As India plans to open more public transport, including the Metro trains, a new study has revealed that coronavirus can spread rapidly in a closed, small setting like a public transport. One Covid-19 infected person passed on the disease to 23 of 67 passengers on a bus, a new study published this week determined. According to a report in the American Medical Association journal, the spread happened in one of the two buses that carried a group of 128 people who visited a worship event in eastern China. The super-spreader, whose gender was not specified, had no symptoms such as a fever or cough at the time of travel, said the study.