Volume 12, Number 1—January 2006
THEME ISSUE
Influenza
Prevention
Vaccines and Antiviral Drugs in Pandemic Preparedness
Arnold S. Monto*
Table
Influenza A subtypes in humans
| Year of recognition | Old terminology | Molecular antigenic terminology |
|---|---|---|
| 1889 | H2* | |
| 1902 | H3* | |
| 1918 | Swine influenza | H1N1 |
| 1932 | A0 | H1N1 |
| 1947 | A prime | H1N1 |
| 1957 | Asian | H2N2 |
| 1968 | Hong Kong | H3N2 |
| 1976 | Swine | H1N1† |
| 1977 | Russian | H1N1 |
*Unknown N subtype.
†Limited human-to-human transmission.
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