While this H2N2 strain still had a preference for bird receptors, the authors said the virus behind the Asian flu also started off with a dual preference, but adapted over time to become more inclined ...

The scientists exposed the cells to virus-like particles designed to resemble three different subtypes of flu viruses that have previously caused flu epidemics in humans: H1N1, H3N1 and H2N2.

Human influenza A viruses of subtype H2N2 and related H2N2 avian influenza viruses can enter cells through a second receptor. They use an alternative entry pathway." ...

"Human influenza A viruses of subtype H2N2 and related H2N2 avian influenza viruses can enter cells through a second receptor. They use an alternative entry pathway," says Stertz.

In lab tests, the antibodies inhibited propagation of viruses from subtype H2N2, the subtype that caused pandemic influenza in 1957-58, and H3N2 viruses from humans, swine, and birds.

Quadriflu vaccine or quadrivalent influenza vaccine will protect people from most strains of Swine flu including H1N1, H2N2, British as well as other variants.

The 1957-58 Asian flu pandemic caused by the H2N2 virus resulted in over two million deaths, the equivalent of about 7.5 million deaths today. The 1968 Hong Kong Flu pandemic caused by the H3N2 virus ...

The H3N2 virus could be traced back to the H2N2 virus through what is called an antigenic shift. The H2N2 had previously been a pandemic in 1957-58.

Only influenza type A viruses are known to have caused pandemics. The H3N2 subtype evolved from H2N2 virus and caused the pandemic in 1968-69 in Hong Kong.

There are no major cases of H3N2, and there are only a few cases. Very rarely do we find cases of swine flu (H1N1) and there is nothing to worry about, says experts While two deaths have been ...