COVID19 has exposed another weakness, its buildings! Several buildings have INTERNAL path for infection of the buildings residents.
Since February 2020 COVID19 infection has been found to be spreading within buildings, to apartments on different floors of the same building. Frankly, it has reached epidemic proportions in the public housing sector, every CHP press conference implicates more and more buildings. tracking sick building link http://www.kelcroft.com.hk/sbs.htm