Oxford University Covid-19 vaccine trial has only 50 per cent chance of success – The Telegraph

[P]harmaceutical giant AstraZeneca announced a $1.2 billion deal with the US government to produce 400 million doses of the unproven coronavirus vaccine first produced in Prof Hill’s Oxford lab.

Meanwhile, the British Government has agreed to pay for up to 100 million doses, adding that 30 million may be ready for UK citizens by September.

Project leader Prof Hill warns against ‘over-promising’, as vaccine success is far from guaranteed