How to reduce the spread of the SARS-CoV-2 virus as much as possible? Experts from around the world are seeking the answer to this question with varying degrees of success. Amidst the peak of the pandemic, national lockdown and implementation of blanket measures, scientists from the Institute of Animal Physiology and Genetics CAS and Masaryk University in Brno, have proven that the SARS-CoV-2 virus did not occur in public areas where people obeyed the safety measures by wearing respirators and disinfecting their hands.