From Rochelle Walensky, CDC director:

These new boosters were tested on mice rather than people, a controversial strategy aimed at saving time(it's not unprecedented, however, as flu shots are changed each year without being routinely tested).

Looking at the data, Walensky says health authorities are confident about how well the vaccines will work and how safe they will be.

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That data includes the 600 million doses of the original vaccine that have been administered across the country with what Walensky calls "an extraordinary safety record." Officials also saw similar safety results for an earlier version of this bivalent vaccine (meaning it targets two strains) that was tested in some 1,400 people.

That booster targeted the original coronavirus strain as well as the omicron BA.1 strain, as opposed to the more prevalent BA.4 and BA.5 subvariants targeted in the newly authorized version of the shot.

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"So there are very subtle differences, butwe have no reason to expect that this is going to have any different safety signal than either the 600 million doses we previously have given or these other bivalent boosts against omicron," Walensky says.

What's already clear, she adds, is that protection against the virus wanes over time, and that a booster will restore protection against infection, severe disease and death. She also points to lab studies that show this updated booster improves immune responses against other SARS-CoV-2 variants as well as similar responses to the original variant.

"So we have every reason to expect that it'll work just as well, and likely better," she says.





what a lying bitch. no proof, testing on mice, "confident"..