The Ministry of Health logged more than 11,500 domestic COVID-19 cases on Thursday, along with over 18,000 recoveries and 318 deaths.
Thirty-six provinces and cities recorded 11,569 local cases whereas a separate six infections were imported from abroad, the health ministry said.
The health ministry had documented 12,093 locally-infected patients on Wednesday.
Above 5,600 of the latest local cases were found in the community while the remaining were detected in isolated areas or centralized quarantine facilities.
Ho Chi Minh City reported 3,934 of the new domestic infections, down by 1,360 patients; Binh Duong Province 4,868, up by 739; Dong Nai Province 743; Long An Province 449; Tien Giang Province 354; Da Nang 144; An Giang Province 131; Khanh Hoa Province 131; Dong Thap Province 116; Kien Giang Province 112; Can Tho City 72; Ben Tre Province 55; and Hanoi 50.
Since the fourth COVID-19 wave began in Vietnam on April 27, the country has confirmed 388,814 community transmissions in 62 out of its 63 provinces and cities.
Ho Chi Minh City stays atop with 194,100 patients, followed by Binh Duong Province with 86,050, Dong Nai Province with 20,471, Long An Province with 19,495, Tien Giang Province with 8,509, Dong Thap Province with 6,432, Khanh Hoa Province with 5,993, Bac Giang Province with 5,842, Da Nang with 3,705, and Hanoi with 3,055.
By comparison, Vietnam confirmed 106 community cases in the first wave from January 23 to April 16, 2020, 554 in the second from July 25 to December 1, 2020, and 910 in the third from January 28 to March 25, 2021.
The ministry recorded 18,567 recoveries on Thursday, bringing the total to 188,488 recovered patients.
The death toll has climbed to 9,667 after the health ministry documented 318 fatalities the same day, including 242 in Ho Chi Minh City and 46 in Binh Duong Province.
The Southeast Asian country has detected an accumulation of 392,938 cases since the COVID-19 pandemic first hit it on January 23, 2020.
Health workers gave 430,924 vaccine doses on Wednesday.
More than 18.5 million vaccine shots have been administered in Vietnam since the country rolled out vaccination on March 8, with over 2.1 million people having been fully vaccinated.
The Vietnamese government expects to obtain 175 million shots of various vaccines, including 51 million Pfizer-BioNTech jabs, by early 2022.
It set a target of immunizing two-thirds of a population of nearly 98 million people against COVID-19 by the first quarter of next year.