A 63-year-old woman from the Mekong Delta province of Vinh Long spent five days floating down the Mekong on a tangle of water hyacinth.
Locals discovered Pham Thi Mai of Vinh Long City 10 kilometers downstream.
Mai was rushed to the hospital by her family on Tuesday.
Doctors say she her energy was severely depleted due to dehydration, dangerously low blood pressure.
Her face and back were seriously sunburnt and insect bites covered her entire body.
Mai was nearly comatose when was admitted, but after hours of emergency treatment, she recovered.
According to her family, she disappeared shortly after walking out to the river bank behind her house on the evening of November 6.
After a thorough search of the area, the family nearly gave up hope of finding her.
It wasn't until 4 pm on Tuesday (November 11) that a fisherman in Long Ho District’s Phuoc Hau Commune found her floating down the river on the tangle of water hyacinth.
The fisherman notified local police who rushed Mai to hospital.