The new Omicron variant could make it more likely that people will need a fourth coronavirus vaccine earlier than expected, Pfizer officials said.
The CDC is still trying to determine how the Omicron variant may affect the course of the“What we generally know is the more mutations a variant has, the higher level you need your immunity to be,” Rochelle Walensky, MD, director of the CDC, told the AP.,” she said. “And that’s really what motivated the decision to expand our guidance [on boosters for all adults].”
The Omicron variant has been reported in 57 countries so far, World Health Organization officials reported on Wednesday, and they expect that number to continue growing. “Certain features of Omicron, including its global spread and large number of mutations, suggest it could have a major impact on the course of the pandemic. Exactly what that impact will be is still difficult to know,” Tedros Adhanom Ghebreyesus, PhD, the World Health Organization’s director-general, saidSeveral studies suggest that Omicron leads to a rapid increase in transmission, he said, though scientists are still trying to understand whether it can “outcompete Delta.
“Even though we still need answers to some crucial questions, we are not defenseless against Omicron or Delta,” he said. “The steps countries take today, and in the coming days and weeks, will determine how Omicron unfolds.”CNBC: “CNBC Transcript: Pfizer Chairman and CEO Albert Bourla Speaks with CNBC’s ‘Squawk Box’ Today.”The Associated Press: “The AP Interview: CDC chief says omicron mostly mild so far.
World Health Organization: “WHO Director-General’s opening remarks at the media briefing on COVID-19 -- 8 December 2021.”
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