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More worrisome variants expected after omicron, scientists say

“The faster omicron spreads, the more opportunities there are for mutation, potentially leading to more variants,” Leonardo Martinez, an infectious disease epidemiologist at Boston University, said.

Omicron is milder, better at evading vaccines, data reveals

An analysis of data from South Africa suggests the Pfizer vaccine offers less defense against infection from omicron and reduced, but still good, protection from hospitalization.

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