All five local cases, numbered 2478-2482, were already quarantined when detected with the novel coronavirus.
The two imported cases, patients 2476 and 2477, are women aged 23 in Ho Chi Minh City. They had been quarantined February 28 on entering the country via the Ha Tien International Border Gate in the southern province of Kien Giang.
With three cases in the morning, Vietnam recorded 10 new cases Wednesday. The number of community transmissions since January 28 is now at 870, led by Hai Duong with 689 cases, followed by Quang Ninh (61), HCMC (36) and Hanoi (35).
Ten of the localities have gone nearly 20 days without any local transmission, including HCMC and Quang Ninh, and the latter reopened its Van Don International Airport Wednesday.
Covid-19 has claimed nearly 2.5 million lives globally.