Juan Andres woke up three times during the night after putting his precious vials of vaccine on the back of a delivery lorry. In late February, Moderna, a biotech group based outside Boston, smashed the record for the fastest time between identifying a virus — in this case Covid-19 coronavirus — and creating a vaccine ready to test in humans: just 42 days.

In the lab, the team had been excited but in the early hours Mr Andres, a 30-year pharma veteran in charge of manufacturing, was nervously checking his phone to track the lorry carrying the potential vaccine to a discreet location. There the US National Institutes of Health would start the trial to test whether it works.

“The pride comes from this [being] a race,” he says. “Doing this as fast as possible is something that is a duty.” Once they were sure the vaccine had arrived safely, the team celebrated with ice cream. At least 100 Moderna staff worked on the project but Mr Andres says everyone is excited to be involved, even people’s families. “I can’t remember the last time my 15-year-old thought I did something cool,” he laughs.