In the US, outbreaks in multiple states affect chicken, turkey, and duck farms, including a farm housing 2.6 million egg-laying chickens in Ohio.
In 2022, the EU backed a plan to introduce vaccination in poultry, starting with France, which began the practice this fall.
The latest outbreaks range from Arkansas broiler farms to a California duck producer.
In November alone, outbreaks have led to the loss of about 7.6 million more poultry.
Of six cases reported from Cambodia this year, four were fatal.
The outbreak in Georgia is its first at a commercial farm since H5N1 began spreading in US poultry.
Cambodia has now reported six H5N1 cases this year.
The latest H9N2 case in China is the country's fifth in the last 6 months.
RSV hospitalizations are now rising in seniors, and only 14.3% have received the new vaccine.
Health officials are releasing 77,000 more doses, with supply stretched by higher-than-expected demand for the new tool for protecting newborns.