A man infected with
coronavirus spread the virus to nine other people on his bus, raising fears the killer infection can jump between people far easier than initially thought in confined places.
A study found two victims sitting 4.5 metres (14.7ft) away from the man were later diagnosed, which is four times what is considered a 'safe distance' to stand near an COVID-19 patient.
Countries including
Italy and the UK have implemented one to two metre distancing between people to limit outbreaks.
The virus has been thought to spread via cough or sneeze droplets, but the study found germs can linger in the air for long periods of time.
One traveller caught the coronavirus half an hour after the initial COVID-19 carrier got off, according to the scientists.
The study also found the coronavirus can last for days on a surface, particularly in warmer temperatures, on plastic, fabric and metal.