![]() ![]() In an interview with CNN’s Anderson Cooper, one woman who was a part of the Moderna vaccine trials noted having little effect from the first vaccine, but experienced more severe symptoms (muscle, joint and bone pain), lasting for about four hours, after the booster shot.Īgain, most of these reactions are normal. Play icon The triangle icon that indicates to play When these side effects occur, how long do they last?įor those who experience side effects, they don’t last very long- about 48 hours.įor both vaccines, the side effects are most prominent after the booster shot. The seasonal flu shot, which injects the inactive virus into you to help boost immunity, for example, also has side effects, which, according to the Centers for Disease and Prevention (CDC) include soreness, redness, and/or swelling from the shot, headache, fever, nausea, muscle aches-many of which are similar to what participants in COVID-19 trials have experienced. There were also four reported cases of Bell's palsy, which is the sudden weakness in facial muscles (think facial paralysis) on one side of the face, in each company’s trial.Ī lot of these side effects aren’t really all that out of the ordinary. While the Pfizer report above focused on events that produced severe reactions greater than 2 percent of the time, the CDC reports that other side effects include: Pfizer reported that during its Phase 3 trials, it saw: Side effects seen in the Pfizer vaccine trials The company reported that during its Phase 3 trials it saw: ![]() Side effects seen in the Moderna vaccine trials Lee, MD, MPH, a practicing family physician based in Orange County, CA. “It is entirely normal to experience some side effects with any vaccination: arm soreness, fatigue, body aches, and even fever,” explains Jay W. Natasha Bhuyan, MD, a practicing family physician based in Phoenix, AZ, says side effects from the COVID-19 vaccine were expected and they are short-lived (think a day or so). What are the side effects and how often do they occur? The vaccines teach your body to produce an immune response, and they do have the potential for short-term side effects. Yet among many people who are in line to get the vaccine, those who aren’t yet eligible, and those who are hesitant, there are questions about exactly what the side effects of those vaccines are, and how often they occur.Ĭollectively, the companies’ clinical trials have tested more than 73,000 people and separately have produced vaccines with over 90 percent effectiveness. Public response to the idea of a vaccine has also grown more favorable, with a national survey from PEW Research Center indicating that 60 percent of Americans would definitely or probably get a vaccine for the coronavirus, up from 51 percent in September. With the Pfizer BioNTech BNT162b2 vaccine and Moderna’s mRNA-1273 vaccine currently being administered to select groups, the buzz around the COVID-19 vaccine is palpable.
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