Covid-19 positive samples had higher bacterial phylogenetic diversity in both human and surface samples and higher biomass in floor samples," the research added.The researchers informed that they collected 972 samples from hospitalised patients with Covid-19, their health care providers, and hospital surfaces before, during, and after admission.None of the healthcare workers caring for patients in the study tested positive for the virus, the research added.The study focused on one hospital, but the researchers expect they would find similar results in any hospital treating patients with coronavirus.Never miss a story!