Two federal advisory committee members say evidence doesnt support a need for four shots.
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In an extraordinary move, the Food and Drug Administration had urged Pfizer and its partner BioNTech to apply earlier than the companies had planned.
The decision was bolstered by real-world evidence from the more than 200 million doses administered in the U.S. since the FDA cleared the shot in December 2020.
President Joe Biden announced Tuesday that the government would provide 500 million free rapid tests, increase support for hospitals and redouble vaccination and boosting efforts.
Blood samples taken a month after a booster showed people had levels of omicron-neutralizing antibodies that were similar to amounts proven protective against earlier variants after two doses.
U.S. health officials on Tuesday gave the final signoff to Pfizer’s kid-size COVID-19 shot, a major expansion of the nation’s vaccination campaign.
There have been more than 500 vaccine breakthrough infections of COVID-19 in fully vaccinated casino workers in Clark County, a number similar to that of health care workers.
Federal regulators are expected to authorize the mixing and matching of COVID-19 booster doses this week in an effort to provide flexibility as the campaign for extra shots expands.
In his most forceful pandemic actions and words, President Joe Biden on Thursday announced sweeping new federal vaccine requirements affecting as many as 100 million Americans.
Confusion and controversy erupt following announcement that booster shots for the general public are coming in September.