The number of new coronavirus cases in Korea stood at 30,000, the lowest in 15 weeks as of the announcement on Tuesday.

Although it does not decrease significantly, the decline continues, but what is worrying is that mutant viruses that are causing the re-spreading of corona in other countries are being discovered one after another in Korea.

Reporter Han Seong-hee reports what kind it is.


The number of omicron strains found so far in Korea has increased to six, and the number of infected has increased to 30.

There were 19 cases of BA.2.12.1, which was first discovered and prevalent in the United States, and two cases were reported for the first time in Korea.

BA.2.12.1 has up to 27% more radio wave power than BA.2, a stealth Omicron.

In the United States, the weekly average daily number of confirmed cases is 94,23, which is attributed to a 60% increase from two weeks ago.

Among the remaining five species, it was confirmed for the first time that one person was infected with BA.4, which is spreading rapidly in South Africa, and two people were infected with BA.5.

One of them had completed the fourth dose.

Studies have not yet shown that these mutations are more toxic than stealth omicrons.

[Lee Sang-won / Head of Epidemiological Investigation and Analysis Team, Central Quarantine Countermeasure Headquarters: (out of 30 domestic mutant infections) there were no cases of serious illness or death, 27 people had already recovered from mild symptoms, and 3 people are being

treated at home.]

The effect may be reduced.

It is more likely to be re-infected.

[Park Young-joon / Head of Epidemiological Investigation Team, Central Quarantine Countermeasures Headquarters: The possibility of immune evasion exists, 'there is a possibility', and the initial situation is evaluated like this.]

Therefore, the re-epidemic trend that is appearing in various countries such as the United States and Europe has occurred in Korea. may also appear in

[Kim Nam-joong/Professor of Infectious Diseases, Seoul National University Hospital: Even if the sub-mutation is not widely prevalent in Korea, it is possible to estimate (trend) by looking at the epidemic situation in other countries.

I think it will show a similar trend.]

The government plans to start a survey on the antibody positivity rate of about 10,000 people nationwide this month to investigate the number of natural infections and the possibility of a resurgence.

(Video editing: Park Ji-in, CG: Ryu Sang-soo, Kim Jeong-eun)