Vietnam announced a coronavirus-related death on Tuesday morning, taking the death toll to 25 so far.
The victim was 51 years old, residing in Da Nang, a touristy city on the central coast, a COVID-19 task force under the Ministry of Health said.
She had suffered ovarian cancer, kidney stones, and urinary tract infection.
The patient had had her left kidney cut off.
She died at the Da Nang Hospital for Lung Diseases of pneumonia caused by COVID-19 and other conditions, including myocardial infarction, septic shock, and multiorgan failure.
Vietnam has confirmed 25 virus-related fatalities so far.
The majority of the dead had suffered pre-existing conditions, including end-stage renal failure, blood cancer, respiratory failure, hypertension, diabetes, and sepsis.
Vietnam has documented 983 COVID-19 patients, including 645 local cases, as of Tuesday morning, according to the health ministry.
A total of 472 patients have recovered from the disease.
The country has recorded 505 local infections traced back to Da Nang since July 25, when the beach city detected the first community transmission after 99 days of zero domestic cases on a national scale.
The Vietnamese government has closed the border to foreigners since March, with exemption granted to foreign experts and skilled workers who are to undergo compulsory 14-day quarantine upon entry.
Authorities have sent planes to evacuate tens of thousands of Vietnamese citizens stranded in other countries over COVID-19 travel restrictions.
Over the past few weeks, relevant agencies have caught dozens of Chinese who made an illegal entry into Vietnam, one of them testing positive for the novel coronavirus on August 12.