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To attenuate and control the spread of infectious disease, a body of research has been conducted to generate safe vaccines and to continue national-level surveillance. However, understanding on viability and persistence of avian influenza virus (AIV) in infected carcasses, and effective disposal approaches are still limited up to date. Here, using HA test and RT-PCR, we assessed active status of AIV and degradation of viral RNA in collected specimens at different sites and time points. First, AIV infectivity was recovered until day 2, and viral nucleic acids persisted to day 14 and 21 in inorganic and organic samples, respectively, in sealed vials incubated at room temperature. Second, AIV was totally inactivated in all examined specimens, and viral RNA was not detectable at all time points tested at least one month post-infection in AIV-inoculated carcasses buried directly in soil or fiber reinforced plastic (FRP) bin. Lastly, among different burial sites in South Korea, 6 out of 17 sampling sites in Jeonbuk province showed the presence of viral genetic materials, while the rest of the field samples displayed neither the presence of infective AIV nor detectable viral RNA. This study showed a linear relation between time and degradation degree of viral RNA in buried samples suggesting that burial disposal method is effective for the control or at least attenuation of spread of AI infection in infected animals although consistent monitoring is required to verify safety of disposal.
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참고문헌 (21)
참고문헌 신청
Abdel-Moneim AS / 2012 / Isolation and mutation trend analysis of influenza a virus subtype H9N2 in Egypt / Virology J 9:173
Brown JD / 2008 / Avian influenza virus in water: infectivity is dependent on pH, salinity and temperature / Vet Microbiol 136:20~26
Chatziprodromidou IP / 2018 / Global avian influenza outbreaks 2010–2016: a systematic review of their distribution, avian species and virus subtype / Syst Rev 7:17
Erickson LE / 2004 / Carcass disposal: a comprehensive review, the national agricultural security center consortium USDA APHIS cooperative agreement project: carcass disposal working group
Fereidouni SR / 2009 / Rapid molecular subtyping by reverse transcription polymerase chain reaction of the neuraminidase gene of avian influenza a viruses / Vet Microbiol 135:253~260
Brown JD / 2008 / Avian influenza virus in water: infectivity is dependent on pH, salinity and temperature / Vet Microbiol 136:20~26
Chatziprodromidou IP / 2018 / Global avian influenza outbreaks 2010–2016: a systematic review of their distribution, avian species and virus subtype / Syst Rev 7:17
Erickson LE / 2004 / Carcass disposal: a comprehensive review, the national agricultural security center consortium USDA APHIS cooperative agreement project: carcass disposal working group
Fereidouni SR / 2009 / Rapid molecular subtyping by reverse transcription polymerase chain reaction of the neuraminidase gene of avian influenza a viruses / Vet Microbiol 135:253~260
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