CLEAN : J&J's top scientist on their single-dose Covid vaccine

The video discusses a single-shot vaccine studied globally, highlighting its stability and ease of distribution. The study was conducted across three continents, showing the vaccine's efficacy against severe disease and hospitalization. It emphasizes the importance of both antibody and cellular immunity for durable protection. The video also mentions ongoing efforts to develop vaccines for emerging variants.

What percentage of protection does the vaccine provide against severe disease?

What precautionary measure is being taken regarding the South African variant?