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ritcha

COVID-19 vaccines cause mostly mild side effects, CDC finds

Reported by ritcha | February 21st, 2021 @ 08:49 AM

More than 57 million doses of the COVID-19 vaccine have been distributed in the U.S., with 16 million people fully vaccinated. While polls show that one-third of Americans are still hesitant about getting vaccinated, a new report from the Centers for Disease Control and Prevention, released Friday, is providing more reason to feel confident.

In a press conference, CDC Director Dr. Rochelle Walensky told reporters that roughly 50 percent of individuals experience minor side effects after getting the vaccine, such as headache and dizziness. In a tweet following the briefing, she reinforced the promising nature of the data: "We have implemented the most comprehensive vaccine safety monitoring program in CDC history. Today'sAs states battle obstacles in vaccinating, here's what you need to know about the safety data.

The vast majority of adverse outcomes have been minor
The report covers the first month of Moderna's and Pfizer's vaccine distribution, using safety data from the Vaccine Adverse Event Reporting System (VAERS) and the CDC's text-message-based health checker known as "v-safe." Between Dec. 14 and Jan. 13, an estimated 13.8 million doses of the vaccines were administered, with 6,994 reports of adverse events after vaccination. The CDC classified 90 percent of these as "nonserious," meaning they were temporary and not life-threatening.

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The five most commonly reported nonserious outcomes were headache, fatigue, dizziness, chills and nausea — all of which were more likely to occur after the second shot. Dr. Gregory Poland, a vaccinologist and co-director of the Mayo Clinic's Vaccine Research Group, says it's "reassuring" and consistent with earlier data. "What this shows is the lack of any serious side effects related to either of the two mRNA vaccines," Poland says. "It shows what the clinical trials showed with the second dose — that there's an increase in ... local systemic side effects that go away."

Anaphylaxis was rare, occurring at a rate of 4.5 people per million
The 9 percent of serious outcomes, Poland says, aren't cause for concern. One of the most discussed was anaphylaxis, a life-threatening but treatable allergic reaction that occurred at a rate of 4.5 people per million. The number is smaller than the CDC's previous prediction, which was a rate of 11 individuals per million. Despite earlier suggestions that the vaccines may cause increased allergic reactions, the organization says that it is "within the range reported after receipt of inactivated influenza vaccine."

Two-thirds of the 113 deaths occurred among long-term facility residents and no causal link has been found
Although individual reports of deaths after vaccination may seem alarming, the researchers found no link between the 113 deaths — 78 of which occurred among long-term facility residents — and the vaccine. "Reported causes of death in [long-term care facility] residents after COVID-19 vaccination are consistent with expected all-cause mortality in this population," the report reads. "Among deaths in persons with available death certificate and autopsy information who were not [long-term care facility] residents, causes of death were consistent with background all-cause mortality and did not indicate any unexpected pattern that might suggest a causal relationship with vaccination."

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