Americans over 60 should get a second booster shot of a coronavirus vaccine, Dr. Ashish K. Jha, the new White House Covid-19 response coordinator, said on Sunday, citing “pretty compelling” new data from Israel indicating that a fourth shot significantly reduced infections and deaths among older people there.
Dr. Jha’s comments, on “Fox News Sunday,” came after the Food and Drug Administration on March 29 authorized second booster shots of the Pfizer-BioNTech and Moderna coronavirus vaccines for everyone 50 and older.
The F.D.A. said the move was an effort to strengthen waning immunity against severe disease as the more contagious subvariant of Omicron, known as BA.2, was emerging as the dominant version of the virus in the United States.
Asked if Americans should get a second booster shot, Dr. Jha, who was named the Biden administration’s Covid-19 response coordinator last month, pointed to research from Israel that indicated that a fourth shot offered strong protection, particularly against severe illness, in people over 60.