[Reuters]–The US Centers for Disease Control and Prevention (CDC) has put together an internal document that the delta strain of the new coronavirus is as infectious as chickenpox and can cause serious illness. The New York Times reported on the 30th as a story of several experts.
The Delta strain is relatively likely to be infected even if it has been vaccinated.
The CDC announced on the 27th that it should change the guidelines for wearing masks and that vaccinated people should resume wearing masks, but the change in guidelines was based on this internal document.
However, CDC statistics show that the vaccine is extremely effective in preventing aggravation, hospitalization and death.
CDC Director Warrensky told the newspaper that a new study found a large amount of virus in the nose and throat of vaccinated people infected with the Delta strain.
The Delta strain is said to be more infectious than the viruses that cause Middle East Respiratory Syndrome (MERS), Severe Acute Respiratory Syndrome (SARS), Ebola, colds, seasonal flu, and smallpox.
The internal document states that the CDC’s next challenge is to “acknowledge that the battle has changed.”
According to the newspaper, the CDC will release additional data on Delta shares on the 30th.