Pfizer Booster Can Be Given After 6 Months, European Drug Agency Says


The European Medicines Agency, the European Union’s main drug regulator, said on Monday that a booster shot of the Pfizer-BioNTech coronavirus vaccine could be given to healthy adults at least six months after the second dose.

The agency said data showed that antibody levels increased in people age 18 to 55 with normal immune systems who had received a third dose of the vaccine. It is still assessing booster shots of the Moderna vaccine.

The agency also said that people with “severely weakened” immune systems could receive an extra dose of the Pfizer-BioNTech or Moderna vaccines as early as 28 days after a second dose. It is expected that an additional shot “would increase protection in at least some of the patients,” the agency said.

The recommendation is based on studies showing that an extra dose of those vaccines could increase the ability to produce antibodies in organ transplant recipients.



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