Journal of Wildlife Diseases最新文献

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Surveillance of Highly Pathogenic Avian Influenza in Wild Birds in France, 2016-22: What Did We Learn from Mortality Data? 2016-2022年法国野生鸟类高致病性禽流感监测:我们从死亡率数据中学到了什么?
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00056
Louison Blin, Clément Calenge, Anouk Decors, Nicolas Toulet, Emma Meloni, Anne Van De Wiele, Eva Faure, Thomas Rambaud, Eric Niqueux, Claire Guinat, Guillaume Le Loc'h, Loïc Palumbo
{"title":"Surveillance of Highly Pathogenic Avian Influenza in Wild Birds in France, 2016-22: What Did We Learn from Mortality Data?","authors":"Louison Blin, Clément Calenge, Anouk Decors, Nicolas Toulet, Emma Meloni, Anne Van De Wiele, Eva Faure, Thomas Rambaud, Eric Niqueux, Claire Guinat, Guillaume Le Loc'h, Loïc Palumbo","doi":"10.7589/JWD-D-25-00056","DOIUrl":"10.7589/JWD-D-25-00056","url":null,"abstract":"<p><p>Highly pathogenic avian influenza (HPAI) poses major conservation issues worldwide. In France, recurrent outbreaks of HPAI (H5) in wild birds have occurred since 2020, yet our understanding of the disease's dynamics have remained limited. By leveraging data from the national wildlife health surveillance network (SAGIR), we conducted a spatiotemporal analysis of the HPAI outbreaks in wild birds. Between 2016 and 2022, two different spatiotemporal patterns of the disease were observed in France: sporadic episodes of the virus in four episodes, forming either isolated cases or self-limited clusters at the maximum and epizootic circulation in 2022. During sporadic circulation episodes, observations were concentrated in well-defined spatiotemporal clusters with low prevalence. Those self-limited clusters, places where the density of positive events was substantially larger than in the rest of France, reflected three epidemiologic patterns: 1) recurrent clusters linked to migration and waterfowl habitats; 2) clusters involving synanthropic species in diverse areas and related to outbreaks in poultry farms; and 3) outbreaks in colonial bird species, observed once in 2020 and once in 2022, involving Red Knots (Calidris canutus) and Eurasian Griffon Vultures (Gyps fulvus), respectively. Beginning in summer 2022, the epizootic episode, characterized by a high prevalence along the northern French coasts, involved Northern Gannets (Morus bassanus) and Laridae. During this epizootic, cluster boundaries were far less well-defined. The ecology of the affected bird species and the characteristics of the circulating viral strains (often adapted to these species) may explain this new spatiotemporal dynamic compared with previously observed sporadic circulation, driven mainly through migration. Our study provides a better understanding of the dynamics of HPAI outbreaks in wild birds; nevertheless, knowledge gaps remain, and improved surveillance of HPAI in wild birds is still needed.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"295-310"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147317073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chlamydia spp., Bordetella bronchiseptica, and Phascolarctid Gammaherpesvirus 1 and 2 Infections in Koalas (Phascolarctos cinereus) in South East Queensland, Australia: Detection in Healthy Individuals and Those with Signs of Respiratory or Other Disease. 澳大利亚昆士兰州东南部考拉(Phascolarctos cinereus)中衣原体,支气管感染博德氏菌和Phascolarctos γ疱疹病毒1和2感染:在健康个体和有呼吸道或其他疾病迹象的个体中检测。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00125
Nina M Pollak, Samuel Phillips, Vasilli Kasimov, Harry Ling, Jessie S F Wong, Bernadette Rushton, Lily Russo, Amber Gillett, Ludovica Valenza, Jon Hanger, Julien Grosmaire, Sheri Smit, Deidre de Villiers, Amy Robbins, David McMillan, Peter Timms, Martina Jelocnik
{"title":"Chlamydia spp., Bordetella bronchiseptica, and Phascolarctid Gammaherpesvirus 1 and 2 Infections in Koalas (Phascolarctos cinereus) in South East Queensland, Australia: Detection in Healthy Individuals and Those with Signs of Respiratory or Other Disease.","authors":"Nina M Pollak, Samuel Phillips, Vasilli Kasimov, Harry Ling, Jessie S F Wong, Bernadette Rushton, Lily Russo, Amber Gillett, Ludovica Valenza, Jon Hanger, Julien Grosmaire, Sheri Smit, Deidre de Villiers, Amy Robbins, David McMillan, Peter Timms, Martina Jelocnik","doi":"10.7589/JWD-D-25-00125","DOIUrl":"10.7589/JWD-D-25-00125","url":null,"abstract":"<p><p>The decline in koala (Phascolarctos cinereus) populations has been significantly driven by infectious diseases, with chlamydial disease contributing to this trend. Chlamydia pecorum is often codetected with viruses such as phascolarctid gammaherpesvirus 1 and 2 (PhaHV-1 and PhaHV-2). Koalas can also be infected with other bacteria, including Bordetella bronchiseptica, which causes sporadic respiratory disease outbreaks. Respiratory infections and respiratory disease in koalas remain under-investigated. This study reports the detection of C. pecorum, Chlamydia pneumoniae, Chlamydia psittaci, B. bronchiseptica, PhaHV-1, and PhaHV-2 in 102 samples from 49 koalas that presented to veterinary facilities in South East Queensland, Australia from 2018 to 2023. The koalas included seemingly healthy individuals (n=21), koalas with respiratory disease (n=18), and koalas with other diseases (n=10). Overall, C. pecorum was detected in 37% of koalas, C. pneumoniae in 2%, C. psittaci in 0%, B. bronchiseptica in 18%, PhaHV-1 in 41%, and PhaHV-2 in 6%. Coinfections with three agents were common, particularly in koalas with signs of disease. Among the 18 koalas with respiratory disease, one was coinfected with four agents (B. bronchiseptica, C. pecorum, PhaHV-1, and PhaHV-2), and four were coinfected with three agents (B. bronchiseptica, C. pecorum, and PhaHV-1). Additionally, six koalas had coinfections involving two agents: two with C. pecorum and PhaHV-1, two with B. bronchiseptica and PhaHV-1, one with B. bronchiseptica and C. pecorum, and one with PhaHV-1 and PhaHV-2. Analysis of the genetic diversity of infecting chlamydial strains detected in koalas with respiratory and other diseases, based on the full-length ompA gene, identified previously characterized C. pecorum and C. pneumoniae ompA genotypes, as well as a unique C. pecorum ompA genotype. This study highlights the need for incorporating these infectious agents into koala respiratory diagnostics and emphasizes the need for continued research to investigate the complexities of these infections.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"269-281"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146119430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intraneuronal Parvoviral Infection in the Lateral Geniculate Nucleus of a Juvenile Bobcat (Lynx rufus). 幼年山猫膝状外侧核的神经内细小病毒感染。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00165
Darian L Giannino, Elizabeth Signore, Madeline Vile, Eman Anis, Dhani Prakoso, Kevin D Niedringhaus
{"title":"Intraneuronal Parvoviral Infection in the Lateral Geniculate Nucleus of a Juvenile Bobcat (Lynx rufus).","authors":"Darian L Giannino, Elizabeth Signore, Madeline Vile, Eman Anis, Dhani Prakoso, Kevin D Niedringhaus","doi":"10.7589/JWD-D-25-00165","DOIUrl":"10.7589/JWD-D-25-00165","url":null,"abstract":"<p><p>Necropsy and histopathology of a juvenile bobcat (Lynx rufus) revealed neuronal necrosis with nuclear inclusion bodies and vacuolation and immunolabeling with parvovirus immunohistochemistry. Infection with canine parvovirus was confirmed by PCR. This brain lesion is an uncommon manifestation of parvovirus in non-neonatal animals and is particularly rare in wild felids.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"526-528"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146093369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection and Characterization of a Novel Porcine Teschovirus in Wild Boars (Sus scrofa) in France. 在法国野猪(Sus scrofa)中检测和鉴定一种新型猪Teschovirus。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00110
Julien Hirschinger, Guillaume Le Loc'h, Cécile Caubet, Maxime Fusade-Boyer, Eva Faure, Malory Randon, Damien Dubosc, Freddy Talarico, Christine Saint-Andrieux, Mouna Abed-Zahar, Ariane Payne, Anouk Decors
{"title":"Detection and Characterization of a Novel Porcine Teschovirus in Wild Boars (Sus scrofa) in France.","authors":"Julien Hirschinger, Guillaume Le Loc'h, Cécile Caubet, Maxime Fusade-Boyer, Eva Faure, Malory Randon, Damien Dubosc, Freddy Talarico, Christine Saint-Andrieux, Mouna Abed-Zahar, Ariane Payne, Anouk Decors","doi":"10.7589/JWD-D-25-00110","DOIUrl":"10.7589/JWD-D-25-00110","url":null,"abstract":"<p><p>Porcine teschoviruses (PTV) are enteric pathogens affecting suids. Although ubiquitous in healthy domestic pig (Sus scrofa domesticus) populations, some virulent strains can cause severe neurological disorders known as Teschen-Talfan disease. Wild boars (Sus scrofa) can host PTV, but little is known about their epidemiological role in the dynamic of the pathogens. Until recently, PTV had not been reported in wild boars in France. However, in 2019 and 2020, serological evidence of PTV infection was detected in hunted wild boars from Drôme and Marne, some of which exhibited neurological and reproductive disorders. As a result, a combined serological, virological, and phylogenic screening was implemented. Results revealed high seroprevalence rates, up to 38%, suggesting endemic circulation of PTV in these populations. Genetic sequencing of PCR-positive samples suggests the presence of a novel PTV genotype. These findings raise questions about the pathogenicity of this new PTV strain as well as of the potential role of wild boars in the epidemiology of PTV in France, and highlight the need for further investigation into the interactions between domestic pigs and wild boar and the dynamics of the spread of PTV between them.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"431-438"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146180758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Invasive Rodents as a Source of Astroviruses in Réunion Harriers (Circus maillardi). 侵入性啮齿类动物是rsamunion Harriers (Circus maillardi)中星状病毒的来源。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00171
Camille Lebarbenchon, Pierrick Ferret, Damien Chiron, Céline Toty, Steve Augiron
{"title":"Invasive Rodents as a Source of Astroviruses in Réunion Harriers (Circus maillardi).","authors":"Camille Lebarbenchon, Pierrick Ferret, Damien Chiron, Céline Toty, Steve Augiron","doi":"10.7589/JWD-D-25-00171","DOIUrl":"https://doi.org/10.7589/JWD-D-25-00171","url":null,"abstract":"<p><p>Astroviruses (AstVs) are RNA viruses infecting a wide range of vertebrates, with increasing evidence of cross-species transmission. We investigated the presence of AstVs in the Réunion Harrier (Circus maillardi), a critically endangered raptor endemic to Réunion Island. Cloacal and oropharyngeal swabs were collected from 133 individuals sampled between 2015 and 2024. Reverse transcription and seminested conventional PCR was used to detect the AstV RNA-dependent RNA polymerase gene. In total, 5.3±3.8% of birds tested positive, with no significant association with age, sex, or sampling method. All positive samples were obtained from wild-caught individuals except one detected from a bird at the care center. Phylogenetic analysis revealed that all sequences were genetically related to rodent-associated AstVs previously detected on Réunion Island and in Madagascar, and they did not cluster with avian lineages. These findings are consistent with previous results in the endemic Réunion free-tailed bat (Mormopterus francoismoutoui). For Réunion Harriers, they further suggest recurrent exposure to nonnative rodent-associated viruses through predation. The pathogenic potential of such viruses in wildlife remains unknown, but it could be amplified in insular species lacking prior exposure or coevolutionary history. Our results support the need to better integrate wildlife disease surveillance into island conservation strategies.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":"62 2","pages":"503-508"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147654438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Establishment of Reference Intervals for Serum Amyloid A and Haptoglobin in Free-Ranging Barren-Ground Caribou (Rangifer tarandus granti), and Herd Health Implications. 自由放养的贫瘠地驯鹿(Rangifer tarandus granti)血清淀粉样蛋白A和触珠蛋白参考区间的建立及其对牛群健康的影响。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00078
Emma R Rovani-Rhoades, Craig S McConnel, Kimberlee B Beckmen, Carolyn Cray, Lindsey M Dreese
{"title":"Establishment of Reference Intervals for Serum Amyloid A and Haptoglobin in Free-Ranging Barren-Ground Caribou (Rangifer tarandus granti), and Herd Health Implications.","authors":"Emma R Rovani-Rhoades, Craig S McConnel, Kimberlee B Beckmen, Carolyn Cray, Lindsey M Dreese","doi":"10.7589/JWD-D-25-00078","DOIUrl":"https://doi.org/10.7589/JWD-D-25-00078","url":null,"abstract":"<p><p>Barren-ground caribou of the subspecies Rangifer tarandus granti are distributed throughout Alaska, USA, and the Yukon, Canada. The acute phase response is an innate immune response activated due to inflammatory stimulus, resulting in changing levels of acute phase proteins, including haptoglobin (Hp) and serum amyloid A (SAA). Haptoglobin and SAA are used as indicators of inflammation in domestic species, with several studies demonstrating their use in wildlife. In this study, banked serum samples from apparently clinically normal free-ranging barren-ground caribou (reference group) were used to establish reference intervals (RI) for Hp and SAA in caribou. These RIs were compared with additional samples from a declining herd with ongoing Brucella suis biovar 4 transmission. The RIs for Hp and SAA with 90% upper confidence intervals were 0.12-1.03 (0.08-1.27) mg/mL and 0.10-18.44 (0.10-31.00) mg/L, respectively. The SAA levels in the declining herd were found to be significantly elevated from the reference group (P=0.009), whereas no difference was found in Hp levels between the two herds (P=0.389). Meanwhile, SAA and Hp levels in animals with B. suis biovar 4 titers ≥1:80 were significantly elevated from the reference group (SAA P<0.001; Hp P=0.178). The results of our study indicate that SAA and Hp hold promise in monitoring the overall herd health of caribou in Alaska.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":"62 2","pages":"349-359"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147654466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Disease Investigation in Norwegian Killer Whales (Orcinus orca): Challenges and Needs for Improving Free-Living Cetacean Health Assessments. 挪威虎鲸(Orcinus orca)的疾病调查:改善自由生活鲸类健康评估的挑战和需求。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00055
Helena Costa, Audun H Rikardsen, Marie-Anne Blanchet, Eve Jourdain, Courtney A Waugh, Pierre Blévin
{"title":"Disease Investigation in Norwegian Killer Whales (Orcinus orca): Challenges and Needs for Improving Free-Living Cetacean Health Assessments.","authors":"Helena Costa, Audun H Rikardsen, Marie-Anne Blanchet, Eve Jourdain, Courtney A Waugh, Pierre Blévin","doi":"10.7589/JWD-D-25-00055","DOIUrl":"10.7589/JWD-D-25-00055","url":null,"abstract":"<p><p>Knowledge of the occurrence and etiology of cetacean diseases remains limited in northern areas, including in the Arctic and sub-Arctic. In November 2023, three killer whales (Orcinus orca) were observed in northern Norway exhibiting abnormal behavior, including inability to swim upright, loss of directional control, short and shallow dives, and lethargy. These unusual cases occurred within a 2-wk period and in the same area, suggesting a common underlying condition. However, due to the lack of diagnostic biologic samples, the cause of disease remains speculative. Herein, we discuss possible differential diagnoses based on the available data, including infectious disease, exposure to biotoxins, and blast trauma. Disease in live free-swimming killer whales in Norway has not been documented previously. These cases illustrate the significant challenges of investigating disease in wild, live cetaceans and emphasize the urgent need for improved surveillance, field diagnostic tools, and response protocols. Suggested developments include the implementation of ready-to-use kits for blow, fecal, and environmental DNA sampling; drones equipped with sampling devices and thermal sensors; and mobile laboratories to support on-site diagnostics. Collectively, these tools could significantly improve early detection, investigation, and management of similar unusual events in wild cetacean populations.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"452-458"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145863370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Subaortic Stenosis in Four Free-Ranging Eurasian Lynx (Lynx lynx) from the Alpine and Jura Populations in Switzerland. 来自瑞士阿尔卑斯和汝拉种群的4只自由放养的欧亚猞猁的主动脉下狭窄。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00159
Yael Langenegger, Isabelle Wethli, Michelle Imlau, Mirjam Pewsner, Pavel Kvapil, Tony Glaus, Iris A Marti
{"title":"Subaortic Stenosis in Four Free-Ranging Eurasian Lynx (Lynx lynx) from the Alpine and Jura Populations in Switzerland.","authors":"Yael Langenegger, Isabelle Wethli, Michelle Imlau, Mirjam Pewsner, Pavel Kvapil, Tony Glaus, Iris A Marti","doi":"10.7589/JWD-D-25-00159","DOIUrl":"10.7589/JWD-D-25-00159","url":null,"abstract":"<p><p>As part of wildlife conservation efforts, the reintroduced Eurasian lynx (Lynx lynx) populations in Switzerland are the subject of ongoing health surveillance. Cardiac pathologies, such as heart murmurs and histopathologic changes in the cardiac tissue, including intramural cardiac vessels, are frequently observed. Here we describe four cases of subaortic stenosis (SAS), a congenital heart disease rarely reported in felids, in free-ranging adult male lynx from Switzerland. The affected lynx presented macroscopically with grades 1 to 3 of SAS. Histopathology confirmed characteristic subvalvular fibrous tissue as well as myocardial fibrosis and arteriosclerosis. Clinical data for one lynx, including the documentation of a systolic heart murmur, provide further case-specific insights. Our findings suggest that SAS might be linked to the recurrently noted cardiac pathologies and could be associated with the low genetic variability of lynx in Switzerland. This highlights the importance of integrating health and genetic data into conservation strategies to preserve healthy, viable wildlife populations.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"489-496"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147474062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pathology and Tissue Distribution of Highly Pathogenic Avian Influenza Virus Clade 2.3.4.4b in Free-Ranging Mountain Lions (Puma concolor) and Bobcats (Lynx rufus) from Colorado, USA. 高致病性禽流感病毒进化枝2.3.4.4b在美国科罗拉多州自由放养的美洲狮和山猫中的病理和组织分布
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00106
Michelle Degnin, Laura Ashton, Mia Kim Torchetti, Macallister Harris, Kevin Blecha, Kristy Pabilonia, Karen A Fox
{"title":"Pathology and Tissue Distribution of Highly Pathogenic Avian Influenza Virus Clade 2.3.4.4b in Free-Ranging Mountain Lions (Puma concolor) and Bobcats (Lynx rufus) from Colorado, USA.","authors":"Michelle Degnin, Laura Ashton, Mia Kim Torchetti, Macallister Harris, Kevin Blecha, Kristy Pabilonia, Karen A Fox","doi":"10.7589/JWD-D-25-00106","DOIUrl":"https://doi.org/10.7589/JWD-D-25-00106","url":null,"abstract":"<p><p>During a 1-mo period in early 2023, four adult free-ranging mountain lions (Puma concolor) and two adult free-ranging bobcats (Lynx rufus) died or were euthanized during an outbreak of H5N1 highly pathogenic avian influenza virus (HPAIV) in Colorado, USA. All six animals tested positive for HPAIV clade 2.3.4.4b, and necropsy findings resembled those described by others for domestic cats and wild felids infected with HPAIV clade 2.3.4.4b in North America. The most consistent findings in the Colorado wild felids were necrotizing and lymphoplasmacytic meningoencephalitis (6/6) and interstitial to bronchointerstitial pneumonia (3/6). Necrotizing lesions were also identified in other tissues, including liver (3/6) and adrenal gland (2/4). Immunohistochemistry demonstrated localization of influenza A-specific antibody to necrotizing lesions. Sequencing of the HPAIV PB2 gene did not reveal mutations to suggest mammalian adaptation, and resolution of the outbreak in wild felids coincided with a decline in cases in wild birds. The presumed mechanism of transmission to wild felids was exposure at the time of ingestion of infected avian carcasses. Immunohistochemistry of tongue, pinna, and skeletal muscle did not indicate utility of these samples for noninvasive sampling of hunter-harvested carcasses for HPAI surveillance. We recommend testing brain tissue for HPAIV surveillance in wild felids.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":"62 2","pages":"370-379"},"PeriodicalIF":1.2,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147645633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevalence of Leprosy-Causing Bacteria in Mexican Long-Nosed Armadillos (Dasypus mexicanus) in Alabama, USA. 美国阿拉巴马州墨西哥长鼻犰狳(Dasypus mexicanus)中麻风致病菌的流行情况。
IF 1.2 4区 农林科学
Journal of Wildlife Diseases Pub Date : 2026-04-08 DOI: 10.7589/JWD-D-25-00077
Olivia F Sciandra, Wesley M Anderson, Sarah Zohdy, Kelly H Dunning
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