![]() There are several vaccine monitoring and reporting systems in place.īut long-term effects from vaccinations are rare. And as more people receive vaccinations and boosters, the CDC and FDA continue to watch closely. Questions about the long-term safety of COVID vaccines are common. Severe fatigue was the most common at about 10%, and less than 1% experienced fever over 102☏. Severe side effects were also more common in people 18 to 64 years old in the Novavax clinical trials. In the single-dose Johnson & Johnson vaccine trials, severe side effects were more common in the 18 to 59 age range, with 1.4% experiencing muscle aches, 1.2% feeling severe fatigue, and 0.9% having a severe headache. In both the Moderna and Pfizer vaccines, fewer than 2% of people had a severe fever (102.2 to 104 degrees). ![]() Compare this with the Pfizer vaccine trials where severe side effects were lower: About 4% of adults had fatigue and 2% headache. In the Moderna vaccine trials, severe side effects included fatigue in about 10% of adults, muscle pain in about 9%, and joint pain and headache in about 5%. There are some differences in side effects between the vaccines, but the CDC does not recommend one vaccine over another. Which vaccine has the fewest side effects? If you believe you have experienced a vaccine side effect, you can report it to the Vaccine Adverse Event Reporting System (VAERS). These conditions are more common after COVID than after vaccination.Įxperts say the benefits of vaccination outweigh the risks for most people. Most cases of post-vaccination myocarditis have been linked to the mRNA vaccines (Pfizer and Moderna) in male adolescents and young adults, but some have been reported with Novavax. ![]() Symptoms include chest pain, shortness of breath, and palpitations. Myocarditis and pericarditis : These conditions occur when the heart muscle or lining become inflamed. It has occurred in people who received the Johnson & Johnson vaccine, mostly in men over 50 years old. Guillain-Barré syndrome : In this condition, the immune system causes nerve damage, leading to muscle weakness. It has been linked with the Johnson & Johnson vaccine. ![]() Thrombosis with thrombocytopenia syndrome: This rare blood disorder causes blood clots (thrombosis) and low platelets (thrombocytopenia). Severe allergic reaction : Symptoms include difficulty breathing, swelling of the mouth and/or tongue, hives, and feeling faint. Most people do not have serious side effects after being vaccinated, but they can occur. It’s also good to know that side effects do not mean that you have COVID, even though some of the symptoms may be the same (like fever or fatigue). At the same time, not everyone experiences side effects, so don’t worry if you feel fine. In fact, research suggests a link between symptoms and strength of antibody response. Side effects are the result of a normal, healthy immune system responding to the vaccine. The COVID vaccines are designed to teach your body how to fight coronavirus in the future. Side effects tend to be more likely after the second dose of the two-series vaccines and booster shots.īut keep in mind: If you do have side effects, they are a good sign that the vaccine is working. ![]() Mild side effectsįor most people, these side effects are mild and go away on their own in a couple of days. Mild, short-lived side effects can happen after getting any of the COVID vaccines. As with any vaccination, side effects are possible. In the United States, there are currently four approved or authorized vaccines to protect against COVID. According to the Centers for Disease Control and Prevention (CDC), a vaccination imitates an infection in your body, without making you sick. The COVID-19 vaccine is an injection (or sometimes a series of two injections) that helps your immune system learn to defend your body against coronavirus. ![]()
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