Coronavirus can linger in the air of crowded spaces or toilets for hours, study finds

Covid-19 can linger for hours in the air of crowded spaces and rooms such as toilets that lack ventilation, according to a new study by scientists who now recommended wearing masks in public. While the transmission of the coronavirus from direct human contact and through respiratory droplets, such as coughing or sneezing, is clear, the potential for airborne transmission is much less understood. The World Health Organisation has said the risk is limited to very specific circumstances, pointing to an analysis of more than 75,000 cases in China in which no transmission from breathing or talking was recorded. However, a study carried out by scientists from the University of Wuhan and published on Monday in the scientific research journal Nature, suggests the virus can potentially remain in the fair or some time in areas with poor ventilation. The study took samples from 30 sites across Wuhan, China, where the novel virus was first reported, including inside hospitals as well as public areas of the city during the height of its outbreak in February and March. It found levels of airborne virus particles in the majority of public areas was too low to be detectable, except in two areas prone to crowding - including the entrance of a department store.

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