Via the Centre for Health Protection: Epidemiological investigation and follow-up actions by CHP on second confirmed human case of avian influenza A(H7N9). Excerpt:
The Centre for Health Protection (CHP) of the Department of Health (DH) today (December 8) provided an update on the second confirmed human case of avian influenza A(H7N9) in Hong Kong.
"The epidemiological investigation, enhanced disease surveillance, port health measures and health education are proceeding," a spokesman for the DH remarked.
The 80-year-old male patient lives in Fu Yong Xin He District in Shenzhen. As of 4pm today, no additional close contacts have been identified. The number of close contacts remains at 19 while there are over 140 other contacts. Details are as follows:
(A) The 19 close contacts remain under quarantine for 10 days since their last contact with the patient. Their specimens all tested negative for the avian influenza A(H7N9) virus upon preliminary laboratory testing by the Public Health Laboratory Services Branch of the CHP. They were prescribed with the antiviral Tamiflu prophylaxis. During isolation, if their health conditions change, further testing and surveillance will be conducted. They include:
1. Thirteen patients who had stayed in the same cubicle with the confirmed patient in Tuen Mun Hospital (TMH). One of them has newly developed fever and another specimen collected from the patient today tested negative for the avian influenza A(H7N9) virus;
2. His five family members; and
3. The taxi driver who had taken the patient and his family members from Shenzhen Bay Port Border Control Point (SBP BCP) to TMH on December 3.
(B) Over 140 other contacts, including other relatives of the patient, health-care workers (HCWs) of TMH and the ambulance service, relevant hospital visitors as well as an immigration control officer at SBP BCP, have been put under medical surveillance and offered Tamiflu prophylaxis. Among them, one HCW of TMH newly developed non-specific symptoms whose specimen collected today has been tested negative for the avian influenza A(H7N9) virus.
Regarding the first confirmed case affecting the 36-year-old female patient, as of 4pm today, no additional close contacts of this case have been identified. The number of close contacts remains at 17 while there are now 230 other contacts under medical surveillance. Of the 17 close contacts, 11 have completed quarantine and will continue to be put under medical surveillance for 10 more days. The remaining six close contacts remain under quarantine for 10 days since their last contact with the patient. During isolation, if their health conditions change, further testing and surveillance will be conducted.
The Lady MacLehose Holiday Village in Sai Kung under the Leisure and Cultural Services Department has been converted as quarantine centre. Currently, seven asymptomatic close contacts of the second case are under quarantine in the centre.
The epidemiological investigation into the two cases by the CHP, including contact tracing and tracing the source of infection, is ongoing.