A White House official has said the US government will ship 2.4 million doses of Covid-19 vaccine to Pakistan, bringing the total number of doses sent to the country to about 18.3m which is more than any other country, Reuters reports.

The latest shipments of the vaccine lots made by Pfizer and Germany's BioNTech are due to arrive on Saturday via the Covax distribution programme, said the official, who asked to remain unidentified.