A Mathura village woman was on Friday found to have been infected earlier this month with a South African strain of the coronavirus, while two district health workers have contracted the disease despite having been given both shots of the anti-Covid vaccine. Dr Bhudeo Singh, the in-charge of Mathura’s anti-Covid Rapid Response Team, said the woman’s test sample was on Friday found to be having South African strain of the Covid-19 virus during its genome sequencing by a government laboratory in Lucknow.