[link to cbsaustin.com (secure)]

March 16

"Confirmed cases of B.1.1.7, the UK variant of COVID-19 are becoming less of a surprise each day in Texas cities."

“This variant of concern now makes up a large percentage of all Texas cases, and will in a few weeks be the predominant variant of concern,” said Dr. Ilya Finkelstein, Associate Professor of Molecular Biosciences at UT Austin. “Because that virus has a much faster transmission [rate].”"

Looking at the charts the UK variant did not appear to have much of an effect.

[link to www.kxan.com (secure)]

June 23

"AUSTIN (Nexstar) — The Delta variant of COVID-19 is on track to take over as the dominant variant in Texas by the end of summer."

"It’s more dangerous and more contagious than the current dominant variant, Dr. Rodney Young with Texas Tech Physicians explained Wednesday."

"“It appears to be something like 60% more transmissible than the UK variant we were talking about, which was already more transmissible than the original COVID variant,” Dr. Young said."

Basically the cases began to rise higher and higher at the end of June.

[link to www.nytimes.com (secure)]

"C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox"

Influenza has an R0 value of 1 generally and the initial variant in North America was claimed to have an R0 of 3 while Chicken Pox has an R0 of 10 to 12

The Delta variant showed up in the UK at the end of May and cases rocketed up until July 21st and then have been collapsing.