MMWR recomm. rep; 72 (2), 2023

Most of the influenza vaccines currently approved and available in the United States are produced by the propagation of influenza viruses in eggs (1-7). These vaccines therefore can contain small quantities of egg proteins. As of the 2022-23 influenza season, ACIP has recommended annual influenza vacci...

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MMWR recomm. rep; 71 (1), 2022

Estimated rates of influenza-associated hospitalization and death are generally highest among individuals 65 years of age and older (1-4), an age group for whom influenza vaccine effectiveness is often lower relative to younger populations (5, 6). Two inactivated influenza vaccines approved in the U.S. f...

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