Phong also asked relevant agencies to impose tougher punishments on those failing to wear face masks in public places, entertainment venues and public means of transportation.
On Sunday, the HCMC Pasteur Institute confirmed that 85.7 percent of infected samples taken from imported Covid-19 cases from Cambodia contain the U.K. variant, and 14.3 percent have the South African variant.
Health Minister Nguyen Thanh Long has warned that Vietnam faces a great risk of imported Covid-19 infections with double mutant variants.
Several Southeast Asian countries including Cambodia, Laos and Thailand have been struggling with a significant surge in community transmissions linked to new variants.
Vietnam has gone over two months without Covid-19 community transmissions and several popular tourist destinations including Quang Ninh, Khanh Hoa and Hai Phong have planned fireworks shows and tourism festivals during the upcoming holiday, April 30-May 3.
Fireworks displays to mark major national celebrations like the Lunar New Year holiday or Tet, Reunification Day on April 30 and Independence Day on September 2 are a long-standing tradition in Vietnam.