Shenzhen health authorities said yesterday that a patient suspected of having swine flu who passed through Chek Lap Kok airport had tested negative. The 42-year-old Japanese man had a slight fever when he arrived by ferry in Shekou on Tuesday afternoon. He was sent to Shenzhen's Third People's Hospital, but respiratory experts confirmed he did not have influenza A (H1N1), said Shenzhen Health Bureau chief Jiang Hanping. The man had a temperature of 37.8 degrees Celsius but no other symptoms. The patient was on a business trip. Shenzhen health authorities would not reveal more details, such as whether the patient had recently travelled to any countries that had swine flu outbreaks. Forty-seven ferry passengers and crew members were also discharged from the hospital after overnight observation. The Shekou port reopened yesterday after it had been shut for disinfection. The Shenzhen health watchdog ordered the city's emergency centre to send all suspected swine flu patients to the Third People's Hospital to avoid causing infections in other hospitals and clinics.