The Prague Public Transport Company (DPP), in cooperation with the Institute of Physics of the Academy of Sciences, will detect the presence of the coronavirus in public transport. DPP will take some 500 samples from surfaces and the air in trams, buses, and metro trains in April, using special biosensors and air-sampling devices. The test results will be made available at the end of May and the beginning of June at the latest. Foreign studies have proven that public transport is not a source of the coronavirus infection spread and the probability of getting infected there is low, DPP general director Petr Witowski said, adding that as the Czech Republic has conducted no studies on Covid spread in public transport, DPP conducts its own. During the pandemic, the company intensified the cleaning of transport means with ozone and special disinfectants and the installation of 120 hand-sanitizer dispensers. Respirators or nano masks are now obligatory in all public transport.