It turned out that the CDC = Centers for Disease Control and Prevention in the United States has compiled internal data that the mutant virus "Delta strain" may be as infectious as "Chickenpox".

Last month, several US media outlets obtained and released an internal CDC document summarizing the infectivity and risk of aggravation of the mutated coronavirus delta strain.



According to internal sources, the infectivity of the Delta strain can be transmitted to an average of 5 to 9.5 patients per patient, which is higher than the average of 1.5 to 3.5 patients of the conventional virus. I'm estimating.



In addition, in the case of chickenpox, which is said to be extremely infectious, one patient can infect about 8.5 people on average, and the Delta strain may have "the same level of infectivity as chickenpox." is.



In addition, national studies show that infection with the Delta strain increases the risk of illness and death, and shows that vaccinated people may spread the infection as well as non-vaccinated people. The results of the study show, "The battle phase has changed. The vaccine is highly effective, but we should call on those who have been vaccinated to take additional measures."



Last month, the CDC repeatedly called for caution against the spread of the Delta strain, including changing its guidelines and requiring those who have been vaccinated to wear masks indoors.