In December 1972 reports began to circulate of cases of<unk>  throughout the United States.<unk> ' was a particular form of influenza caused by an influenza virus which had apparently first been identified in India in 1971, but was first identified as a distinct strain in England early in 1972.
London flu
Man flu
Spanish flu
Hong Kong flu
Freshers' flu
Bird Flu
Long COVID
Zero-COVID