<Anchor> The



U.S. quarantine authorities and the WHO have simultaneously warned of the contagiousness of the delta mutation. He emphasized that the transmission power is as strong as chickenpox, and that in the fight against Corona so far, we may lose the hard-earned things.



This news is delivered by reporter Kwon Ran.



<Reporter> The



US Centers for Disease Control and Prevention (CDC) said in an internal report that the delta mutation is more deadly than other mutations and is as powerful as chickenpox, so the battle against the virus has changed.



In particular, it has been found that even vaccinated people infected with the delta mutation transmit significant amounts of the virus, similar to those not vaccinated.



That's why the CDC recently urgently changed its guidelines to require US vaccinated people to wear masks too.



The World Health Organization (WHO) has also issued a warning about the contagiousness of the delta mutation.



Over the past four weeks, there has been an 80% increase in coronavirus cases in most parts of the world, driven by the delta mutation.



[Ghebreyesus / WHO Director-General: Due to the delta mutation, the hard-earned things in the fight against Corona are at risk or disappearing. The health systems of many countries are also being overwhelmed.]



However, both the CDC and WHO emphasize that vaccines are still the best defense against delta mutations.



[Jonathan Reiner/Professor, George Washington University School of Medicine: Delta mutation can kill you. If you haven't been vaccinated, it's still not too late. You can get the vaccine tomorrow.]



Specifically, a CDC report found that the vaccine reduces the risk of serious illness and death by a factor of 10 and reduces the risk of infection by a factor of three.