UK to slow Covid vaccine rollout, PM Johnson says delay due to shipment from India's Serum Institute

The United Kingdom (UK) will have to slow its Covid-19 vaccine rollout in April due to a supply crunch caused by a delay in a shipment of millions of AstraZeneca vaccines from the Serum Institute of India.

Britain will have to slow its Covid-19 vaccine rollout next month due to a supply crunch caused by a delay in a shipment of millions of AstraZeneca shots from India and the need to test the stability of an additional 1.7 million doses. Supply constraints are the biggest threat to Britain's vaccine rollout - currently the swiftest among the world's major economies - and health officials warned that the programme would face a significant reduction in supplies from March 29. "It is true that in the short term we're receiving fewer vaccines than we had planned for a week ago," Prime Minister Boris Johnson told a news conference, saying this was because of a delay in a shipment from India's Serum Institute and because a batch in the UK needed to be retested.