A vaccine against Covid-19 developed in Britain has shown very encouraging results on rhesus macaque monkeys, among the animals closest to humans. The scientists working on the vaccine estimate that if they can prove its effectiveness, it could be ready as soon as September.

Its name is a mouthful, but it’s the vaccine on everyone’s lips: The ChAdOx1 nCoV-19, currently being developed by Oxford University scientists, has in recent days shot ahead to become the most promising potential vaccine against the novel coronavirus.