October 10, 2019 at 01:49PM Influenza candidate vaccine viruses improved by amino acid substitution in hemagglutinin

Scientists at the U.S. Food and Drug Administration (FDA) developed two candidate vaccine viruses (CVVs) that may be used as the starting material for production of inactivated influenza vaccines. These CVVs protected laboratory animals against a highly pathogenic strain of Influenza A (H7N9), a pot

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