The woman in her 40s was first confirmed as infected with the coronavirus on January 29.
She was working as a guide on a tour bus with tourists from Wuhan, the epicentre of the outbreak, in January. The driver of the bus was also diagnosed with the virus.
After being discharged from hospital she tested negative for the virus on February 6, although she still had a cough at the time.
She had no symptoms a week later, but returned to the doctor on February 21 complaining of a sore throat and chest pains.