Can SA's decades-old vaccine regime work in our favour against Covid-19?

It’s too soon to say for sure, but a new study by scientists at the New York Institute of Technology (NYIT) could indicate a major score for SA in the fight against Covid-19

https://www.timeslive.co.za/news/south-africa/2020-04-03-can-sas-decades-old-vaccine-regime-work-in-our-favour-against-covid-19/