The estimated number of so-called 'breakthrough infections' confirmed two weeks after completing the COVID-19 vaccine has increased significantly in line with the recent 4th pandemic.

The Central Quarantine Countermeasures Headquarters announced that as of the 19th, a total of 647 suspected cases of breakthrough infection in Korea were confirmed.

This is about 12 per 100,000 vaccinations.

This number is 395 more than the 252 people counted as of 00:00 on the 8th, and more than doubled in 11 days.

Looking at the estimated breakthrough cases by vaccine, Janssen had the most with 364, Pfizer with 145, and AstraZeneca with 148.

The breakthrough rate of infection per 100,000 people vaccinated was 32 for Janssen vaccine, 14.1 for AstraZeneca, and 4.4 for Pfizer.

Regarding the high estimate of breakthrough infection related to the Janssen vaccine, the quarantine authorities said, "At the moment, we do not see it as a special issue."

However, he added, "People who are active and have a lot of transmission through their peers are more likely to be infected, but young people get the Janssen vaccine a lot.

Authorities emphasized that breakthrough infections can occur with any vaccine and that the chances of a serious illness are low.

In fact, as of the 19th, out of 647 estimated cases, 4 were in severe cases and there were no deaths.