Reassortment is when two or more influenza virus strains infect a single host and then swap segments of their genetic material with each other. The more birds get infected with the H5N1 or N5N9 ...

Different blends of those two proteins alongside many other mutations elsewhere in the virus can affect how sick people and animals get and how it spreads. H5N1 has been the dominant grouping of ...

The combination of these proteins defines the virus subtype, such as H5N1 or H5N9. There are nine known subtypes of A(H5) viruses - A(H5N1), A(H5N2), A(H5N3), A(H5N4), A(H5N5), A(H5N6), A(H5N7), A ...

Why a teenager’s bird-flu infection is ringing alarm bells for scientists Although many of the infections have been mild, emerging data indicate that variants of the avian influenza virus H5N1 ...

Cats are particularly susceptible to the virus. This post was updated because an earlier version contained inaccurate information. According to state health officials, the H5N1 virus has not been ...

Here's what you need to know about the highly pathogenic H5N1 avian influenza, and what bird flu might mean to you, your chickens and pets. Bird flu is an influenza A virus that causes respiratory ...

When the H5N1 bird flu virus jumps from animals into people, it hits a dead end. Missing the key genes that would help it infect humans, it isn’t causing a pandemic. But if the virus suddenly ...

USDA’s Food Safety and Inspection Service (FSIS) announced Friday that the H5N1 virus was discovered in meat from a single cull dairy cow as part of testing of 96 dairy cows. APHIS said the meat ...

"In this case, the H5 in the H5N9 was the H5 from the currently circulating H5N1 bird flu that is more pathogenic." "While H5N9 is not generally a very dangerous virus, we need to keep an eye on ...

Samples from each of Minnesota's 1,625 permitted dairy farms will undergo testing once a month for H5N1, the virus commonly known as bird flu. (Elizabeth Flores/The Minnesota Star Tribune) ...

Both the more prevalent H5N1 and the rarer H5N9 strains need to gain some key mutations in order to efficiently spread among humans. “The seasonal, human H1N1 virus has an NA protein that is ...

A report by LA Times reveals that the new strain is a combination of the H5N1 strain that has been widely detected across the world and likely a “low-pathogenic” bird flu virus. Moreover ...