Multiple vaccine doses lowered risk of long COVID --study

Long-COVID diagnoses fairly common in Medicare claims Beneficiaries with 4 or more COVID-19 vaccine doses had a 39% lower rate of long COVID. CIDRAP

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Overall, beneficiaries with four or more COVID-19 vaccine doses had a 39% lower adjusted rate of long COVID relative to beneficiaries without a prior dose (adjusted hazard ratio, 0.61; 95% confidence interval [CI], 0.60 to 0.62).

"Long COVID diagnoses were relatively common, occurring in nearly 1 in 25 Medicare beneficiaries, but especially in those with certain chronic conditions and without prior COVID-19 vaccine doses," the authors concluded. "COVID-19 vaccine doses may mitigate long COVID risk through reducing viral load and the severity of natural infection, but additional causal inference studies are needed to confirm these hypotheses."

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