DESERTED streets, empty restaurants and shut liquor stores greeted the first day of South Africa's move back to a harder lockdown, as a third wave of COVID-19 infections courses through a population less than 4% of whom have yet been partly vaccinated. Africa's most advanced economy recorded on Saturday 18,000 new infections, just 3,000 shy of its second wave peak seen in January. Government data shows that one in every four people being tested are showing a positive result. (Graphic on global cases and deaths) https://tmsnrt.rs/34pvUyi A slow vaccination drive, brought about by a combination of bad luck, failure to…