SOUTH Africa has officially entered a second wave of the new coronavirus as the number of infections per day exceeds 6,000, the health minister said on Wednesday, raising concerns that restrictions to limit the spread could be tightened. Health Minister Zwelini Mkhize said in a televised address that infections stood at over 828,000 cases with deaths at more than 22,500, the most on the continent. Daily cases peaked at around 15,000 in July. "The increases are shown in about six of the provinces and that is why it is important for us to now recognise this is a second wave,"…