A 24-year-old woman with human swine flu has died at North District Hospital. The case will be referred to the coroner.

She came down with a fever and chest discomfort December 9, and was admitted to the hospital December 16. Her condition rapidly deteriorated and she died at 7.46pm yesterday.

Meanwhile, the Centre for Health Protection has detected three more human swine flu strains with mutations similar to the one reported in Norway, bringing the total number of such detections to eight in Hong Kong. Of them, three patients died and one is in intensive care. The four others have recovered.

The viruses remain sensitive to antiviral drugs oseltamivir and zanamivir.