Ключевые слова: biohazard, chemicals, contamination, control, corona, corona virus, coronavirus, cough infogaphics, covid, covid19, danger, disease, disinfect, disinfectant, disinfection, employee, epidemic, facility, flu symptoms, hazardous, health care, industrial, industry 4, infection, machine, man, mask, medicine, mers, outdoors, pandemic, people, prevent the flu, prevention, protection, protective, quarantine, respiratory syndrome, respiratory tract infections, respiratory virus, safety, sanitize, standing, sterile, sterilize, sterilizing, suit, uniform, virus, worker,