SOUTH African health inspectors will carry out further checks on a batch of Johnson & Johnson COVID-19 vaccines following a contamination error earlier this year at the U.S. plant where the doses were produced, the health ministry said. As fears of a third COVID-19 wave grow in the hard-hit country, the ministry said late on Friday that officials from the health products regulator would assess the vaccines to ensure they are suitable for use. "There is now a real possibility that they may not be, however this is for the regulator to rule on," a ministry statement said. The ministry…