It's what we've called the 'Goldilocks phenomenon.' Not too much, not too little, but just right." "One body might release more than what's needed, causing the physical reactions, and another body might release exactly the right amount of immune signals. "Each of our bodies releases different amounts of chemicals or immune signals," Dr. And that treating the side effects is easier than treating COVID-19. Poland reminds people that these side effects generally go away with minimal or no treatment. Swift says to be prepared for these possible side effects:ĭr. COVID-19 Vaccine Allocation and Distribution / Mayo Clinic."Īfter you are vaccinated for COVID-19, especially the second dose of the two-dose series, Dr. Swift are available in the downloads at the end of the post. Journalists: Broadcast-quality sound bites with Dr. Melanie Swift discusses COVID-19 vaccines symptoms. It's what the vaccine is intended to do." "That shouldn't be confused with being harmful or being unsafe. "They do provoke an immune reaction, which can cause symptoms," says Dr. The same is true with the COVID-19 vaccines. Melanie Swift, co-chair of Mayo Clinic's COVID-19 Vaccine Allocation and Distribution Work Group, says all vaccines could cause some degree of reaction. "It's an indication that your body is revved up, prepared to do battle against what it thinks is a foreign invader." If people have less of a reaction, it does not mean they aren't developing an immune response, Dr. Poland says a reaction does not mean anything is wrong. It's what we've called the 'Goldilocks phenomenon.' Not too much, not too little, but just right." - Dr. One body might release more than what's needed, causing more of a response, and someone else's body might release exactly the right amount. "Each of our bodies releases different amounts of chemicals, or immune signals. Then you give it that second dose, and because the car has warmed up, you can put the pedal to the metal and go." But everybody is going to respond differently. "It's as if you've started a cold car, with the first dose," says Dr. He says the first dose teaches your body to recognize the virus and the second vaccine is kicking the body's system into gear. Gregory Poland, an infectious diseases expert and head of Mayo Clinic's Vaccine Research Group, says everybody is different. This may be a concern not only for those experiencing side effects, but also those who are worried a COVID-19 vaccine isn't working because they didn't have a reaction.ĭr. That was also true during the clinical trials. For some people, the second dose in a COVID-19 vaccination series is causing a stronger reaction and more side effects than the initial dose.
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