The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.
Survivors of previous infection with the virus that causes COVID-19, known as SARS-CoV-2, may be at higher risk for re-infection with the Omicron variant than with earlier versions of the virus, according to preliminary findings. In South Africa, where Omicron was first reported, researchers reviewed data on nearly 2.
A booster shot of the Pfizer/BioNTech COVID-19 vaccine appears to provide strong protection, at least in the short term, according to data from Israel. The odds of testing positive for the coronavirus were much lower in adults who received a third dose of the vaccine than in people who got their second dose more than five months ago, the data showed.
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Early Reports on Omicron Variant Are Encouraging, Fauci SaysAlthough the new Omicron variant is spreading across the U.S. and world quickly, early reports suggest that it may cause less severe disease than the Delta variant.
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