But Dr. Rochelle Walensky said the delta variant remains the chief concern. With the omicron variant now detected in at least 16 states in the U.S., Centers for Disease Control Director Dr. Rochelle ...
Boosted attendees were 1.5 times less likely to test positive for COVID. Boosters helped reduce the risk of contracting the omicron variant after it spread at a convention in New York City, according ...
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