New discovery about the spread of COVID-19. Traces of the virus in a bathroom 10 floors above the apartment where the infected people lived



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Traces of coronavirus were found in the bathroom of an unoccupied apartment in Guangzhou, China. This suggests that the pathogen was carried through air and sewer pipes and is reminiscent of the SARS outbreak in Hong Kong 17 years ago.

In February traces of COVID-19 were found on the sink, taps and shower handle in an apartment where no one had lived for a long time, said Chinese researchers from the local Center for Disease Prevention and Control. The contaminated toilet was on top of an apartment where five people confirmed a week earlier with COVID-19 lived, according to Bloomberg.

The researchers conducted an experiment to see if the virus could spread through tiny particles of water in pipes.

These particles, called aerosols, were discovered 10 to 12 floors above the apartment where the sick lived.

A similar case occurred in Hong Kong in 2003, when 329 residents of a residential complex fell ill with SARS, infected by a faulty sewer. 42 of the complex’s residents later died in the most devastating SARS outbreak in a small community.

Previous research has shown that running water down the toilet can generate germ-containing aerosols, and those particles can linger in the air for long periods and can spread over distances of more than a meter in closed, unventilated spaces.



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