CNBC reported:

The World Health Organization doesn’t recommend COVID-19 booster shots “at this time,” the group’s top vaccine doctor said Wednesday, citing a lack of data on their effectiveness.

Dr. Kate O’Brien, WHO’s director of immunization, vaccines and biologicals, said the organization is still researching whether a booster shot is needed to increase protection against highly contagious mutations of the coronavirus.

Executives from Pfizer, Moderna, and Johnson & Johnson, which make the three COVID vaccines authorized for use in the U.S., have all said Americans would eventually need a booster following their first series of vaccinations.

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