Citing the rapid spread of the Omicron variant and the need for protection against it, U.S. federal health officials are shortening the recommended time between the second dose of the Moderna vaccine and a booster shot from six months down to five.
“The country is in the middle of a wave of the highly contagious Omicron variant, which spreads more rapidly than the original SARS-CoV-2 virus and other variants that have emerged,” Dr. Peter Marks, director of the U.S. Food and Drug Administration’s Center for Biologics Evaluation and Research, said in a statement.
