India's rising output of Covid-19 vaccines and the inoculation of more than half its adult population with at least one dose are raising hopes the country will return as an exporter within months, ramping up from early next year, Reuters reports.

After donating or selling 66 million doses to nearly 100 countries, India barred exports in the middle of April to focus on domestic immunisation as infections exploded, upsetting the inoculation plans of many African and South Asian countries.

India's daily vaccinations surpassed 10 million doses on Friday, with national vaccine production more than doubling since April and set to rise again in the coming weeks.