<Anchor> The number of
presumed 'breakthrough infections' in which people are infected with Corona even though they have been vaccinated in Korea is rapidly increasing. Among them, the majority of cases are infected even after receiving the Janssen vaccine, and a study result was announced that the Janssen vaccine may require additional vaccination due to the lack of efficacy in the delta mutation, which is spreading rapidly in Korea. In the United States, where the delta mutation is spreading rapidly, we decided to start a discussion about the need for a booster dose.
Correspondent Kim Soo-hyung from Washington.
<Reporter>
This is a research paper published by Professor Landau and others from New York University Medical School on the effectiveness of vaccines based on blood analysis results of vaccinated people.
The New York Times reported that the Janssen vaccine is ineffective in responding to the delta mutation, so booster shots and additional vaccinations may be required.
Although laboratory analyzes have not yet been evaluated by fellow researchers, the paper concludes that 13 million Americans vaccinated with the Janssen vaccine may need booster shots.
The Centers for Disease Control and Prevention (CDC) plans to hold an expert meeting tomorrow (23rd) to discuss the need for a booster shot.
[Wollensky / CDC Director (hearing yesterday): Although the effectiveness of the vaccine will decrease, it is expected that it will not drop sharply. We are watching the effect diminish, and there will be time to act.] The number
of daily corona infections in the United States is now approaching 40,000.
As the delta mutation spread, it exploded by nearly 200% compared to two weeks ago.
There are concerns that if the US decides to inoculate the booster shot, which is a trouble even after accumulating vaccines, it could adversely affect the global vaccine supply.