The couple was admitted to the Ky Anh Town Medical Center in a state of unconsciousness, experiencing difficulty breathing and unresponsiveness. Doctors diagnosed carbon monoxide poisoning and transferred them to Ha Tinh General Hospital for specialized treatment.

According to relatives, the power went out around 10 PM on 25/8 due to the typhoon. The couple turned on a generator and then went to sleep. The generator was placed in the hallway connected to their bedroom, allowing the exhaust fumes to seep in and overcome them.

In the aftermath of Typhoon Kajiki, many families relied on generators for power. Doctors recommend placing generators in well-ventilated areas, never indoors, and ideally away from living spaces.

Carbon monoxide is a colorless, odorless gas, making it difficult to detect. When inhaled, it quickly enters the bloodstream, reducing oxygen levels and causing headaches, dizziness, weakness, nausea, chest pain, and confusion.

Common symptoms of carbon monoxide poisoning include nausea, headaches, weakness, shortness of breath, and mental confusion. If detected, open windows for ventilation, move the victim to fresh air, and immediately seek medical attention. 40% of carbon monoxide poisoning victims may experience lasting effects such as memory loss, difficulty concentrating, facial paralysis, movement disorders, difficulty walking, stiffness and tremors in the extremities, and hemiplegia.

Typhoon Kajiki raged for over 10 hours in Thanh Hoa, Nghe An, and Ha Tinh provinces, making landfall with winds of up to 133 km/h (level 12) before weakening to 74 km/h (level 8) at the Vietnam-Laos border. On the morning of 26/8, the typhoon weakened to a tropical depression over Laos, with maximum sustained winds of 61 km/h (level 7) and gusts up to 93 km/h (level 9), continuing to bring heavy rain to north-central Vietnam and the northern region.

Duc Hung