An internal report from the U.S. Centers for Disease Control and Prevention has been released that the COVID-19 delta mutant virus is as contagious as chickenpox, an acute viral disease, and causes more serious illness.
According to the Centers for Disease Control and Prevention (CDC), the delta mutation spreads as easily as the chickenpox virus, infecting an average of 8 to 9 people per patient.
The original coronavirus transmission capacity was the same as a cold, infecting an average of about two people, but the delta mutation infectivity is stronger than the MERS, SARS, Ebola, common cold, seasonal flu, and smallpox viruses.
The report also found that the delta mutation could cause a 'breakthrough infection' that carries the virus even in vaccinated people and could cause more serious illness than all other mutations.
People with the delta mutation have huge amounts of the virus in their noses and throats, and it has been shown that people who get the vaccine after getting the mutation carry as many viruses as those who are not vaccinated.
However, the report found that vaccinated people were much safer than unvaccinated people, and found that the vaccine reduced the risk of serious illness and death by a factor of 10, and reduced the risk of infection by a factor of three.
He also advised the CDC to make vaccinations and masks mandatory, saying, "We have to admit that the charter has changed" for the response to the coronavirus because of the delta mutation.