AstraZeneca and J&J get go-ahead to resume Covid-19 vaccine trials

Major US Covid-19 vaccine trials from AstraZeneca and Johnson & Johnson were given the green light to restart on Friday, after the US regulator concluded it was safe to resume testing the experimental candidates. The two drugmakers’ US trials had been paused as the Food and Drug Administration investigated whether serious adverse events could be linked to the vaccines. The trial of AstraZeneca’s vaccine candidate, developed with Oxford university, had been paused since September 6 after a participant fell sick with neurological symptoms, even as studies in other countries including the UK were restarted.