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Historical path of the development of influenza vaccine.8
| 1930 | First experimental influenza vaccines (egg) |
| 1940 | Inactivated influenza vaccines (egg) |
| 1960 | Split influenza vaccines (egg) |
| 1980 | Subunit influenza vaccines (egg) |
| 2001 | Influenza vaccines cell-culture derived (MDCK) |
| 2013 | Modern DNA technology (Flublok) |
