![]() ![]() ![]() “These include fatigue, sore arm, fever, and headache. Jose Mayorga, executive director of the University of California at Irvine Health’s Family Health Centers. “The typical side effects following a vaccination can be expected,” agreed Dr. “All of the other components are the same and the side effects come from the immune response.” “The only thing that changed is which proteins on the surface of the protein it encodes for,” Gallagher told Healthline. Jason Gallagher, an infectious disease expert and clinical professor at Temple University’s School of Pharmacy and a clinical pharmacy specialist in infectious diseases at Temple University Hospital in Philadelphia. There’s no reason to think that symptoms from the new booster would be different from previous COVID-19 vaccines and boosters, said Dr. “The risk after a booster dose appears to be lower than that after the primary series of vaccines,” she added. “The risk of myocarditis/pericarditis is rare and continues, as with previous vaccines, to be seen primarily among adolescents and young adult males,” Montecalvo told Healthline. FDA officials said it’s possible that similar problems could arise from the newest vaccine boosters as well. More serious but rare side effects of previous COVID-19 vaccines have included anaphylaxis and other severe allergic reactions, myocarditis, pericarditis, and fainting. Marisa Montecalvo, a professor of medicine and director for health services at New York Medical College, reported that “55 to 75 percent of people develop pain at the injection site, and a small percentage of people (5 percent) may have swelling or redness at the injection site.” The most common side effects from the Omicron BA.4 and BA.5 booster were pain at the injection site, fatigue, headache, joint and muscle pain, chills, axillary swelling and tenderness, nausea/vomiting, skin redness and swelling at the injection site, and fever.ĭr. But clinical trial research submitted to the FDA found that side effects of the Omicron booster were similar to the symptoms of other COVID-19 vaccines. That’s not long enough to compile real-world data on the boosters’ side effects. The “bivalent” booster vaccines became available to the public in early September. “Also, since the immune system will now recognize two similar variations, it may be more efficient at also recognizing new variants.” “Having a more specific spike protein for the immune system to look for should make the vaccine more effective at preventing infection and severe disease with the currently circulating variants,” Kristen Nichols, PharmD, a senior content management consultant for the clinical effectiveness sector at healthcare consultants Wolters Kluwer, told Healthline. Each targets both the original strain of COVID-19 as well as the latest Omicron (BA.4 and BA.5) variants of the novel coronavirus. In August, the Food and Drug Administration (FDA) gave emergency-use authorization to a pair of new booster shots, developed by pharmaceutical companies Pfizer-BioNTech and Moderna. However, the possible side effects of new vaccines specifically targeting Omicron are not likely to differ from those associated with previous vaccines and boosters. The Omicron variant of COVID-19 has a somewhat different set of typical symptoms than other versions of the disease. ![]()
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