During the 1976 US swine flu vaccination program, prompted by the H1N1 outbreak at Fort Dix, nearly 43 million Americans were vaccinated in the first 10 weeks before the program was halted.
Notes on verification
The CDC Museum states the program vaccinated nearly 43 million Americans in its first 10 weeks; the program began in October 1976 and was halted in mid-December 1976. Wording corrected on 1 Oct 2026 after review.
Sources
- Influenza Historic Timeline 1930 and Beyond | Pandemic Influenza (Flu) | CDC (archive.cdc.gov)
- https://www.historyofvaccines.org/history/swine-flu-vaccine/overview (historyofvaccines.org)
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3391896/ (ncbi.nlm.nih.gov)