After last year's sweeping outbreak of Hong Kong flu in some 36 states, scientists ex pected little trouble this win ter. The finding resolves a long-standing puzzle about the way flu outbreaks spread, and could help control future epidemics. The epidemics usually oc cur in two‐year to three‐year cycles. The Lost Worlds of the 1918 Influenza Epidemic, Oxford 2012, pp. A second wave of influenza … 1974, p. 11. 1974 smallpox epidemic of India: 1974 India: Smallpox: 15,000 Soviet flu: 1977–78 Worldwide: Influenza A virus subtype H1N1: 10,000–30,000 Sverdlovsk anthrax leak: 1979 Russia: Anthrax: 105 HIV/AIDS pandemic: 1981–present Worldwide: HIV/AIDS An influenza pandemic is a global outbreak of a new influenza A virus that is very different from current and recently circulating human seasonal influenza A viruses. The New York Times reported on its front page that the “virus that caused the greatest world epidemic of influenza in modern history—the pandemic of 1918-19—may have returned.” 131-133. I was a student at Oxford University and surprise, surprise, my blood shows I got it. In March and April, a localized outbreak of influenza A in the middle Atlantic states was reported. The final great epidemic of the 20th Century was Russian flu, which hit Britain in 1977. The flu epidemic appeared to be over in December, but many places saw a second wave of the epidemic in January and February of 1958. The Spanish Influenza, which swept the United States in 1918, is the worst single pandemic to enter the U.S. in its history. Influenza B strains isolated in the 1973-1974 season were similar to B/Hong Kong/5/72, B/Victoria/98926/70, and strains intermediate between the 2. It is rooted in a 1976 swine flu outbreak at Fort Dix in New Jersey, which resulted in the death of a U.S. soldier. 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