A doctor tests for COVID at UTHSC’s Tiger Lane testing site in April of last year. UTHSC has sequenced and confirmed a single case of the South African variant. (Patrick Lantrip/Daily Memphian)

South African strain has shown to be more resistant to vaccines than other known variants. View this article on our website Support quality, local journalism and access exclusive content by becoming a subscriber at dailymemphian.com. .....