FILE PHOTO: Passengers wearing protective masks amid the coronavirus disease (COVID-19) outbreak, ride a subway train in Tokyo, Japan, July 3, 2020. REUTERS/Kim Kyung-Hoon
TOKYO (Reuters) - Supercomputer-driven models simulated in Japan suggested that operating commuter trains with windows open and limiting the number of passengers may help reduce the risk of coronavirus infections, as scientists warn of airborne spread of the virus.
In an open letter published on Monday, 239 scientists in 32 countries outlined evidence that they say shows floating virus particles can infect people who breathe them in.
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