FDA authorizes a 2nd Covid booster shot for people 50 and older

The Food and Drug Administration on Tuesday authorized a second booster dose of the Pfizer-BioNTech and the Moderna Covid-19 vaccines for adults ages 50 and older.

People are eligible to get the additional dose at least four months after receiving their first booster, the FDA said in a statement.

Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, is expected to release a statement signing off on the additional shot shortly.

The FDA has already authorized a fourth shot for immunocompromised individuals.

Tuesday’s decision bypasses the independent panel of experts from both the FDA and the CDC, which have issued recommendations to the agencies throughout the pandemic on whether they should clear additional shots, and if so, for which groups.

The share of people who’ve received their first booster remains low in the United States, with fewer than 50 percent of those who are eligible for a booster having received one, according to data from the CDC.

Officials may have a hard time persuading people to get a second booster — as Covid cases, hospitalizations and deaths remain low, some people feel a lack of urgency and have a reduced fear of the disease, experts say.

In addition, many say the U.S. mishandled the rollout of the first booster shot last year when it authorized the dose in a confusing manner.

The move comes as federal health officials gauge whether an extremely contagious omicron subvariant, known as BA.2, will become a substantial threat in the country as it spreads throughout Europe and other parts of the world.

The subvariant accounts for about 55 percent of the new cases in the country, according to the latest data from the CDC.

Both Pfizer and Moderna asked the FDA this month to authorize a second booster, arguing that an additional booster is now needed because research shows protection from the initial booster wanes after a few months. Pfizer’s request was limited to adults ages 65 and older; Moderna’s was for all adults.

Among the research cited is a study from the CDC, which found that the effectiveness of Pfizer’s and Moderna’s vaccines against hospitalization decreased from 91 percent two months after the initial booster shot to 78 percent after four months.