//Coronavirus vaccines: ‘Encouraging’ early data for some, a trial delay for another and more research ahead

Coronavirus vaccines: ‘Encouraging’ early data for some, a trial delay for another and more research ahead

Scientists around the world are racing to develop Covid-19 vaccines and there’s news almost daily about steps forward — this week, there was “encouraging” preliminary data for some vaccine candidates and word from top health officials that the United States could be on track to have a vaccine by the end of the year.