The short-term side effects associated with the mRNA vaccines may also be contributing to reluctance. For some people, these vaccines are a breeze, but for others, a day or two of fever, aches, and chills are guaranteed to follow a booster. “We know from other vaccines that any mark in the ‘this is inconvenient for me’ column will suppress uptake,” said Malia Jones, an assistant professor of spatial dimensions of community health at the University of Wisconsin-Madison.
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