Simnikiwe Hlatshaneni Studies show a positive response to delaying the second jab, meaning the government can use this delay to secure more vaccine doses. Picture File: Petra Pliego receives her first dose of the Pfizer Covid-19 vaccine from a health care worker at a clinic targeting Central American Indigenous residents at CIELO, an Indigenous rights organisation, on 10 April 2021 in Los Angeles, California. Picture: AFP. The government can make the best of a bad situation and buy itself time to fine-tune the vaccine rollout, by stretching the delay between the required two doses of the Pfizer Covid-19 vaccine to three months, experts say. This follows Health Minister Dr Zweli Mkhize s announcement earlier this week that due to a recent scientific discovery, recipients of the Pfizer two-dose vaccine regime will wai