Avian Influenza

The role of wild birds in the transmission of the highly pathogenic (HPAI) strain of the H5N1 avian influenza virus currently remains unclear. The primary mode of H5N1 spread in Asia appears to be in the poultry trade, but migratory wild birds are...
There are no documented cases of humans contracting highly pathogenic avian influenza (HPAI) H5N1 from wild birds. Close contact with infected domestic poultry has been the primary way that people have become infected with the H5N1 virus.There are a few...
The highly pathogenic (HPAI) H5N1 strain of avian influenza has not been detected in the United States or anywhere in North America. Low pathogenic (low probability of creating disease) strains of avian influenza, however, are commonly present in...
Yes. In May 2005, highly pathogenic avian influenza (HPAI) H5N1 was detected for the first time in wild birds at Lake Qinghai, in China, where bar-headed geese (Anser indicus) died. This marked the first time since 1961 in which large numbers of wild...
Although H5N1 does not usually infect humans, nearly 600 cases of human cases of H5N1 have been reported from 15 countries since 2003.Most human cases of “highly pathogenic“ H5N1 virus infection have occurred in people who had recent contact with sick or...
There are no documented cases of wild birds directly transmitting avian influenza to people, and there is no indication that waterfowl or other wild birds hunted in the United States carry highly pathogenic avian influenza (HPAI) H5N1. While experts...
Pandemicflu.govUSGS National Wildlife Health CenterUSGS Alaska Science CenterUS Department of AgricultureCenters For Disease Control 
The designation of low pathogenic avian influenza (LPAI) or highly pathogenic avian influenza (HPAI) refers to the potential for these viruses produce disease. The designation of “low pathogenic” or “highly pathogenic” does not refer to how infectious...
Bird migration is only one possible route of introduction of highly pathogenic avian influenza (HPAI) strain H5N1 into North America.Illegal smuggling of birds and poultry products, travel by infected people or people traveling with virus-contaminated...
Avian influenza viruses have mostly been detected in wild waterfowl (ducks, geese, and swans) and shorebirds (wading birds), gulls, and terns.With few exceptions, the thousands of flu strains found in wild birds have been low pathogenic avian influenza (...