Reports of anaphylaxis after coronavirus disease 2019 vaccination, South Korea, 26 February to 30 April 2021

The South Korea mass vaccination programme administered 3.8 million doses of COVID-19 vaccinations between 26 February and 30 April 2021. After 173 suspected anaphylaxis reports to the nationwide monitoring system for adverse events following immunisation, 44 anaphylaxis cases were confirmed using Brighton Collaboration case definitions. The rates per million doses were 18.2 cases and 6.2 cases for Vaxzevria and Comirnaty, respectively. Median time of onset was 14 min after vaccination and most cases had recovered at the time of review.

Automated summary

South Korea administered 3.8 million doses of COVID-19 vaccinations between February 26 and April 30, 2021, with 44 confirmed anaphylaxis cases out of 173 reported cases. The rates of anaphylaxis were 18.2 cases and 6.2 cases per million doses for Vaxzevria and Comirnaty, respectively. The median onset time was 14 minutes after vaccination, and most cases had recovered by the time of review.