Talks are underway with Johnson & Johnson about running a booster trial in South Africa after the company’s Covid-19 vaccine was used in a mass trial of almost half a million health workers in the country. The trial would include participants from that study, known as Sisonke, and could possibly start in October, according to Glenda Gray, who is co-lead of the mass trial. It would add to a booster study in the country using ImmunityBio’s shot that has already started.
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