According to the results of the PCR examination of the employees who complained, all the results are negative and do not confirm the hypothesis of mass infection with COVID-19. To date, experts are investigating the fact of food poisoning and assessing compliance with sanitary standards of the conditions of the contractor providing nutrition services. "From the side of the company on the fact of food poisoning an internal investigation has been initiated into the fact of food poisoning against the contractor supplying food to production units.