India extends shelf life of AstraZeneca vaccine: Report

India's drug regulator has allowed the AstraZeneca Covid-19 vaccine to be used for up to nine months from its manufacture date, as opposed to the prescribed six months, according to a document reviewed by Reuters and a source.The approval, given to a licensed version of the drug made by the Serum Institute of India (SII) and exported to dozens of countries, could help health authorities minimise vaccine wastage and better plan their inoculation programmes.