If you have already left the clinic, consult your doctor or call 911. If you are experiencing any signs or symptoms, immediately notify the medical personnel in the observation area. Signs of a severe allergic reaction can include: difficulty breathing, swelling of your face and throat, a fast heartbeat, a bad rash all over your body, dizziness and weakness. General side effects include: chills headaches muscle pain fatigue fever nausea People with diabetes may note higher blood sugars for a few days after vaccination. Individuals with known allergic reactions (previous anaphylaxis to vaccines, food allergies, insects, etc.) must stay in the observation room for at least 30 minutes. For this reason, the Chester County Health Department requires that you remain at the vaccine clinic for at least 15 minutes for monitoring. However, reactions may occur up to 4 hours after injection. Severe allergic reactions occur in approximately 2.5 per 1,000,000 individuals (CDC, 2021).Ī severe allergic reaction usually occurs within a few minutes to one hour after getting a dose of a COVID-19 vaccine. There is a remote chance that a COVID-19 vaccine could cause a severe allergic reaction. Learn more about side effects and find helpful tips to reduce discomfort after your vaccination at: What to Expect after Getting a COVID-19 Vaccine Additionally, your reaction may be different following the second dose compared to the first dose. Not everyone will have the same reaction to the vaccine. Reactions to the vaccine are just as unique as you are. These reactions are a sign of the body’s immune response kicking into gear, creating antibodies that will not only help your body build protection against COVID-19, but train it to fight the virus much faster. While you may not feel well, the reaction means the vaccine is doing its job. Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart) have occurred in some people who have received COMIRNATY® (COVID-19 vaccine, mRNA) or Pfizer-BioNTech COVID-19 Vaccine. According to the CDC, after a meeting of expert advisors discussed the data Wednesday, more than 300 cases of heart inflammation have been documented after the Pfizer or Moderna COVID-19. These reactions are completely normal- and do not last very long. You may even feel flu-like, have a headache or body aches, or feel very tired. Reports of suspected side effects are notified to the HPRA on a voluntary basis by healthcare professionals and members of the public. Your reaction may be a sore arm or redness where the injection was given. The technical term for a vaccine that produces side effects is reactogenic: in other words, you react to it when it enters your system. In rare cases, the Pfizer vaccine has triggered inflammation of the heart. COVID-19 vaccines will have side effects and that’s a good thing!
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