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Learn more about COVID-19 vaccines and adverse events, including GBS.
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Guillain-Barré Syndrome (GBS) is a rare disorder where the body’s immune system damages nerve cells, causing muscle weakness and sometimes paralysis. Learn more about COVID-19 vaccines and adverse events, including myocarditis and pericarditis. Myocarditis and pericarditis after COVID-19 vaccination are rare. Myocarditis is inflammation of the heart muscle, and pericarditis is inflammation of the outer lining of the heart. Learn more about COVID-19 vaccines and adverse events, including TTS. Thrombosis with thrombocytopenia syndrome (TTS) is a rare but serious adverse event that causes blood clots or issues with clotting. Thrombosis with Thrombocytopenia Syndrome (TTS) Learn more about COVID-19 vaccines and allergic reactions, including anaphylaxis. Anaphylaxis after COVID-19 vaccination is rare. They are:Īnaphylaxis is a severe type of allergic reaction with symptoms such as hives, difficulty breathing, low blood pressure, or significant swelling of the tongue or lips. To date, the systems in place to monitor the safety of these vaccines have found four serious types of adverse events following COVID-19 vaccination, with evidence that suggests, although rare, a link to certain types of COVID-19 vaccinations that were administered. An adverse event can be caused by the vaccine or can be caused by a coincidental event not related to the vaccine, such as an unrelated fever, that happened following vaccination. Any health problem that happens after vaccination is considered an adverse event. In rare cases, people have experienced serious health events after COVID-19 vaccination. Adverse Events (Serious Safety Problems) Are Rare Learn more about common side effects after COVID-19 vaccination. Side effects may affect the ability to do daily activities, but they should go away within a few days. Some people have side effects after getting their COVID-19 vaccine, while others might have no side effects. This monitoring includes using both established and new safety monitoring systems to make sure that COVID-19 vaccines are safe. The Pfizer-BioNTech, Moderna, and Johnson & Johnson/Janssen and Novavax COVID-19 vaccines will continue to undergo the most intensive safety monitoring in US history. The vaccines met the Food and Drug Administration’s (FDA’s) rigorous scientific standards for safety, effectiveness, and manufacturing quality needed to support emergency use authorization (EUA). COVID-19 vaccines were evaluated in tens of thousands of participants in clinical trials. To view the current total number of COVID-19 vaccinations that have been administered in the United States, please visit the CDC COVID Data Tracker.ĬOVID-19 vaccines are safe and effective. More than 610 million doses of COVID-19 vaccine have been given in the United States from December 14, 2020, through August 31, 2022.