H2N2 is also called Asian Flu which has emerged in East Asia, triggering a pandemic in 1957. H2N2 virus is originated from an avian influenza A virus, including the H2 hemagglutinin and the N2 neuraminidase genes. It was first reported in Singapore in February 1957, Hong Kong in April 1957, and in coastal cities in the United States in summer 1957. The 1957 A/H2N2 influenza virus caused an estimated 2 million fatalities during the pandemic.
Strains of Influenza H2N2
Here we list some hot research strains of H2N2.