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More severe outcomes, such as nausea, abdominal pain, vomiting and diarrhea remain relatively uncommon among the various adverse reactions. Symptoms like fever, joint pain and body chills were reported more frequently.

More systemic reactions following the vaccine were similarly benign, with fatigue, headache and myalgia being the most common reported outcomes.Īll of the local and systemic adverse effects became more frequent following the second dosage.

The side effects of the vaccines, however, tend to be mild the vast majority of reactions include pain at the injection site. Pfizer recipients also saw a slight uptick in reactions, with 68.6 percent reporting a reaction after a second shot. This pattern strengthened with a second dose, where 82 percent of Moderna recipients reported an adverse reaction. 28, 2021, Moderna’s vaccine appears to have a higher rate of side effects, with about 74 percent of V-safe respondents reported incidences following a single dose as opposed to the 65.4 percent who reported episodes following a single shot of the Pfizer vaccine. HAWAII CONSIDERS VACCINE PASSPORTS FOR INTER-ISLAND TRAVEL MODERNA SAYS ITS BOOSTER SHOT AGAINST COVID-19 VARIANTS IS ON THE WAYįOURTH WAVE OF COVID-19 IN MIDWEST HAS HIT ‘CATEGORY FIVE HURRICANE STATUS,’ SAYS ONE EXPERT The data collected reflected episodes of injection site pain, fatigue, itching and headaches, among other effects.Īnaphylactic episodes and other allergic reactions were not included. Published in the online journal JAMA, the study gathered patient data from the CDC’s V-Safe surveillance system that documents adverse reactions to the COVID-19 vaccines. Centers for Disease Control and Prevention (CDC) shows. Individuals who receive the Moderna vaccine are more likely to experience post-vaccine reactions and side effects, new data from the U.S.

The side effects tend to be benign, with fatigue, injection site pain and headaches being among the most common outcomes.More side effects were reported among patients who received the Moderna vaccine rather than the Pfizer shot.