The Food and Drug Administration’s panel of vaccine advisers on May 28 recommended that the next round of COVID-19 vaccines target the XFG COVID-19 variant.
Eight of the nine members of the Vaccines and Related Biological Products Advisory Committee who voted during a meeting said that the next vaccines should be monovalent, or only include one antigen, and that the preferred antigen is XFG.
XFG variants, including XFG 1.1, are dominant in the United States, according to estimates from the Centers for Disease Control and Prevention.
The FDA has for years directed vaccine manufacturers to update their shots on an annual basis, to try to strengthen vaccine effectiveness….