It's one of the biggest pharmaceutical companies in the world, and now Johnson & Johnson (J&J) has revealed plans to start human testing of its experimental coronavirus vaccine by September.
According to J&J, the vaccine would then be ready for emergency use in early 2021. J&J also committed more than $1 billion (£810 million) of investment along with US agency Biomedical Advanced Research and Development Authority (BARDA) to co-fund vaccine research, expanding a previous collaboration.
Global efforts are underway to develop a vaccine for the virus that has killed over 34,000 worldwide, but experts have cautioned it could take over a year to have a vaccine ready.