tetano
Editor, Senior Moderator
Emerg Infect Dis. 2018 Jun;24(6):1020-1028. doi: 10.3201/eid2406.172102.
[h=1]Influenza D Virus Infection in Feral Swine Populations, United States.[/h] Ferguson L, Luo K, Olivier AK, Cunningham FL, Blackmon S, Hanson-Dorr K, Sun H, Baroch J, Lutman MW, Quade B, Epperson W, Webby R, DeLiberto TJ, Wan XF.
[h=3]Abstract[/h] Influenza D virus (IDV) has been identified in domestic cattle, swine, camelid, and small ruminant populations across North America, Europe, Asia, South America, and Africa. Our study investigated seroprevalence and transmissibility of IDV in feral swine. During 2012-2013, we evaluated feral swine populations in 4 US states; of 256 swine tested, 57 (19.1%) were IDV seropositive. Among 96 archived influenza A virus-seropositive feral swine samples collected from 16 US states during 2010-2013, 41 (42.7%) were IDV seropositive. Infection studies demonstrated that IDV-inoculated feral swine shed virus 3-5 days postinoculation and seroconverted at 21 days postinoculation; 50% of in-contact naive feral swine shed virus, seroconverted, or both. Immunohistochemical staining showed viral antigen within epithelial cells of the respiratory tract, including trachea, soft palate, and lungs. Our findings suggest that feral swine might serve an important role in the ecology of IDV.
[h=4]KEYWORDS:[/h] Orthomyxoviridae; United States; influenza A virus; influenza D virus; serology; swine influenza; viruses; zoonoses
PMID: 29774857 DOI: 10.3201/eid2406.172102
Free full text
[h=1]Influenza D Virus Infection in Feral Swine Populations, United States.[/h] Ferguson L, Luo K, Olivier AK, Cunningham FL, Blackmon S, Hanson-Dorr K, Sun H, Baroch J, Lutman MW, Quade B, Epperson W, Webby R, DeLiberto TJ, Wan XF.
[h=3]Abstract[/h] Influenza D virus (IDV) has been identified in domestic cattle, swine, camelid, and small ruminant populations across North America, Europe, Asia, South America, and Africa. Our study investigated seroprevalence and transmissibility of IDV in feral swine. During 2012-2013, we evaluated feral swine populations in 4 US states; of 256 swine tested, 57 (19.1%) were IDV seropositive. Among 96 archived influenza A virus-seropositive feral swine samples collected from 16 US states during 2010-2013, 41 (42.7%) were IDV seropositive. Infection studies demonstrated that IDV-inoculated feral swine shed virus 3-5 days postinoculation and seroconverted at 21 days postinoculation; 50% of in-contact naive feral swine shed virus, seroconverted, or both. Immunohistochemical staining showed viral antigen within epithelial cells of the respiratory tract, including trachea, soft palate, and lungs. Our findings suggest that feral swine might serve an important role in the ecology of IDV.
[h=4]KEYWORDS:[/h] Orthomyxoviridae; United States; influenza A virus; influenza D virus; serology; swine influenza; viruses; zoonoses
PMID: 29774857 DOI: 10.3201/eid2406.172102
Free full text