JAMA Network
About The Study: In this case-control study of COVID-19 vaccines and illness, vaccine effectiveness associated with protection against medically attended COVID-19 illness was lower with increasing time since last dose; estimated vaccine effectiveness was higher after receipt of one or two booster doses compared with a primary series alone.
Authors: Ruth Link-Gelles, Ph.D., M.P.H., of the Centers for Disease Control and Prevention COVID-19 Response Team in Atlanta, is the corresponding author.
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(doi:10.1001/jamanetworkopen.2023.2598)
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