They find Coronavirus on disinfected surfaces. Recent investigations, carried out by the Murcian Institute for Biosanitary Research (IMIB), have found SARS CoV-2 viruses on glass and polypropylene surfaces of the Virgen de la Arrixaca hospital in Murcia. These investigations demonstrate the importance of disinfecting both surfaces and air, which is why COUNTERFOG® is presented as the effective alternative to conventional disinfection methods.
Link to article:

https://www.heraldo.es/noticias/salud/2020/10/20/hallan-coronavirus-en-superficies-de-habitaciones-hospital-a-pesar-desinfeccion-1401021.html