Since 2013, the H7N9 avian influenza A virus (AIV) has caused human infections and to the extent of now surpassing H5N1.
Avian influenza A(H9N2) virus isolated from a poultry worker in Pakistan in 2015 was closely related to viruses detected in poultry farms. Observed mutations in the hemagglutinin related to receptor-binding affinity and antigenicity could affect cross-reactivity with pre-pandemic H9N2 vaccine strains.
Researchers compared the detection frequency of avian influenza H7 subtypes at live poultry markets in Guangdong Province, China, before and after the introduction of a bivalent H5/H7 vaccine in poultry. The vaccine was associated with a 92 percent reduction in H7 positivity rates among poultry and a 98 percent reduction in human H7N9 cases.
The Center for Health Protection (CHP) on November 23 received notification of an additional human case of avian influenza A(H5N6) in Jiangsu from the National Health Commission. The case involved a 10-year-old girl from Suzhou.
Macau health authorities warned residents to take precautions after a fatal bird flu case was registered in the nearby Guangxi Zhuang Autonomous Region.
The Center for Health Protection (CHP) on September 30 received notification of an additional human case of avian influenza A(H5N6) in Guangdong from the National Health Commission.
The substantial increase in prevalence and emergence of antigenically divergent or highly pathogenic influenza A(H7N9) viruses during 2016–17 raises concerns about the epizootic potential of these viruses.
The Center for Health Protection (CHP) received notification of an additional human case of avian influenza A(H5N6) in Guangxi from the National Health Commission.
An 82-year-old woman from Vietnam's southern Tra Vinh province has died from H1N1 infection, becoming the second H1N1 death in the province so far this year.
H5N1 was detected in the post-mortem blood tests of a 60-year-old victim who died Thursday, August 9, in Ho Chi Minh City.