The CDC is now calling for subtyping of influenza A viruses in all hospitalized patients -- and on an accelerated timeline, ideally within 24 hours. Nirav Shah, MD, JD, principal deputy director of the CDC,

The US Centers for Disease Control and Prevention is urging hospitals to accelerate advanced testing of people they suspect may have bird flu.

The Centers for Disease Control and Prevention are monitoring the bird flu situation in the United States. Here's what to know and how to stay safe.

The CDC announced on Thursday its recommendation to test hospitalized influenza A patients more quickly and thoroughly to distinguish between seasonal flu and bird flu.

The H5N1 virus has mutated meaning it has begun to adapt to infect humans better raising new questions about H5N1's pandemic potential.

H5N1 bird flu hits Georgia’s poultry industry marking the first commercial outbreak in the state Learn CDC prevention tips to protect public health and livelihoods

CDC officials say they extended the guidance now because they are seeing more H5N1 patients whose illness they cannot track back to an infected bird or cow.

Highly infectious H5N1 virus, also known as the bird flu virus has tightened its grip on the United States. For the first time, Highly Pathogenic Avian Influenza (HPAI), has been detected in a commercial poultry flock in Georgia.

The CDC and MDH are advising health care providers to order further laboratory testing on positive influenza A specimens taken from hospitalized patients. The additional testing, known as subtyping, identifies which strain of influenza A is present.

H5N1 first human death was reported in USA. Since then, health authorities have been monitoring and cases and shave sounded alarm regarding its mutation rate.

To learn more about the recent bird flu outbreaks, we spoke with Asha Shah, MD, director of infectious diseases and epidemiologist at Stamford Hospital.

"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers wrote.