While each country’s inoculation strategies differ, Asia’s momentum reflects pent-up demand for the shots as a means to ease lockdowns, said Paul Griffin, an infectious disease expert at the University of Queensland in northeast Australia.

Australia is giving priority supplies to its largest cities, which are in lockdown to contain a third wave of infections fuelled by the Delta variant. It expects to have enough to complete vaccinations of those older than 12 by mid-October. read more

Japan has overcome initial logistics hurdles to give about a million shots a day since mid-June, as urgency has grown after Delta unleashed an unprecedented wave of infections and serious cases in August.