Report comes as countries scramble to ensure they will be among first to receive vaccines, if and when they become available; US biotech company to begin Phase 3 trials next month

Drugmaker to supply EU states with up to 400 million doses of desperately needed vaccine, as it scales up production with human trials still under way

US company says 'antibody cocktail' being tested on humans has ability to both prevent and treat infection

British pharma giant is partnering with Oxford University, which began trials with hundreds of volunteers in April, and is now expanding them to 10,000 participants