An internal briefing by the Centers for Disease Control and Prevention (CDC) disclosed that, compared with all other known mutant strains, the Delta strain spreads faster and is more likely to infect vaccinated people and cause "breakthrough infection cases", and It may cause more serious diseases in people who have not been vaccinated
According to a report from the New York Times on the 30th, according to internal CDC documents they obtained, the new crown mutant strain Delta spreads quickly, and the basic infection number R0 value (the number of people infected per infected person) is as high as eight to nine.
New York Times According to the document, the R0 value of the original strain of the new crown virus is 2, which is equivalent to a common cold, but the Delta mutant strain is almost like another brand new virus.
CDC Director Valensky confirmed to CNN that this internal briefing was true, and pointed out that the delta mutant is currently known as "one of the most easily transmitted viruses", and the rate of transmission is similar to that of measles and chickenpox
Valensky admitted that the Delta strain "changed the war against the epidemic" and faced the threat of mutated viruses and required a comprehensive change in the anti-epidemic strategy
However, the CDC briefing in the United States also pointed out that people who have been vaccinated have a 10-fold lower chance of being severely ill than those who have not been vaccinated, and the chance of infection is three times lower.
Focus on the new crown pneumonia epidemic
This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only.
This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of
the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed
description of the concern or complaint, to
service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content
will be removed immediately.
