Volume 16, Number 6—June 2010
Letter
Original Antigenic Sin and Pandemic (H1N1) 2009
Amesh A. Adalja
and D.A. Henderson
and D.A. HendersonTable
Influenza strains dominant for specific age cohorts from 1956 study*
| Age cohort, y | Influenza strain |
|---|---|
| 4–10 (born 1946–1952) | A′ |
| 17–28 (born 1928–1939) | A |
| >30 (born <1926) | Swine |
*Adapted from (3).
