Analysis of information sources in references of the Wikipedia article "Cúm lợn" in Vietnamese language version.
|website=
(trợ giúp)|website=
(trợ giúp)[liên kết hỏng]Influenza B and C viruses are almost exclusively isolated from man, although influenza C virus has also been isolated from pigs and influenza B has recently been isolated from seals.
|website=
(trợ giúp)|website=
(trợ giúp)