Via The Standard: Source of H7N9 still a mystery.
A team of local medical experts met with Shenzhen and Guangdong provincial health authorities but could not trace the source of the H7N9 bird flu that has sickened two people in Hong Kong.
The team included Chuang Shuk- kwan, community medicine consultant at the Centre for Health Protection, and Tsang Tak-yin, medicine and geriatrics consultant at Princess Margaret Hospital.
Centre controller Leung Ting-hung said mainland health officials have started investigations and taken samples from poultry markets.
"The source of infection cannot be ascertained at this stage, which was agreed by both the Guangdong and Hong Kong sides," Leung said.
But he said that the second patient, an ailing 80-year-old who lives in Shenzhen, did not come into contact with live poultry, although his family members bought slaughtered chicken.
The information on the first patient, a 36-year-old domestic helper from Indonesia, has also been changed, with the center now saying it is not clear if she had indeed bought live chicken from a Shenzhen wet market.
"The patient had been to a flat in Longgang district in Shenzhen and had handled live chicken," Leung said. "But she was not able to tell us the source."
The condition of both patients has improved, with the helper no longer needing an artificial lung to breathe.
She is still in intensive care at Queen Mary Hospital but doctors are mulling transferring her to an isolation ward.
The elderly man has slight fever but was in stable condition last night at Princess Margaret, said Hospital Authority senior executive manager Liu Shao-haei.
Twelve of the helper's 17 close contacts have completed quarantine.
"Eleven of them can stay home for another 10 days of medical surveillance, and one will continue to stay in hospital due to their own health problem," Leung said. "The other five will continue to be under quarantine surveillance."
Another 230 contacts will also continue to be under medical surveillance.
The elderly man's 19 close contacts have all tested negative for H7N9 and are under quarantine, including six isolated at Lady MacLehose Holiday Village in Sai Kung. Another 140 contacts are under medical surveillance.