Vaccine batches at VNVC's cold storage. (Photo: VNA/VNS)

The shipments are part of the deal for 30 million doses that the Vietnam Vaccine Company (VNVC) has with AstraZeneca.

This is the first time AstraZeneca has shipped two separate batches to Vietnam in a single day, making it the biggest delivery out of the order to date.

With this shipment, 27% of the contract – 8.2 million doses – has been fulfilled.

Vietnam has to date received about 28 million doses of COVID-19 vaccines from various sources. Nearly 19 million doses have been administered.