Rolling out Covid vaccine poses chilly logistics problem

Delivering coronavirus vaccines at minus 80C seems a logistical nightmare. Although difficult, it’s not impossible. The supply chain industry has the ability to move products at such low temperatures, but capacity is limited. “The chill chain for most foods is set up for minus 4C, about what the flu jab is stored at, while the cold chain for frozen products is typically minus 25c, with warehouses and trucks capable of those temperatures,” says Richard Wilding, professor of supp