Pain at the injection site, alongside redness and/or swellingĪccording to current FDA publications, there's also a chance that swelling may occur in lymph nodes within the same arm as the injection site. In both trials, the most commonly reported side effects within a week of injection were: Sherrill Brown, M.D., medical director of infection prevention for AltaMed Health Services, indicates that current side effect notices published by the FDA sourced data from both Pfizer and Moderna's separate clinical trials for the earlier BA. Potential Omicron bivalent booster vaccine side effects:ĭata collected by the FDA for earlier bivalent COVID-19 booster vaccines suggests that these shots successfully provided immunogenicity (a boost to your immunity!) and elicited consistent side effects as compared to other COVID-19 vaccines, according to Dr. What does available data suggest about any side effects of a bivalent booster compared to a primary COVID-19 vaccine or earlier boosters administered in 2021? Virologists and vaccine experts explore what we know below. Martinello says, adding that this kind of approval system is similar to the annual flu vaccine. "The data that was already generated from the bivalent BA.1 vaccine, the human data, really gave the FDA the confidence that they could approach approving this new bivalent shot," Dr. Current authorizations are based on these previous studies, as laid out by health regulators at the Centers for Disease Control and Prevention (CDC). 
Martinello explains, as FDA regulators have seen a similar bivalent booster vaccine made by Pfizer and BioNTech for the "stealth" Omicron variant that spread rampantly last winter - and those bivalent boosters were extensively studied before they were rolled out. But you shouldn't be worried about any increase in side effects here, Dr. Scientists have readily admitted that this particular batch of bivalent vaccines, targeted towards BA.4 and BA.5 sub-Omicron variants, have yet to be studied in humans officially. "The other half is focused on the new sub-variants that have been causing nearly all the disease we've been seeing over the past few months." "Half of it is the same as the original vaccine," explains Richard Martinello, M.D., the medical director of infection prevention at Yale New Haven Health System.
#After effects of covid booster shot code
If you haven't heard of the term " bivalent" just yet, it refers to the fact that this updated vaccine contains genetic code targeted to the original strain of virus that spreads COVID-19, known as SARS-CoV-2 - in addition to parts of the Omicron-based strains that are circulating currently. With clinics and pharmacies across the nation (including CVS and Walgreens) now offering vaccination appointments, you may be curious to know more about this updated vaccine and what kind of side effects may be affecting you after the shot.
Those who have recently recovered from a COVID-19 illness also have special directives to consider before receiving a booster shot, which are outlined below.Īmericans are learning more about the new set of bivalent COVID-19 booster vaccines made by teams at Pfizer and Moderna after officials at the Food and Drug Administration (FDA) authorized its rollout earlier this month. 
Americans shouldn't expect to experience brand new side effects or symptoms and are less likely to have a severe reaction to this new booster vaccine.
Newly approved bivalent booster vaccines targeted at Omicron subvariants may prompt a similar group of side effects noted by researchers in earlier formulations.
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