Volunteers injecting Covid-19 vaccine warned of side effects

AmericaA nurse who received the experimental Pfizer vaccine experienced symptoms of headache, dizziness, chills, and fever up to 40.5 degrees Celsius.

Choi Kristen, an assistant professor at UCLA College of Nursing, Los Angeles, received two shots after signing up for the Pfizer vaccine trial in August. On the second shot, she had a headache, dizziness, chills, fever of 40.5 degrees Celsius, a high temperature she had never experienced. Symptoms disappear after 24 hours.

In the December 7 newsletter of the medical journal JAMA Internal Medicine, Choi said she had participated in the third phase of Pfizer’s vaccine trial after reading the Instagram ad in early August. and encourage registration as it is “an honor”.

Choi Kristen, join tPfizer vaccine trial in August. Dailymail

A few days after submitting the application, she was invited to participate by the coordinator. Since this was a randomized sampling trial, considered the gold standard of medical research, Choi didn’t know if she was vaccinated or a placebo.

“I thought about why I wanted a real vaccine (rather than a placebo), it would be important to me as a health worker. And I also thought of ordinary people, not knowing they would.” how do you feel about this random sampling, “she said. “Finally, the nurse on the program came to give me an injection. I wish to have the real vaccine.”

For the first time, Choi felt pain at the injection site. A month later, she returned for the second (also the last) injection, but this time, she felt very different.

She said: “The pain in my arm was more severe than the first. At the end of the day, I had dizziness, chills, nausea, a headache. I went to bed and fell asleep. By midnight, I was awake.” woke up in a worse condition with my arm unable to lift. At 5:30 am, I had a fever of 40.5 degrees C, the highest ever. I took acetaminophen fever-reducing medicine with lots of water, the temperature dropped 38.9 degrees C “.

The next day, she called the program nurse to report the condition. Gradually, the temperature also dropped. In the end, Choi was left with only pain and swelling at the injection site.

According to data from the pharmaceutical company Pfizer sent to the US Food and Drug Administration (FDA), side effects usually occur in adults aged 18 to 55. Approximately 84% of pain at the injection site, 55% pain head, 38% muscle pain, 32% chills, 24% joint pain. Serious “adverse reactions” are very rare, most likely to occur after the second dose and are generally less common in people over 55 years of age.

With her experience, Choi believes that she has been vaccinated.

“If the vaccine is approved, the person getting the shot is likely to have one of the symptoms that I experienced,” she said. “Fortunately, it’s very rare to have all the symptoms like me.”

What worries Choi the most is that these side effects will turn people away from vaccinations. Therefore, she suggested that doctors should warn vaccinated users of side effects “to prevent false information from spreading rapidly”. These side effects, she explained, are normal signs when the immune system responds to the vaccine.

On December 10, FDA’s vaccine advisory committee will discuss more about the latest analysis before voting for urgent approval. If authorized, the vaccine will be distributed across the United States from December 15.

The unborn (According to the JAMA Internal Medicine, Daily Mail)


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