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Health care providers in the United States should stick to the two-dose schedule for both authorized COVID-19 vaccines, the Food and Drug Administration said in a statement this week. Some experts have suggested that delaying the second dose could stretch limited quantities of the vaccines further.
Any dose adjustments could be evaluated in clinical trials, FDA Commissioner Stephen Hahn and Peter Marks, the director of the Center for Biologics Evaluation and Research, said in a statement. “However, at this time, suggesting changes to the FDA-authorized dosing or schedules of these vaccines is premature and not rooted solidly in the available evidence,” they said.
Moderna’s COVID-19 vaccine takes two doses given 28 days apart, and the…
