What are Most Common Side Effects of COVID-19 Vaccines?
AARP’s recent article entitled “What Are the Side Effects of COVID-19 Vaccines?” reports that the FDA says the most common side effects among participants in both the Pfizer-BioNTech and Moderna Phase 3 clinical trials were the following:
- Injection site pain
- Muscle pain
- Joint pain; and
These reactions are temporary and will “self-resolve” within a few days.
Side effects from vaccines aren’t uncommon. For example, the seasonal flu shot can cause fever and fatigue, or reactions.
Doctors say that a mild to moderate reaction is a good thing because it shows that the immune system is responding to the vaccine. However, the key, experts say, is temporary discomfort versus the long-term benefits of a potentially high level of protection from COVID-19, a disease that’s responsible for the deaths of more than 1.6 million people globally.
Federal analyses of both vaccine trials show that few adverse events, which the CDC defines as any health problem that happens after a shot (separate from the less serious side effects), were reported. There have been a few people who’ve reported severe allergic reactions — known as anaphylaxis —after receiving the Pfizer-BioNTech vaccine. As a result, the CDC is recommending that anyone who has ever had a severe allergic reaction to any ingredient in a COVID-19 vaccine not get it. The ingredients of authorized vaccines are on the FDA’s website. Talk to your doctor, if you have questions and keep in mind that serious reactions are relatively rare.
People must continue their prevention efforts to help slow the spread of the disease: mask wearing, social distancing and frequent handwashing. Note that it typically takes a few weeks for the body to build immunity to a disease after vaccination, so it’s possible you can get sick with COVID-19 even after you’ve been vaccinated. Experts also aren’t certain if the vaccines also block transmission of the virus.
Remember that it takes time to build up herd immunity, where enough of the population is protected from the virus that transmission slows significantly. Scientists aren’t sure what the magic number is to obtain herd immunity for COVID-19, but they think it’s around 70% of the population, which could take months to achieve through vaccination.
Reference: AARP (Dec. 21, 2020) “What Are the Side Effects of COVID-19 Vaccines?”
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