That whole manufacturing process to work," said Dr. Which then your body starts saying 'oh this is foreign, I've never seen this before I'm going to develop antibodies to it.' That just takes a little bit of time. "It's basically a code that gets your body to begin producing the spike protein. In rare cases, people have developed delayed skin reactions after getting vaccinated. The Pfizer-BioNTech COVID-19 vaccine is administered in two doses, 3 weeks apart. Many pointed out feeling the side effects of the vaccine 10-12 hours after that second shot. What We Know About the Side Effects of Pfizer’s COVID-19 Vaccine Pain around the injection site. If system is revved up, could happen," said Dr. Meaning your immune system kind of reacts and if you have a more powerful immune system which you do if you're younger."Īnother side effect is insomnia. ![]() So the vaccine can induce what is called immunogenicity. younger is younger people have a stronger more exuberant immune system. The answer to women I don't think I know and I don't think we know. Wachter: "The younger is easier than the women. Luz Pena: "Why is it that women and younger people are having more side effects than the older folks?"ĭr. Pleasanton Resident Will Anz received his second Pfizer shot on March 24 and experienced side effects several hours after the vaccination. Not having side effects, you should consider yourself lucky, but the vaccine seems to work as well in people who didn't have side effects." The side effects are a sign that your body is producing its immune response. Does that mean it's not working?' The answer is: no. What is a little funky about that of course as soon as you say that people say 'Oh I didn't have side effects. The way I think about them is it is a sign that it's working. Luz Pena: "Having side effects is not a bad thing?"ĭr. ![]() Wachter says side effects after the second shot are more common because the immune response to the second shot is even stronger than the response to the first shot. Intramuscular route (Suspension) Although the licensed vaccine (Comirnaty) is FDA-approved in patients aged 16 or older for 2 doses, Pfizer-BioNTech COVID-19 vaccine is an unapproved product authorized for emergency use in individuals aged 12 through 15 years and to provide a third dose to individuals aged 12 years or older who are solid organ transplant recipients or have an. Robert Wachter, chief of medicine at UCSF says many of these side effects could last two to three days. SAN FRANCISCO (KGO) - As more people are eligible to get vaccinated, reports of side effects after the second Pfizer and Moderna shots are surfacing.ĭr. ![]() From April 2021: A UCSF doctor explains why there are people experiencing side effects after getting their second dose of the Pfizer or Moderna COVID-19 vaccine.
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