A, Johnson J.Hendra virus (HeV) infection is endemic in Australian flying-fox populations. Habitat loss has increased the peri-urban presence of flying-foxes, increasing the risk of contact and therefore viral 'spillovers' into horse and human populations. An equine vaccine is available and horse-husbandry practices that minimize HeV exposure are encouraged, but their adoption is suboptimal. Ecological approaches-such as habitat creation and conservation-could complement vaccination and behavioural strategies by reducing spillover risks, but these are controversial. We convened three community juries (two ...
Cyathostomin faecal egg counts in horse farms from Central Italy.
Veterinaria italiana    December 31, 2018   Volume 54, Issue 4 317-322 doi: 10.12834/VetIt.787.3812.1
Sconza S, Di Cesare A, Iorio R, Bartolini R, Paoletti B, Traversa D.Cyathostomins,  or  'small  strongyles',  are  the  most  important  equine  helminths  because  of their  worldwide  distribution,  spread  of  anthelmintic‑resistant  populations,  and  pathogenic impact.  The  so‑called  'selective  treatment'  of  those  animals  exceeding  a  certain  faecal  egg  count  (FEC)  has  recently  been  proposed  to  implement  cyathostomin  control  programmes.  The present study evaluated the extent of egg shedding in 475 horses living in 12 farms from 3 regions of Italy. All examined farms and 224 horses (47.6%...
Effects of 2 preparation methods and long-term storage on structural integrity and bacterial loads of equine amnion.
Veterinary surgery : VS    December 20, 2018   Volume 48, Issue 2 222-228 doi: 10.1111/vsu.13138
McCoy AM, Smith RL, Secor EJ, Roady PJ.To determine the influence of tissue preparation and long-term storage methods on structural integrity and risk of bacterial contamination of equine amnion. Methods: Prospective experimental investigation SAMPLE POPULATION: Amniotic membranes from 8 healthy mares (n = 440 tested samples). Methods: Samples for baseline bacteriology and histology were taken after removal of debris. The remaining tissue was divided and processed with 0.05% chlorhexidine or 2% iodine/0.25% acetic acid. Processed amnion samples were assigned to 1 of 9 combinations of storage media (saline, chlorhexidine, acetic...
Translation and application of equine genomics: The Havemeyer principles.
Equine veterinary journal    December 13, 2018   Volume 51, Issue 2 273 doi: 10.1111/evj.13051
Bailey E, Finno C.No abstract available
Continued Evidence of Decline in the Enzootic Activity of Western Equine Encephalitis Virus in Colorado.
Journal of medical entomology    December 12, 2018   Volume 56, Issue 2 584-588 doi: 10.1093/jme/tjy214
Robb LL, Hartman DA, Rice L, deMaria J, Bergren NA, Borland EM, Kading RC.Western equine encephalitis (WEE) was once prevalent and routinely isolated from mosquitoes in Colorado; however, isolations of Western equine encephalitis virus (WEEV) have not been reported from mosquito pools since the early 1990s. The objective of the present study was to test pools of Culex tarsalis (Coquillett) mosquitoes sampled from Weld County, CO, in 2016 for evidence of WEEV infection. Over 7,000 mosquitoes were tested, but none were positive for WEEV RNA. These data indicate that WEEV either was not circulating enzootically in Northern Colorado, was very rare, and would require muc...
Detection of equine coronavirus in horses in the United Kingdom.
The Veterinary record    December 7, 2018   Volume 184, Issue 4 123 doi: 10.1136/vr.105098
Bryan J, Marr CM, Mackenzie CJ, Mair TS, Fletcher A, Cash R, Phillips M, Pusterla N, Mapes S, Foote AK.No abstract available
West Nile virus in horses – What do you need to know to diagnose the disease?
The Canadian veterinary journal = La revue veterinaire canadienne    December 5, 2018   Volume 59, Issue 10 1119-1120 
Paré J, Moore A.No abstract available
Burkholderia mallei: The dynamics of networks and disease transmission.
Transboundary and emerging diseases    December 4, 2018   Volume 66, Issue 2 715-728 doi: 10.1111/tbed.13071
Cárdenas NC, Galvis JOA, Farinati AA, Grisi-Filho JHH, Diehl GN, Machado G.Glanders is a highly infectious zoonotic disease caused by Burkholderia mallei. The transmission of B. mallei occurs mainly by direct contact, and horses are the natural reservoir. Therefore, the identification of infection sources within horse populations and animal movements is critical to enhance disease control. Here, we analysed the dynamics of horse movements from 2014 to 2016 using network analysis in order to understand the flow of animals in two hierarchical levels, municipalities and farms. The municipality-level network was used to investigate both community clustering and the bala...
Comparison of the dynamic networks of four equine boarding and training facilities.
Preventive veterinary medicine    November 26, 2018   Volume 162 84-94 doi: 10.1016/j.prevetmed.2018.11.011
Milwid RM, O'Sullivan TL, Poljak Z, Laskowski M, Greer AL.Contact networks can be analyzed to assess the potential for disease spread throughout the network. The lack of Canadian facility-level equine contact data makes the characterization of the equine contact structure difficult. Therefore, the purpose of this study was to use empirical contact data to characterize and compare equine network characteristics between equine facilities in Ontario. Contact pattern data from 4 equine facilities were collected using radio-frequency identification tags. The collected data were used to form 7 static contact networks (1 for each study day) for each facilit...
Surveillance of animal diseases through implementation of a Bayesian spatio-temporal model: A simulation example with neurological syndromes in horses and West Nile Virus.
Preventive veterinary medicine    November 26, 2018   Volume 162 95-106 doi: 10.1016/j.prevetmed.2018.11.010
Hedell R, Andersson MG, Faverjon C, Marcillaud-Pitel C, Leblond A, Mostad P.A potentially sensitive way to detect disease outbreaks is syndromic surveillance, i.e. monitoring the number of syndromes reported in the population of interest, comparing it to the baseline rate, and drawing conclusions about outbreaks using statistical methods. A decision maker may use the results to take disease control actions or to initiate enhanced epidemiological investigations. In addition to the total count of syndromes there are often additional pieces of information to consider when assessing the probability of an outbreak. This includes clustering of syndromes in space and time as...
Spread of the emerging equine-like G3P[8] DS-1-like genetic backbone rotavirus strain in Brazil and identification of potential genetic variants.
The Journal of general virology    November 20, 2018   Volume 100, Issue 1 7-25 doi: 10.1099/jgv.0.001171
Luchs A, da Costa AC, Cilli A, Komninakis SCV, Carmona RCC, Boen L, Morillo SG, Sabino EC, Timenetsky MDCST.In 2013, the equine-like G3P[8] DS-1-like rotavirus (RVA) strain emerged worldwide. In 2016, this strain was reported in northern Brazil. The aims of the study were to conduct a retrospective genetic investigation to identify the possible entry of these atypical strains in Brazil and to describe their distribution across a representative area of the country. From 2013 to 2017, a total of 4226 faecal samples were screened for RVA by ELISA, PAGE, RT-PCR and sequencing. G3P[8] represented 20.9 % (167/800) of all RVA-positive samples, further subdivided as equine-like G3P[8], DS-1-like (11.0 %...
Nicotine-sensitive acetylcholine receptors are relevant pharmacological targets for the control of multidrug resistant parasitic nematodes.
International journal for parasitology. Drugs and drug resistance    November 20, 2018   Volume 8, Issue 3 540-549 doi: 10.1016/j.ijpddr.2018.11.003
Charvet CL, Guégnard F, Courtot E, Cortet J, Neveu C.The control of parasitic nematodes impacting animal health relies on the use of broad spectrum anthelmintics. However, intensive use of these drugs has led to the selection of resistant parasites in livestock industry. In that respect, there is currently an urgent need for novel compounds able to control resistant parasites. Nicotine has also historically been used as a de-wormer but was removed from the market when modern anthelmintics became available. The pharmacological target of nicotine has been identified in nematodes as acetylcholine-gated ion channels. Nicotinic-sensitive acetylcholin...
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