| Miêu tả |
Vietnam was among the first countries to report cases of HPAI at the start of the current panzootic. At the peak of the epidemic in Vietnam, 24 percent of communes and 60 percent of towns were affected, and by March 2004 about 17 percent of the poultry population had died or been culled, amounting to about 45 million birds. This initial wave was followed by two less severe outbreaks, in late-2004/early-2005 and in August 2005. A national poultry vaccination program was undertaken from October 2005 to January 2006 in all 64 provinces covering 170 million chickens and 79 million ducks and is beginning its third round. No new outbreaks of HPAI in poultry have been reported since December 2005.
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