Via the Centre for Health Protection: Epidemiological investigation and follow-up actions by CHP on confirmed human case of avian influenza A(H7N9). Excerpt from a long, detailed report:
A spokesman for the Centre for Health Protection (CHP) of the Department of Health (DH) today (December 3) provided an update on the first confirmed human case of avian influenza A(H7N9) in Hong Kong affecting a woman aged 36.
"The Serious Response Level under the Government's Preparedness Plan for Influenza Pandemic has been activated while the CHP's epidemiological investigation and follow-up actions are currently in full swing," the spokesman remarked.
As of 2pm today, contact tracing conducted by the CHP has located 17 close contacts and over 200 other contacts. Details are as follows:
(A) 17 close contacts of the patient have been quarantined and prescribed with Tamiflu prophylaxis, including:
1. All ten home contacts, including four with non-specific symptoms, have been quarantined in Princess Margaret Hospital (PMH). Their specimens all tested negative for the avian influenza A(H7) virus upon preliminary laboratory testing by the Public Health Laboratory Services Branch (PHLSB) of the CHP;
2. The female travel collateral aged 33 who visited Shenzhen with the patient has been located and has remained asymptomatic. Her specimen tested negative for the avian influenza A(H7) virus upon preliminary laboratory testing by the PHLSB and she was transferred to PMH for quarantine; and
3. Six patients who stayed in the same cubicle with the confirmed patient in Tuen Mun Hospital (TMH) are currently under quarantine in hospital pending laboratory testing.
The Lady MacLehose Holiday Village in Sai Kung under the Leisure and Cultural Services Department has been converted as quarantine centre and asymptomatic close contacts will be transferred there.
(B) Over 200 other contacts of the patient have been put under medical surveillance and offered with Tamiflu prophylaxis, including:
1. The two private doctors, Dr Simon Wong Siu-shan (Shop 17, G/F, Kai Hei Land Building, 385 Castle Peak Road) and Dr Wong Chun-yan (Shop 102A-103, G/F, Kam Wah Shopping Arcade, Tuen Lung Street), practising in Tuen Mun whom the patient respectively consulted at about 11am on November 25 and around 8.30pm on November 26 have been located. Both doctors, their staff, patients and accompanying relatives (over 30 persons) have all remained asymptomatic; and
2. Over 170 healthcare workers (HCWs) in TMH and QMH and the ambulance officers involved in patient transfer between the two hospitals have been identified. Seven of the HCWs who presented with non-specific symptoms have been tested negative for the avian influenza A(H7) virus.
Contact tracing by the CHP is ongoing.
A couple of comments: First, Mike Coston at Avian Flu Diary has produced a superb overview of Hong Kong's response to H7N9 here, here, here, and here. It amounts to an instant e-book, and it's an amazing achievement on short notice.