Vietnam's health ministry has said it aims to vaccinate all of its adult population with a coronavirus booster shot by the end of the first quarter of next year, Reuters reports.

The Southeast Asian country has seen a surge in daily infections since it lifted most of its movement restrictions in October but has not reported any cases of the Omicron variant.

"The Covid-19 situation has been evolving in a complicated manner recently, with a rising trend in new infections," the ministry said in a statement.