SOUTH Africa will launch phase two of its vaccine rollout today with the aim of inoculating five million citizens aged over 60 by the end of June, the health minister said yesterday. "This is provided that the supply of vaccines flows as anticipated. By the end of June we expect to have received 4.5 million doses of Pfizer and 2 million doses from Johnson & Johnson," the minister, Zweli Mkhize, said during a webinar.