80% of Moderna vaccine receivers run fever after 2nd shots

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Nearly 80 percent of people who received their second shots of Moderna’s COVID-19 vaccine developed a fever of 37.5 degrees or higher, according to the health ministry.

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The figure is roughly twice that for those who were administered Pfizer’s vaccine.

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A group of researchers, including Suminobu Ito, a visiting professor at Juntendo University Hospital, surveyed Self-Defense Forces personnel and other recipients of the Moderna vaccine.

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They analyzed the data of 7,615 people who were administered their first shots and 2,491 people who received their second doses.

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The ministry’s subcommittee on Aug. 4 released an interim report on the survey.

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The report shows 7.3 percent of the people who were administered their first jabs ran a fever of 37.5 degrees or higher after the inoculations, while the figure was 78.4 percent for those who received their second shots.

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Of those who were administered their first doses, 2.1 percent developed a fever of 38 degrees or higher afterward, while the figure was 61.9 percent for those who received their second jabs, according to the report.

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More than 70 percent of respondents developed a fever the day after they were administered their second shots. Only 20 percent had a fever two days after their second jabs.

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In a separate survey of about 20,000 health care workers who received the Pfizer vaccine, 3.3 percent of those who were administered their first doses developed a fever of 37.5 degrees or higher afterward, while the figure was 38.1 percent for those who received their second shots.

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