Study reveals chances of catching Covid-19 on train

Passengers travelling in seats adjacent to a sufferer had the highest chance of being infected
AFP via Getty Images
Ellena Cruse31 July 2020

Train passengers could be infected by coronavirus if they sit within 2.5 metres of someone carrying the disease on a two-hour journey, according to new research.

Scientists from the University of Southampton’s WorldPop project also found that more than one-metre social distancing is required to be safe when travelling for one hour.

The study was based on high-speed routes in China and conducted in collaboration with several organisations from the country, including the Chinese Academy of Sciences.

Analysis covering the spread of the virus between December 19 and March 6 found that an average of 0.32 per cent of passengers sitting within three seats across and five in front or behind an infected person caught the disease. Passengers travelling in seats adjacent to a sufferer had the highest chance of being infected, at 3.5 per cent and the transmission rate for those on the same row was 1.5 per cent.

The research was published in the journal Clinical Infectious Diseases and lead investigator Dr Shengjie Lai said: “Our study shows that although there is an increased risk of Covid-19 transmission on trains, a person’s seat location and travel time in relation to an infectious person can make a big difference as to whether it is passed on.

“The findings suggest that during the Covid-19 epidemic it is important to reduce the density of passengers and promote personal hygiene measures, the use of face coverings, and possibly carry-out temperature checks before boarding.”

A cleaner sanitises a tube train pole
PA

WorldPop director Professor Andy Tatem added: “Our research is the first to quantify the individual risk of Covid-19 transmission on public transport based on data from epidemiological investigations of disease cases and their close contacts on high-speed trains.

“It shows that the transmission risk not only relates to the distance from an infected person, but also the time in their presence.

“We hope it can help to inform authorities globally about measures needed to guard against the virus and in turn help to reduce its spread.”

Department for Transport guidance for public transport users states that if they cannot stay two-metres apart from others, they should maintain a one-metre gap “where possible” and take “suitable precautions” such as washing hands regularly and touching as few surfaces as possible.

Face coverings are mandatory across all public transport in the UK.

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