‘Chimney effect’ may be spreading Covid-19 at large private housing estate in Hong Kong, health expert says

A leading microbiologist is looking into how Covid-19 has spread in one of Hong Kong’s largest middle-class private estates, with the “chimney effect” possibly vertically transmitting the virus.A partial evacuation order was issued for Block 5 of Laguna City at Lam Tin in Kwun Tong on Monday after at least 10 cases had emerged in the building over the past two weeks, mostly in the E flats across multiple floors. Two security guards at the estate have also been confirmed as carrying the virus,…

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