Vaccines are still seen as the best way to allow economies to reopen while keeping the public safe, but many poorer nations are still lagging far behind their richer counterparts -- tens of millions in Asian cities are now once again living in lockdown.
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.
