India has put a temporary hold on all major exports of the AstraZeneca coronavirus shot made by the Serum Institute of India (SII), the world's biggest vaccine-maker, to meet domestic demand as infections rise, two sources told Reuters.

The move will also affect supplies to the Gavi/WHO-backed global Covax vaccine-sharing facility, through which 64 lower-income countries are supposed to get doses from SII, the programme's procurement and distributing partner Unicef told Reuters...