The Centre for Health Protection has published Epidemiological investigation and follow-up actions by CHP on confirmed human case of avian influenza A(H7N9). They're putting a lot of legwork into tracking down the little girl's contacts. Excerpt:
The Centre for Health Protection (CHP) of the Department of Health (DH) today (March 6) provided an update on the sixth confirmed human case of avian influenza A(H7N9), which is affecting an 18-month-old girl.
"The epidemiological investigations, enhanced disease surveillance, port health measures and health education against avian influenza are all ongoing," a spokesman for the DH said. As of 4pm today, 13 close contacts and 117 other contacts have been identified.
The close contacts included household members of the patient, and patients and two visitors who had stayed in the same room with the patient in Queen Elizabeth Hospital (QEH). Among them, two are symptomatic and one of them tested positive for Influenza A (H1) virus while the other tested negative for Influenza A virus. Of the remaining 11 close contacts, nine of them tested negative for Influenza A virus while the other two tested positive for Influenza A (H1) virus. They are now under quarantine.
Other contacts included healthcare workers, visitors, immigration staff at Lo Wu Control Point, and the doctor and patients of the private clinic which the patient consulted on February 28. Among them, two are symptomatic and tested negative for Influenza A virus. They are all under medical surveillance.