Speaking at a virtual press conference, the chief executives from the big four pharma companies said human trials of their vaccines were going 'so far, so good'. AstraZeneca's chief executive, Pascal Soriot, said he believes there will be 'several' Covid vaccines ready for mass-use this year Speaking at a virtual press conference, the chief executives from the big four pharma companies leading the race for a coronavirus jab said human trials of their vaccines were going 'so far, so good' Emma Walmsley, Chief Executive Officer of GSK Dr Albert Bourla, chairman at Pfizer