The US Food and Drug Administration has expanded the emergency use authorization of the Pfizer and Moderna Covid-19 vaccines to allow adults age 50 and older to get a second booster as early as four months after their first booster dose of any Covid-19 vaccine.
The move extends the availability of additional boosters to healthy older adults. The FDA had previously allowed additional shots for anyone 12 years of age or older who was severely immune deficient.
“Current evidence suggests some waning of protection over time against serious outcomes from COVID-19 in older and immunocompromised individuals. Based on an analysis of emerging data, a second booster dose of either the Pfizer-BioNTech or Moderna COVID-19 vaccine could help increase protection levels for these higher-risk individuals,” said Dr. Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, in a news release. “Additionally, the data show that an initial booster dose is critical in helping to protect all adults from the potentially severe outcomes of COVID-19. So, those who have not received their initial booster dose are strongly encouraged to do so.”
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