Half a dozen people in China are thought to have caught coronavirus from sewage, in what scientists believe is the first example of the virus spreading in this way. The authors said the findings highlight the importance of managing sewage correctly, particularly in densely populated areas where hygiene and sanitation measures are poor. We talk to Dr Ravinder Mehta, Chief of Pulmonology and Critical Care, Apollo Hospitals, Bengaluru, on what this means for India.