Comparative study of pandemic (H1N1) 2009, swine H1N1, and avian H3N2 influenza viral infections in quails     

Aunyaratana Thontiravong  Suwarak Wannaratana  Rachod Tantilertcharoen  Duangduean Prakairungnamthip  Ranida Tuanudom  Jiroj Sasipreeyajan  Somsak Pakpinyo  Alongkorn Amonsin  Pravina Kitikoon  Kanisak Oraveerakul 《Journal of veterinary science (Suw?n-si, Korea)》2012,13(4):395-403

Quail has been proposed to be an intermediate host of influenza A viruses. However, information on the susceptibility and pathogenicity of pandemic H1N1 2009 (pH1N1) and swine influenza viruses in quails is limited. In this study, the pathogenicity, virus shedding, and transmission characteristics of pH1N1, swine H1N1 (swH1N1), and avian H3N2 (dkH3N2) influenza viruses in quails was examined. Three groups of 15 quails were inoculated with each virus and evaluated for clinical signs, virus shedding and transmission, pathological changes, and serological responses. None of the 75 inoculated (n = 45), contact exposed (n = 15), or negative control (n = 15) quails developed any clinical signs. In contrast to the low virus shedding titers observed from the swH1N1-inoculated quails, birds inoculated with dkH3N2 and pH1N1 shed relatively high titers of virus predominantly from the respiratory tract until 5 and 7 DPI, respectively, that were rarely transmitted to the contact quails. Gross and histopathological lesions were observed in the respiratory and intestinal tracts of quail inoculated with either pH1N1 or dkH3N2, indicating that these viruses were more pathogenic than swH1N1. Sero-conversions were detected 7 DPI in two out of five pH1N1-inoculated quails, three out of five quails inoculated with swH1N1, and four out of five swH1N1-infected contact birds. Taken together, this study demonstrated that quails were more susceptible to infection with pH1N1 and dkH3N2 than swH1N1.  相似文献   

Evidence of pandemic H1N1 influenza exposure in dogs and cats,Thailand: A serological survey     

Ratanaporn Tangwangvivat  Sunicha Chanvatik  Kamonpan Charoenkul  Supassama Chaiyawong  Taveesak Janethanakit  Ranida Tuanudom  Duangduean Prakairungnamthip  Supanat Boonyapisitsopa  Napawan Bunpapong  Alongkorn Amonsin 《Zoonoses and public health》2019,66(3):349-353

Influenza A virus causes respiratory disease in both humans and animals. In this study, a survey of influenza A antibodies in domestic dogs and cats was conducted in 47 animal shelters in 19 provinces of Thailand from September 2011 to September 2014. One thousand and eleven serum samples were collected from 932 dogs and 79 cats. Serum samples were tested for influenza A antibodies using a multi‐species competitive NP‐ELISA and haemagglutination inhibition (HI) assay. The NP‐ELISA results showed that 0.97% (9/932) of dogs were positive, but all cat samples were negative. The HI test against pandemic H1N1, human H3N2 and canine H3N2 showed that 0.64% (6/932) and 1.20% (1/79) of dogs and cats were positive, respectively. It is noted that all six serum samples (5 dogs and 1 cat) had antibodies against pandemic H1N1. In summary, a serological survey revealed the evidence of pandemic H1N1 influenza exposure in both dogs and cats in the shelters in Thailand.  相似文献