Vietnam will offer the coronavirus vaccine jointly developed by Pfizer and BioNTech as a second dose option for people first inoculated with the AstraZeneca vaccine, the government said on Tuesday.

Vietnam's mass inoculation campaign is in its early stages, with less than 300,000 people fully vaccinated so far. It has so far used AstraZeneca's viral vector vaccine and last week took delivery of 97,000 doses of the Pfizer-BioNTech mRNA shot.

"Pfizer vaccines will be prioritised for people who were given first...