Home / Health / People receiving the Moderna COVID vaccine reported more side effects than those of Pfizer recipients.

People receiving the Moderna COVID vaccine reported more side effects than those of Pfizer recipients.



More people who received Moderna’s coronavirus vaccine reported more side effects than those who received Pfizer injection, according to a recent study.

Researchers analyzed reports from more than 3 million vax recipients collected through v-safe, a Centers for Disease Control and Prevention program that tracks reactions to vaccinations.

Almost 70 percent said they had injection site reactions such as pain or swelling, and half reported common side effects such as fatigue or chills.

“The number of participants who received the Moderna vaccine were higher compared to the vaccine. Pfizer-BioNTech Reactivity report This pattern became more pronounced after a second dosing, ”the researchers noted.

Joseph Kuresa received a COVID-19 vaccine from Shaun Murry on April 7, 2021 in Los Angeles.
Joseph Kuresa received a COVID-19 vaccine from Shaun Murry on April 7, 2021 in Los Angeles.
Los Angeles Times via Getty Images

Of those who received the Moderna shot, 73 percent said they had a reaction at the injection site, compared to 65 percent of those who received Pfizer’s vaccine.

Nearly 51 percent of Moderna recipients reported experiencing full-body symptoms, compared with 48 percent of those who received the Pfizer shot.

The report came from more than 3.6 million people who received their first COVID-19 vaccine before Feb. 21 and conducted at least one v-safe health survey within seven days of being crushed.

The study said the gap was widened after a second dose, according to reports of about 1.9 million people who completed their check-in after receiving a second injection.

Elementary School Education Resources Assistant Denker Raymundo Armagnac, 65, received the COVID-19 vaccination from Nurse Practitioner Mary Ann Topico on February 17, 2021.
Elementary School Education Resources Assistant Denker Raymundo Armagnac, 65, received the COVID-19 vaccination from Nurse Practitioner Mary Ann Topico on February 17, 2021.
Los Angeles Times via Getty Images

Nearly 82 percent of people who received the second dose of Moderna had pain at the injection site, compared with 69 percent of those who received the Pfizer vaccine.

Overall, 74 percent of Moderna recipients said they had full-body symptoms, compared to 64 percent of those who received Pfizer vax.

A nurse fills a syringe with the Moderna COVID-19 vaccine at a vaccination facility at the Senior Center on March 29, 2021 in San Antonio, Texas.
A nurse fills a syringe with the Moderna COVID-19 vaccine at a vaccination facility at the Senior Center on March 29, 2021 in San Antonio, Texas.
Getty Images

40 percent of people with Moderna reported especially chills, compared with just 22 percent of Pfizer recipients.

“Data from millions of v-safe participants indicated that pain at the injection site was common after both first and second doses of mRNA-treated vaccines,” the researchers noted.

The study was published Monday in the peer-reviewed medical journal JAMA.


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