Adverse reactions… things only a frit would worry about Moderna’s data showed no major safety issues although the shot did cause some temporary reactions including injection site pain, fever, headache, tiredness and aches that occurred somewhat more than with today’s flu shots.
So why bother? Flu vaccines must be updated annually to best match circulating strains of the virus. Vaccines made with the Nobel prize-winning mRNA technology are faster to manufacturer than other types, and experts say this additional option might help if the shape-shifting flu virus mutates in a way that requires suddenly brewing new doses.
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