Results of a South African study show that Janssen Pharmaceutical Cos.’ COVID-19 vaccine provided effective protection against serious illness and death from SARS-CoV-2 infection, and that it was effective against the Beta and Delta variants. Both variants are prevalent in the country.
The open-label, single-arm Phase IIIb Sisonke (Together) trial involved more than 470,000 health care workers aged 18 and over. The...








