New Influenza
H3N2 virus is a subtype of the influenza A virus, which can cause seasonal flu epidemics in humans. It is named after the two main proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). H3N2 viruses can mutate quickly, which can make it challenging to develop effective vaccines against them. Influenza viruses, including H3N2, can cause a range of symptoms, from mild to severe, and can lead to complications such as pneumonia, especially in people with weakened immune systems or other underlying health conditions.