The number of people who received the flu vaccine suspected of being exposed to room temperature during distribution has increased significantly to 1,910.

When the Korea Centers for Disease Control and Prevention announced the suspension of free vaccinations on the 21st of last month, it said that the vaccine in question was not used, but since the investigation began, the number of vaccinations continues to increase.

Eight of the people who received the vaccine in question had adverse reactions such as chills, headache, nausea, and hives.