The flu virus is changing in ways never seen before, ... Scientists attribute this spike to influenza A’s newly observed ability to modify its structure in response to environmental conditions, ...

Flu viruses package essential functions into a small integral membrane protein known as M2. ... T. Flu BM2 structure and function. Nat Struct Mol Biol 16, 1207–1209 (2009) . https://doi ...

A long-lasting formulation of an antiviral drug greatly reduced people’s risk of a symptomatic flu infection in a trial, and ...

Like human flu viruses, many flu viruses that infect animals use sialic acids to enter host cells. However, some use a different entryway, called the major histocompatibility complex class II (MHC ...

Stock image of a blood test for H5N1 bird flu infection. Diy13/iStock / Getty Images Plus. In their study, Reed and his colleagues demonstrated that a pre-treatment with their broadly neutralizing ...

California researchers say the world may be just one genetic tweak away from human-to-human transmission of the H5N1 bird flu virus — a worrisome mutation that could open the door to widespread ...

Two types of influenza viruses are responsible for seasonal flu outbreaks: Influenza A and B. Influenza A accounts for around 75 percent of all cases and tends to cause more severe illness in adults.

All four flu pandemics — in 1918, 1957 and 1968 and the swine flu pandemic of 2009 — were caused by Type A viruses. Influenza B viruses, however, only circulate in humans.