A two-dose Pfizer/BioNTech vaccination provides just 33% protection against infection by the omicron variant of the coronavirus, but 70% protection against hospitalization, according to large-scale analysis in South Africa.
An analysis Tuesday of data from South Africa, where the new variant is driving a surge in infections, suggests the Pfizer vaccine offers less defense against infection from omicron and reduced, but still good, protection from hospitalization.
During past waves of the pandemic, the U.S. could look to Europe and Britain for an early signal of what was coming, Lemieux said. “With omicron, it seems to be happening everywhere all at once with extremely rapid kinetics.” “To date, omicron has disproportionately infected young adults — people who probably have more social contacts and are more likely to attend large gatherings,” Dowdy said. Young adults may be more likely to be sick without knowing it, have more intense exposures and experience milder disease, he said.
But it varies from place to place, and is as high as 13% in the New York/New Jersey area, according to the agency. The study did not look at booster shots, which are not yet prevalent in South Africa but which data from elsewhere has indicated improves protection.
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