{"id":237044,"date":"2021-04-28T01:30:01","date_gmt":"2021-04-27T22:30:01","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/only-one-in-four-people-experience-mild-systemic-side-effects-from-covid-19-vaccines\/"},"modified":"2021-04-28T01:30:01","modified_gmt":"2021-04-27T22:30:01","slug":"only-one-in-four-people-experience-mild-systemic-side-effects-from-covid-19-vaccines","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/only-one-in-four-people-experience-mild-systemic-side-effects-from-covid-19-vaccines\/","title":{"rendered":"#Only one in four people experience mild systemic side effects from COVID-19 vaccines"},"content":{"rendered":"

“#Only one in four people experience mild systemic side effects from COVID-19 vaccines<\/strong>”<\/p>\n

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\n A medical assistant prepares a dose of a COVID-19 vaccine to be administered to a patient. Credit: Public domain image courtesy of Lisa Ferdinando, U.S. Department of Defense
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One in four people experience mild, short lived systemic side effects after receiving either the Pfizer or AstraZeneca vaccine, with headache, fatigue and tenderness the most common symptoms. Most side effects peaked within the first 24 hours following vaccination and usually lasted 1-2 days.\n <\/p>\n

The study published today in the Lancet Infectious Diseases<\/i> is the first large scale study to compare the two vaccines and investigate the prevalence of mild side effects of the UK’s vaccination program.<\/p>\n

The analysis by researchers from King’s College London of data from the ZOE COVID Symptom Study app<\/a> reassuringly found much fewer side effects in the general<\/a> population with both the Pfizer and AstraZeneca vaccines than reported in trials.<\/p>\n

The study also reports a significant decrease of infection rates from 12 to 21 days after the first dose of the Pfizer (58% reduction) and AstraZeneca (39% reduction) vaccines compared to a control group. The drop in infection at least 21 days after the first dose for Pfizer is 69% and for AstraZeneca 60%.<\/p>\n

This large-scale analysis examined the differences of reported side effects from the two vaccines currently distributed in the UK. Systemic effects\u2014meaning side effects excluding where the injection took place\u2014included headache, fatigue, chills and shiver, diarrhea, fever, arthralgia, myalgia, and nausea; whilst local side effects\u2014meaning side effects where the injection took place in the arm\u2014included pain at the site of injection, swelling, tenderness, redness, itch, warmth and swollen armpit glands.<\/p>\n

The data comes from 627,383 users of the ZOE COVID Symptom Study app who self-reported systemic and local effects within eight days of receiving one or two doses of the Pfizer vaccine or one dose of the AstraZeneca vaccine between December 8 and March 10.<\/p>\n

Summary of findings:<\/p>\n