Preventive veterinary medicine最新文献

{"title":"Lifetime health care costs for dogs based on data from seven veterinary clinics in Denmark","authors":"Søren Saxmose Nielsen ,&nbsp;Caroline Hindborg Larsen ,&nbsp;Julie Moth Frederiksen ,&nbsp;Tove Christensen ,&nbsp;Peter Sandøe","doi":"10.1016/j.prevetmed.2024.106384","DOIUrl":"10.1016/j.prevetmed.2024.106384","url":null,"abstract":"<div><div>Reports indicate that owners believe the health care costs for their dogs are too high, yet few studies report on the actual costs. Most studies are based on surveys of owners, and there have been no studies carried out in Europe. The objective of our study was therefore to provide estimates of lifetime health care costs for dogs based on billed costs taken from records from veterinary clinics in Denmark. Data were collected in late 2023 and were based on invoices from seven clinics of different sizes and locations and related to health care for dogs born in 2006–2011. Only dogs that were treated in the same clinic for their entire lives were included. The records were split into visits that were considered to include basic health care costs such as vaccinations, and costs associated with conditions that were considered acute, chronic or requiring surgery. The costs were then summarised for each dog within each clinic. A total of 17,893 invoices for 716 dogs were included. These consisted of 8821 visits for basic health care and 5899 and 1861 visits for acute and chronic conditions, respectively, along with 1312 visits related to surgery. The median inflation-corrected cost per visit was 133 EUR, and the median lifetime health care cost was approximately 2800 EUR, covering a median lifespan of 10 years. These costs varied greatly, with a breed-weight-adjusted interquartile range of 672–1521 EUR in the least expensive clinic, which was small and located in a rural area, to 1076–4962 EUR (interquartile range) for a clinic in a major city. Health care costs can encompass various levels of treatment and different treatment quality, but this aspect was not evaluated. We conclude that, on average, a visit to the veterinary clinic costs approximately 133 EUR (as of 2023) and that dogs typically visit the clinic 2.1 times per year over their lifetime. However, there is major variation in costs among both dogs and clinics. Overall, the costs identified fell within a similar range to those observed in questionnaire-based studies from other countries. However, the substantial variation warrants further investigation, for example comparing differences in health costs for different breeds of dogs and the differences between different kinds of clinics. We also found that the median yearly health care costs for a dog were less than 5 % of the mean costs for a person in the Danish public health care system.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106384"},"PeriodicalIF":2.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Operational lessons learned from simulating an elimination response to a transboundary animal disease in wild animals","authors":"K. Chalkowski ,&nbsp;K.M. Pepin ,&nbsp;M.J. Lavelle ,&nbsp;R.S. Miller ,&nbsp;J. Fischer ,&nbsp;V.R. Brown ,&nbsp;M. Glow ,&nbsp;B. Smith ,&nbsp;S. Cook ,&nbsp;K. Kohen ,&nbsp;S. Sherburne ,&nbsp;H. Smith ,&nbsp;B. Leland ,&nbsp;K.C. VerCauteren ,&nbsp;N.P. Snow","doi":"10.1016/j.prevetmed.2024.106365","DOIUrl":"10.1016/j.prevetmed.2024.106365","url":null,"abstract":"<div><div>Transboundary animal disease (TAD) introductions can have myriad economic, ecological, and societal impacts. When TADs are introduced into wild species, rapid and intense control efforts to reduce wild animal host populations are sometimes needed to eliminate the disease and prevent endemicity and spillover to domestic animal populations. Yet, such intensive efforts are non-trivial, and the rarity of TAD introductions means that personnel rarely have direct experience with these types of operations. Thus, explicit assessments of operational challenges for these kinds of efforts can provide direction to build emergency response preparedness capacity. Here, we simulated a TAD control effort in response to initial detection of a hypothetical index case of a TAD in wild pigs (<em>Sus scrofa</em>) (e.g., African swine fever; ASF). We used three removal methods (aerial control, trapping, and an experimental toxic bait). Then, we conducted an after-action assessment to identify operational challenges for rapidly reducing a population of invasive wild pigs within a simulated outbreak zone. We also simulated carcass recoveries of dispatched pigs, similar to what might be conducted during a response to a TAD with carcass-based transmission (e.g., ASF virus). Here, we describe operational challenges identified during our effort, alongside technological development solutions and <em>a priori</em> strategy needs to improve TAD response operation outcomes.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106365"},"PeriodicalIF":2.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The global prevalence of microsporidia infection in rabbits as a neglected public health concern: A systematic review and meta-analysis","authors":"Amir Abdoli ,&nbsp;Meysam Olfatifar ,&nbsp;Leila Zaki ,&nbsp;Ali Asghari ,&nbsp;Kareem Hatam-Nahavandi ,&nbsp;Oskar Nowak ,&nbsp;Majid Pirestani ,&nbsp;Daniel Diaz ,&nbsp;Mohammad Ghaffari Cherati ,&nbsp;Aida Vafae Eslahi ,&nbsp;Milad Badri ,&nbsp;Panagiotis Karanis","doi":"10.1016/j.prevetmed.2024.106380","DOIUrl":"10.1016/j.prevetmed.2024.106380","url":null,"abstract":"<div><div>Microsporidia are intracellular parasites with significant impact on both animal and human health. The prevalence of microsporidia infections in rabbits, including the genera <em>Enterocytozoon</em> and <em>Encephalitozoon</em>, underscores the importance of understanding their epidemiology for effective control strategies. This systematic review and meta-analysis estimated the global prevalence of microsporidia infection in rabbits using five databases (Scopus, PubMed, Embase, Web of Science, and Google Scholar) to retrieve articles published between 03 December 2003 and 26 March 2023. The global prevalence was estimated with a 95 % confidence interval. All statistical analyses conducted were based on meta-package of R (version 3.6.1). A <em>p</em>-value lower than 0.05 was interpreted as statistically significant. A total of 71 studies comprising 72 datasets were included, yielding a global pooled prevalence of microsporidia infections in rabbits at 0.312 (0.250–0.378). The prevalence varied significantly by continent with highest observed in North America (0.495, 0.151–0.842). Slovenia had the highest pooled prevalence (0.714, 0.654–0.773). <em>Encephalitozoon cuniculi</em> accounted for the highest prevalence (0.338, 0.271–0.407). The findings highlight the global distribution of microsporidia in rabbit populations, emphasizing the zoonotic potential and public health implications. The predominance of <em>E. cuniculi</em> underscores its importance as a widespread pathogen affecting both animal and human health. The data underscore the need for continued surveillance and monitoring, particularly in regions with high prevalence.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106380"},"PeriodicalIF":2.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142648596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economic assessment of animal disease burden in Senegalese small ruminants","authors":"Anne Meyer ,&nbsp;Bakary Ndiaye ,&nbsp;Andrew Larkins ,&nbsp;Gemma Chaters ,&nbsp;William Gilbert ,&nbsp;Benjamin Huntington ,&nbsp;Guy Ilboudo ,&nbsp;Michel Dione ,&nbsp;Wudu Temesgen Jemberu ,&nbsp;Mame Nahé Diouf ,&nbsp;Assane Gueye Fall ,&nbsp;Mathioro Fall ,&nbsp;Mbargou Lo ,&nbsp;Jonathan Rushton","doi":"10.1016/j.prevetmed.2024.106382","DOIUrl":"10.1016/j.prevetmed.2024.106382","url":null,"abstract":"<div><div>Small ruminant production in sub-Saharan Africa is limited by a range of constraints, including animal health issues. This study aimed at estimating the impact of these issues on the small ruminant production in Senegal in a holistic manner, using an approach developed by the Global Burden of Animal Diseases (GBADs) programme. The estimation focused on the mixed crop-livestock system, representing a large proportion (&gt;60 %) of the small ruminant population in the country. It was based on existing data collected via a systematic literature review, acquisition of secondary datasets from local stakeholders, and expert elicitation. A dynamic population model was used to calculate the gross margin of the sector under both the current health constraints and an ideal health state, where animals are not exposed to causes of morbidity and mortality. The difference between the current and ideal health scenarios, termed the Animal Health Loss Envelope (AHLE), provides a quantitative measure of the farm-level cost of disease in the system. The all-cause AHLE was estimated at 292 billion FCFA (468 million USD, with 95 % prediction interval 216 – 366 billion FCFA) per year for 2022, for a population of 8.8 million animals. The contribution of Peste des Petits Ruminants (PPR) was modelled separately, as an example of attributing part of the AHLE to a specific disease cause. PPR was estimated to contribute 5 % of the total AHLE. The animal disease burden experienced by Senegalese livestock keepers was largely due to loss in animals and production, with relatively small amounts of animal health expenditure. Implementation of this study contributed to the further development of the GBADs approach. Such estimates can support decision making at all levels, from investment decisions at the international level to local disease awareness campaigns targeting livestock keepers.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106382"},"PeriodicalIF":2.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142639608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of scenario tree models in support of animal health surveillance: A scoping review","authors":"Gary Delalay ,&nbsp;Dima Farra ,&nbsp;John Berezowski ,&nbsp;Maria Guelbenzu-Gonzalo ,&nbsp;Tanja Knific ,&nbsp;Xhelil Koleci ,&nbsp;Aurélien Madouasse ,&nbsp;Filipe Maximiano Sousa ,&nbsp;Eleftherios Meletis ,&nbsp;Victor Henrique Silva de Oliveira ,&nbsp;Inge Santman-Berends ,&nbsp;Francesca Scolamacchia ,&nbsp;Petter Hopp ,&nbsp;Luis Pedro Carmo","doi":"10.1016/j.prevetmed.2024.106371","DOIUrl":"10.1016/j.prevetmed.2024.106371","url":null,"abstract":"<div><h3>Background</h3><div>Scenario tree modelling is a well-known method used to evaluate the confidence of freedom from infection or to assess the sensitivity of a surveillance system in detecting an infection at a certain design prevalence. It facilitates the use of data from various sources and the inclusion of risk factors into calculations, while still obtaining quantitative estimates of surveillance sensitivity and probability of freedom.</div></div><div><h3>Objectives</h3><div>We conducted a scoping review to identify scenario tree models (STMs) applied to assess freedom from infection in veterinary medicine, characterize their use, parameterisation, reporting and potential limitations.</div></div><div><h3>Eligibility criteria</h3><div>We included published scientific articles and grey literature that were a) neither reviews nor expert opinions, b) aimed to assess freedom from infection, provided methods to assess it, or aimed to estimate the sensitivity of a surveillance program for early detection of an infection at a design prevalence, c) targeted infection in animals and d) used scenario tree modelling. The search covered documents published between January 2006 and August 2021.</div></div><div><h3>Design</h3><div>Several search methods were used to retrieve scientific articles and grey literature relevant to the subject. The search strategy included searching in scientific databases and/or grey literature repositories, contacting experts across the world that previously worked with STMs and retrieving citations from relevant reviews.</div></div><div><h3>Results and discussion</h3><div>Four hundred twenty-four distinct documents were retrieved with our search string. After screening, data was extracted from 99 documents representing 67 projects. Forty different animal diseases were modelled with STMs, the most represented being infections with tuberculous <em>Mycobacterium</em> sp., Avian Influenza A virus and <em>Brucella</em> sp. STMs were mostly used for diseases of cattle, swine and wild mammals. Results showed that STMs were used in a large variety of studies, are very versatile and were used in disparate frameworks. However, we also found that studies are not reported in a standardized way and often lack important information. This makes results hard to interpret, compare and reproduce. Additionally, we identified common assumptions and misconceptions, the most important ones regarding sensitivity and specificity, which could have an impact on the results of the studies using STMs.</div></div><div><h3>Conclusion</h3><div>We recommend the elaboration of internationally agreed guidelines about how to report results from STMs in a uniform manner. Such guidelines should include information on the study setting, procedures and analyses, but also on how the results could be interpreted concerning freedom from infection.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106371"},"PeriodicalIF":2.2,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Causes of abortion in Iranian goat herds and associated risk factors","authors":"Hossein Esmaeili ,&nbsp;Mohammadreza Ghorani ,&nbsp;Zeinab Hamidiya ,&nbsp;Seyed Mehdi Joghataei ,&nbsp;Sergio Villanueva-Saz ,&nbsp;Delia Lacasta","doi":"10.1016/j.prevetmed.2024.106381","DOIUrl":"10.1016/j.prevetmed.2024.106381","url":null,"abstract":"<div><div>Abortion imposes a substantial economic burden on the global small ruminant industry, not only reducing herd productivity but also contributing to the spread of zoonotic diseases. This study examines the primary factors associated with abortion, both infectious and non-infectious, in 623 goat herds across Iran. A comprehensive evaluation was performed, incorporating herd history, laboratory results, and statistical analyses using univariate tests and multivariable binary logistic regression. Key findings revealed significant associations with abortion, including previous abortion history, gestational age of the aborted foetus, routine veterinary visits, mineral supplementation, and vaccination practices. Non-infectious factors, such as pregnancy toxemia, goiter, and deficiencies in vitamin E/selenium, were identified in herds with a low abortion prevalence (&lt;10 %). Among the 623 herds studied, 277 (44.5 %) exhibited an abortion prevalence below 2 %, considered within normal limits, while the remaining 346 herds (55.5 %) experienced pathological abortion rates exceeding 2 %. The definitive cause of abortion was determined in 227 of the 346 abortion outbreaks analysed, accounting for 65.6 % of the cases. Infectious agents were identified in 40.7 % of the herds with abortion rates exceeding 2 %, with <em>Brucella melitensis</em> (9.5 %), <em>Chlamydia abortus</em> (7.8 %), and <em>Coxiella burnetii</em> (5.2 %) being the most prevalent pathogens. Multivariable binary logistic regression analysis revealed significant associations between abortion and several factors, including birth (OR=2.01, 95 % CI: 1.05–3.89, P=0.036), previous abortion history (OR=14.5, 95 % CI: 6.01–37.3, P&lt;0.001), gestational age of the aborted foetus (OR=3.07, 95 % CI: 1.63–5.89, P&lt;0.001), routine veterinary visits (OR=0.16, 95 % CI: 0.09–0.27, P&lt;0.001), vaccination (OR=0.25, 95 % CI: 0.11–0.53, P&lt;0.001), and mineral supplementation (OR=0.36, 95 % CI: 0.21–0.62, P&lt;0.001). These findings underscore the diverse causes of abortion in Iranian goat herds, emphasizing the need to improve farmer awareness and access to commercial vaccines targeting infectious abortion agents to enhance herd productivity.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106381"},"PeriodicalIF":2.2,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of dried blood spots for serological surveys of myxoma and rabbit hemorrhagic disease viruses in their wild reservoir","authors":"Joana Ferreira-e-Silva ,&nbsp;Saúl Jiménez-Ruiz ,&nbsp;Marisa Rodrigues ,&nbsp;Emídio Santos ,&nbsp;Sabrina Castro-Scholten ,&nbsp;Vitor Lizana ,&nbsp;Alba Martí-Marco ,&nbsp;Tereza Almeida ,&nbsp;Ana M. Lopes ,&nbsp;Joana Abrantes ,&nbsp;Juan Bárcena ,&nbsp;Esther Blanco ,&nbsp;Carlos Rouco ,&nbsp;Ignacio García-Bocanegra ,&nbsp;Paulo Célio Alves ,&nbsp;Nuno Santos","doi":"10.1016/j.prevetmed.2024.106369","DOIUrl":"10.1016/j.prevetmed.2024.106369","url":null,"abstract":"<div><div>Myxoma (MYXV) and rabbit hemorrhagic disease (RHDV) viruses are pathogens of economic relevance for cuniculture and conservation concern for wild European rabbits (<em>Oryctolagus cuniculus</em>), recently classified as ‘Endangered’ in its native range. Large-scale serological surveys, facilitated by sample collection using dried blood spots (DBS), allow monitoring seroprevalence in the wild reservoir but require evaluating the technique for the host and pathogen of interest. This study aimed to evaluate Protein Saver 903 DBS for MYXV and RHDV (genotype GI.2) serological surveys in European rabbits. Paired serum and DBS collected from 172 rabbits harvested or found dead in the Iberian Peninsula were tested for IgG antibodies specific against MYXV and RHDV GI.2 using indirect ELISA. We found an almost perfect agreement between serum and DBS for MYXV (Cohen's κ=0.914, CI₉₅ 0.847 – 0.981) and a strong agreement for RHDV GI.2 (Cohen's κ=0.808, CI₉₅=0.722 – 0.893). The diagnostic sensitivity of DBS was 95.4 % (CI₉₅ 90.3 – 97.9 %) for MYXV and 82.1 % (CI₉₅ 73.2 – 88.5 %) for RHDV GI.2. The diagnostic specificity and positive predictive value were 100 % for both pathogens. This study supports DBS as a suitable sampling strategy for serological surveys of antibodies specific to MYXV and RHDV GI.2 in European rabbits, which generally agrees with results from other hosts and pathogens where this technique was evaluated.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106369"},"PeriodicalIF":2.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geographic risk of classical swine fever in non-free regions in Brazil","authors":"Paulo Gomes do Nascimento Corrêa ,&nbsp;Pedro Ferreira de Sousa Júnior ,&nbsp;Francisco Alyson Silva Oliveira ,&nbsp;Glenda Lídice de Oliveira Cortez Marinho ,&nbsp;David Germano Gonçalves Schwarz","doi":"10.1016/j.prevetmed.2024.106368","DOIUrl":"10.1016/j.prevetmed.2024.106368","url":null,"abstract":"<div><div>Brazil is the fourth largest producer and exporter of pork in the world, standing out for its potential to increase pig production nationwide. Among the diseases that can severely compromise trade relations and cause significant losses in pig production in Brazil, Classical Swine Fever (CSF) is notable for being a highly contagious viral disease with high potential for spreading among domestic and wild pigs, wild boars, and peccaries. The present study aimed to identify high-risk regions for CSF in Brazil through spatial, temporal, and spatiotemporal analyses from 2000 to 2023. During this period, 3189 cases of CSF were detected, all reported exclusively in states within the CSF non-free zone. The Northeast region accounted for 90.31 % (2880/3189) of the total CSF cases, with Ceará reporting the highest number of cases at 1475 (46.25 %), of which 810 were reported in 2018 alone. The North region accounted for 9.69 % (309/3189) of the total cases, with the states of Pará and Amapá being the only ones to report cases of the disease. Temporal trend analysis identified an increase in Piauí (Annual Percentage Change [APC]: 25.58 %), Alagoas (APC: 28.01 %), and Ceará (APC: 17.99 %), a decreasing trend for Pernambuco (APC: 24.49 %), Paraíba (APC: 19.35 %), and Rio Grande do Norte (APC: 11.85 %), and stability in Maranhão (APC: 0.17 %), Pará (APC: 1.61 %), and Amapá (APC: 15.52 %). The spatiotemporal analysis identified the formation of two high-risk clusters: the primary cluster occurred in the Northeast region, specifically in the states of Ceará, Piauí, Rio Grande do Norte, Paraíba, Pernambuco, and Alagoas, between 2018 and 2019, with a total of 1556 CSF cases and Relative Risk (RRs) of 120.02. The secondary cluster was formed by the states of Rondônia, Acre, Amazônia, Roraima, Pará, Amapá, and Mato Grosso, located in the North and part of the Midwest region, for the year 2009, with a total of 309 cases and an RRs of 29.89. In conclusion, the Northeast region is considered high-risk for the emergence of new CSF cases, highlighting the states of Ceará and Piauí, which can be considered important sources of CSF virus spread to other Brazilian states, alerting authorities to the need for disease control actions.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106368"},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A network evaluation of human and animal movement data across multiple swine farm systems in North America","authors":"Tara Prezioso ,&nbsp;Alicia Boakes ,&nbsp;Jeff Wrathall ,&nbsp;W. Jonas Reger ,&nbsp;Suman Bhowmick ,&nbsp;Rebecca Lee Smith","doi":"10.1016/j.prevetmed.2024.106370","DOIUrl":"10.1016/j.prevetmed.2024.106370","url":null,"abstract":"<div><h3>Introduction</h3><div>The U.S. swine industry is vulnerable to the rapid spread of disease due to systemic structural issues. While animal movement networks are used to identify disease spread risks and design response plans, human movement between farms were rarely accounted for. Human movements, when integrated with animal movement models, create a different, more inclusive, and accurate network structure when compared to animal movements alone.</div></div><div><h3>Methods</h3><div>One year of propriety farm visit data was analyzed and consisted of anonymized property IDs, location, and user/truck IDs, along with visit dates, property, vehicle, and entry types from three swine management companies. A static directed network was created using the igraph package in R for all movements, with separate sub-networks for each entry type (animal, human, and subsets of vehicle types). Network statistics for each sub-network were compared.</div></div><div><h3>Results</h3><div>The full network included 455 properties, 11 property types, 9 vehicle types, 12 entry types, and 320001 edges (trips between properties). The longest path length was 10 in the animal movement network but decreased to 5 for the full and human movement network, while the average path length decreased from 3.2 to 2.2. Edge density increased from 0.03 to 0.09 for the human network and 0.1 for the full network. For all network properties examined, the full and human movement networks demonstrated higher connectivity than the animal network. A heavy right skew in the degree distributions indicates a 'hub' structure (scale-free-like network) and the shorter path lengths indicates a small-world network topology.</div></div><div><h3>Discussion</h3><div>The full network is very well connected, more so than expected based on animal movement alone. Hubs may indicate points of disease susceptibility and 'super-spreader' properties. The high connectivity shows that swine farm networks may be more susceptible to spread of an introduced disease than expected from previous analyses.</div></div><div><h3>Conclusions</h3><div>Monitoring human, as well as animal movement, provides for a more complete and accurate understanding of swine farm biosecurity risks.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106370"},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seroprevalence and associated risk factors of bovine herpesvirus 1 in smallholder dairy farms in two districts of Gondar zones, North-West Ethiopia","authors":"Tsegaye Asredie Kolech ,&nbsp;Yoseph Kerie Kebede ,&nbsp;Sefinew Alemu Mekonnen","doi":"10.1016/j.prevetmed.2024.106367","DOIUrl":"10.1016/j.prevetmed.2024.106367","url":null,"abstract":"<div><div>Bovine herpesvirus 1 (BoHV-1) is the infectious agent that causes infectious bovine rhinotracheitis (IBR), a disease affecting the reproductive and respiratory systems of cattle. Significant economic losses result from infectious bovine rhinotracheitis because of metritis, abortions, placenta retention, recurrent breeding, animal deaths, and losses from trade restrictions. Reports of the diseases have been made in southern, southwestern and in major cities that kept improved breed of dairy cows in Ethiopia with prevalence ranging from 28.5–67 %. However, there is insufficient information available regarding the frequency and spread of IBR in the northwest part of the nation. In northwest Ethiopia, a cross-sectional study was carried out to estimate seroprevalence of BoHV-1 and identify associated risk factors. Dairy farms and farm owners were chosen using a multistage cluster sampling technique, while dairy cattle were chosen using a simple random sample technique. Four hundred and thirty-one dairy cattle from 177 herds in the Debark and Lay-Armachiho districts in the North and Central Gondar zones, respectively, both in Northwestern Ethiopia, were selected to provide serum samples. Owners of dairy animals provided information via questionnaires. Using a competitive enzyme-linked immunosorbent assay (c-ELISA), anti-BoHV-1 antibodies were detected in serum samples. To identify risk factors, univariable and multivariable mixed effect logistic regression models were used. We calculated animal level and herd level seroprevalence of 72 % (95 % CI: 64.9–78.4 %) and 85.7 % (95 % CI: 79.8–90 %), respectively. Parity was associated with seroprevalence of BoHV-1; cows with higher parity had increased seroprevalence of BoHV-1. Bull mating [OR=3.13, (95 % CI: 1.74–5.64)] compared to AI and Debark district [OR=2.73 (95 % CI: 1.63–4.57)] compared to Lay-Armachiho district, were associated with seroprevalence of BoHV-1. The study had shown that BoHV-1 is circulating out of the major cities and also on dairy farms keeping local breeds of dairy cows in Gondar zones, North-West Ethiopia. This suggests need of attention in prevention and control of BoHV-1.</div></div>","PeriodicalId":20413,"journal":{"name":"Preventive veterinary medicine","volume":"234 ","pages":"Article 106367"},"PeriodicalIF":2.2,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}