Hong Kong's Tuen Mun Hospital announced Sunday that a female patient who had been infected with Influenza A/H1N1 virus died in the hospital on the same day.

The 43-year-old patient, who was a chronic smoker, developed flu symptoms on Aug. 23 and attended the Designated Flu Clinic on Aug. 24. The patient attended the Accident and Emergency Department of the hospital on Aug. 26 and was admitted to the Isolation Ward, according to a statement from the hospital.

On Aug. 26, the patient was tested positive for Influenza A/ H1N1 virus. She received Tamiflu, Relenza and antibiotics treatment. With her condition deteriorating, she was transferred to Intensive Care Unit on the same day.

The patient was in critical condition requiring ventilation support. Her condition continued to deteriorate and convalescent serum was given on Aug. 29. The patient was succumbed at 00:17 a.m. Sunday.

The case was reported to Hospital Authority Head Office and Center for Health Protection. The hospital has informed her family and will refer the case to Coroner, says the statement.