Delta Variant as Contagious as Chickenpox30 Jul 2021 18:58
https://www.nytimes.com/2021/07/30/health/covid-cdc-delta-masks.html
C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox
"The Delta variant is more transmissible than the viruses that cause MERS, SARS, Ebola, the common cold, the seasonal flu and smallpox, and it is as contagious as chickenpox, according to the document, a copy of which was obtained by The New York Times.
“The C.D.C. is very concerned with the data coming in that Delta is a very serious threat that requires action now,” the official said.
There were 71,000 new cases per day on average in the United States, as of Thursday. The new data suggest that vaccinated people are spreading the virus and contributing to those numbers — although probably to a far lesser degree than the unvaccinated."