Transmission of pandemic influenza H1N1 (2009) in Vietnamese swine in 2009-2010

Transmission of pandemic influenza H1N1 (2009) in Vietnamese swine in 2009–2010

BACKGROUND The pandemic of 2009 was caused by an H1N1 (H1N1pdm) virus of swine origin. This pandemic virus has repeatedly infected swine through reverse zoonosis, although the extent of such infection in swine remains unclear. OBJECTIVE This study targets small and commercial pig producers in North Vietnam, in order to estimate the extent of H1N1pdm infection in swine and to identify the risk...

Pandemic influenza (H1N1) 2009 (swine flu).

Pandemic (H1N1) 2009 influenza.

On 11 June 2009, the World Health Organization declared the first human influenza pandemic since 1968–1969. The responsible virus, pandemic (H1N1) 2009 influenza, is a novel triple-reassortant influenza A virus, incorporating avian, swine and human influenza genes.1 The virus is resistant to the anti-influenza medications, amantadine and rimantadine, but is generally sensitive to the neuraminid...

Worldwide transmission and seasonal variation of pandemic influenza A(H1N1)2009 virus activity during the 2009–2010 pandemic

BACKGROUND Seasonal influenza activity varies with geography and time of year. OBJECTIVE To describe how pandemic influenza A(H1N1)2009 [A(H1N1)pdm09] activity varied during the 2009-2010 pandemic. METHODS We analyzed influenza virological data compiled by the World Health Organization from June 2009-August 2010. We calculated weekly proportions of A(H1N1)pdm09-positive specimens out of all...

Transmission of influenza A(H1N1) 2009 pandemic viruses in Australian swine

BACKGROUND Swine have receptors for both human and avian influenza viruses and are a natural host for influenza A viruses. The 2009 influenza A(H1N1) pandemic (H1N1pdm) virus that was derived from avian, human and swine influenza viruses has infected pigs in various countries. OBJECTIVES To investigate the relationship between the H1N1pdm viruses isolated from piggery outbreaks in Australia a...