SOUTH Africa aims to vaccinate around 1.1 million people against COVID-19 by the end of March as it ramps up its immunisation programme, Health Minister Zweli Mkhize said yesterday. Addressing parliament, Mkhize also said authorities might have to inoculate more than their original target of 40 million people to reach herd immunity. The country, hit far harder by the pandemic than any other in Africa, started rolling out Johnson & Johnson's (J&J) vaccine last week in a research study targeting healthcare workers. It hopes to receive doses of the Pfizer vaccine soon. Mkhize said so far more than 32,000 health…