SOUTH Africa's health regulator has received documentation for China's Sinopharm COVID-19 vaccine and will evaluate the data to assess the efficacy of the shot. Now in the grip of a third wave of infections, South Africa is inoculating its population with Johnson & Johnson and Pfizer vaccines, but the rollout has been slow partly due to setbacks in supply. It has vaccinated just over 2 million people, 3.6% of its population, one of the world's lowest rates. Authorities have faced pressure from South African radical opposition party the Economic Freedom Fighters to authorise the use of Russian and Chinese vaccines…