Rochelle Walensky made the comments after a study found protection against infection from a second Pfizer booster shot waned within weeks, while protection against severe disease remained.
) on March 29, on the basis that"emerging evidence suggests that a second booster dose of an mRNA COVID-19 vaccine improves protection against severe COVID-19 and is not associated with new safety concerns."News, Walensky provided some further guidance on when those eligible might choose to have the second booster dose.
CDC director Rochelle Walensky speaks at a Senate hearing in Washington D.C. in May, 2021. The CDC recently recommended additional COVID booster vaccines for certain individuals.There is also the issue of the vaccine's protection decreasing over time. Last week, Dr. Richard Besser, former acting director of the CDC, told NBC that people should"think thoughtfully" about when they want to get their fourth dose.
"If you're in an area where [COVID] is really, really low and you get the booster now and two, three months from now the rate goes up higher, I don't know [if] you're going to have the same protection than if you wait a couple months. So that's why I would say pay attention to what's going on locally. This is one of those situations where talking to your doctor really matters.
The researchers used data on 1.25 million people from the Israeli Ministry of Health database who were 60 years of age or older and eligible for a fourth dose between January 10 and March 2, 2022.
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