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Israeli Survey Finds 3rd Pfizer Vaccine Dose Has Similar Side Effects to 2nd

Brittany Jordan

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JERUSALEM—Most people who received a third dose of Pfizer Inc’s COVID-19 vaccine felt similar or fewer side effects than they did after receiving the second shot, according to an initial survey in Israel.

Israel began offering the booster shots about 10 days ago to people over age 60 as part of efforts to slow the spread of the highly contagious Delta variant. That effectively turned Israel into a testing ground for a third dose before approval by the U.S. Food and Drug Administration.

Israel’s largest healthcare provider, Clalit, said on Sunday it had administered a third dose of the Pfizer/BioNTech vaccine to more than 240,000 people.

About 4,500 people, all of whom received the booster shot from July 30 to Aug. 1, responded to questions and were included in the survey.

Eighty-eight percent of participants in the survey said that in the days after receiving the third shot, they felt “similar or better” to how they felt after the second shot.

Thirty-one percent reported some side effect, the most common being soreness at the injection site.

About 0.4 percent said they suffered from difficulty breathing, and 1 percent said they sought medical treatment due to one or more side effect.

Ran Balicer, Clalit’s chief innovation officer, said that even though the results are “initial and self-reported”, they allow a comparison of side effects with the second dose, and “it turns out that in most cases they are similar or less in the booster.”

Brittany Jordan is an award-winning journalist who reports on breaking news in the U.S. and globally for the Federal Inquirer. Prior to her position at the Federal Inquirer, she was a general assignment features reporter for Newsweek, where she wrote about technology, politics, government news and important global events around the world. Her work has also appeared in the Washington Post, the South Florida Sun-Sentinel, Toronto Star, Frederick News-Post, West Hawaii Today, the Miami Herald, and more. Brittany enjoys food, travel, photography, and hoarding notebooks and journals. Her goal is to do more longform features journalism, narrative writing and documentary work, and to one day write a successful novel and screenplay.

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