Asian flu of 1957, also called Asian flu pandemic of 1957, outbreak of influenza that was first identified in February 1957 in East Asia and that subsequently spread to countries worldwide. The 1957 Asian flu was the second major influenza pandemic to occur in the 20th century; it followed the. Asian flu: A pandemic of influenza A (H2N2) in 1957-58. First identified in China in late February 1957, the Asian flu spread to the United States by June 1957 where it caused about 70,000 deaths. Also known as Asian influenza. Immunity to this strain of influenza A (H2N2) was rare in people less than 65 years of age, and a pandemic was predicted.Author: William C. Shiel Jr., MD, FACP, FACR.
Mar 21, 2019 · Avian influenza refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses. These viruses occur naturally among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. Avian . (The H5N1 virus recently detected in U.S. wild birds is a new mixed virus (a reassortant) that is genetically different from the Asian avian H5N1 viruses). Flu viruses are constantly changing and animal flu viruses can change such that they may gain the ability to infect people easily and spread among people, causing a pandemic.