Sharon LaFraniere and Noah Weiland report in The New York Times that the Food and Drug Administration Dec. 9 authorized booster shots of the Pfizer-BioNTech coronavirus vaccine for 16- and 17-year-olds. That is good news as initial laboratory tests suggest that the new fast-spreading coronavirus variant, Omicron, "dulls the power of two doses of the Pfizer vaccine." Less than a month ago, everyone 18 and older became eligible for a booster shot, six months after their first two doses, and nearly 50 million Americans have been boosted since then. “Since we first authorized the vaccine, new evidence indicates that vaccine effectiveness against COVID-19 is waning after the second dose of the vaccine for all adults and for those in the 16- and 17-year-old age group,” said Dr. Peter Marks, who oversees the F.D.A.’s vaccine division. A booster, he added, “will help provide continued protection against COVID-19 in this and older age groups.” President Joe Biden said it was, “even more great news from the F.D.A. and C.D.C.... I say it to all of you: If you got vaccinated six months ago, get your booster right away.” Read more about this story in The New York Times.