US CDC: Most Booster Shot Side Effects Are Mild

[Image source=AP Yonhap News]

[Asia Economy Reporter Cho Hyun-ui] Adverse reactions to booster shots in the United States were mostly mild, such as arm pain and fatigue.

The U.S. Centers for Disease Control and Prevention (CDC) released analysis data on the 22,191 people who voluntarily reported adverse reactions among those who received a booster shot after completing their second dose from last month 12th to this month 19th (local time) on the 28th.

Pain at the injection site was the most common at 71%, followed by fatigue (56%) and headache (43%). The number of people hospitalized after vaccination was 13, but the reasons for hospitalization were not confirmed in the survey.

Except for fewer than 200 people who received the first dose with the Janssen vaccine or the booster shot, about 99% of the reporters received their third dose with the mRNA (Pfizer·Moderna) vaccine, which was used for the second dose.

The reports were made within 7 days from the day of the booster shot vaccination.

Meanwhile, among the 12,591 people who completed the health check survey, the rates of local and systemic reactions were 79.4% and 74.1%, respectively, which were not significantly different from the reaction reporting rates after the second dose (77.6%, 76.5%).

Based on this, the CDC stated, "This shows that the occurrence of adverse reactions after the booster shot is within the expected range."

Rochelle Walensky, CDC Director, explained, "The types and frequency of reported adverse reactions are similar to those after the second dose," adding, "Most were mild and did not last long."

This content was produced with the assistance of AI translation services.