A NEW SARS threat emerged yesterday as it was revealed an infected Taiwanese military scientist had not gone into strict home quarantine after becoming sick and two of his colleagues had travelled to the United States.

A wide international net was cast against a new Sars threat today as it was revealed that an infected Taiwanese military scientist had not gone into strict home quarantine after becoming sick and that two of his colleagues had travelled to the United States.

Health authorities in Taiwan are urgently trying to track down five foreign passengers on a flight taken by a man later diagnosed with SARS.