Legionnaires Disease Outbreak Hong Kong update 17 Feb 2020

CHP reported one (1) additional Legionnaires Disease case on 17-2-2020, including the two nearby Kwun Tong cases, that brings the total number of cases to fourteen (14) so far in the Choi Hung and Ping Shek area. As reported by CHP all 14 cases involve persons with unspecified underlying illness.

The new case is a 72 year old male residing in Kam Shek House, Ping Shek Estate, the same building as previous case numbers 4, 5 and 8 (refer to map) reported more than ten days ago, that’s significant because the incubation period is normally 2-10 days.

Given the typical 2-10 day incubation period, this gentleman probably contracted the disease between 7 and 15 Feb. 2020, which is after the date CHP reported the Choi Hung MTR cooling towers were allegedly disinfected on the 4 Feb. 2020.

So far CHP has reported that six (6) cases match the specimens taken from the Choi Hung MTR station cooling towers before 4-2-2020, the exact date is not clear.

And MTR staff were witnessed working on one set of the Choi Hung MTR cooling towers on Sunday 16-2-2020, near the Leung Chung road / Ngau Chi Wan village sitting-out area (refer photo below)

Legionnaires Disease and novel coronavirus covid19 have similar presentations, considering the heightened surveillance and awareness surrounding the novel coronavirus covid19 it is inevitable that previously undiagnosed and unreported cases of Legionnaires Disease will be also be discovered.

Additional Hong Kong Legionnaires Disease Cases

In addition to the ongoing Choi Hung / Pink Shek outbreak, three (3) new cases were reported on 17-2-2020 residing in different areas of the city.

  1. A male patient, aged 56 with underlying illnesses, who lives in 1H Sands Street, Central and Western District (Kennedy Town)
  2. A male patient, aged 85 with underlying illnesses, who lives in Ma Tong Tsuen, Chuen Lung, Tsuen Wan;
  3. A male patient, aged 52 with underlying illnesses, who lives in 7 Sau Fu Street, Yuen Long.

Outside Choi Hung, there are six (6) cases in total with no apparent connection to the Choi Hung Outbreak. However, it must be said that the CHP reporting is vague.

legionella, legionnaires disease outbreak, Choi Hung, Ping Shek, cooling towers, Kowloon, pneumonia, Hong Kong

previous update:

http://www.kelcroftasia.com/2020/02/11/legionella-outbreak-hong-kong/

Legionnaires Disease & the Built Environment