Ключевые слова: air, air pollution, alert, attention, bacteria, biohazard, building, business, caution, contagious, cough, danger, death, diagnosis, disease, emergency, epidemic, fever, germs, global, health, humans, illness, infect, infection, internet, lifestyle, medical, microbiology, mobile, office, pandemic, pathogen, pathogenic, people, phone, prevention, protection, quarantine, safety, security, sick, sickness, smartphone, technology, vaccine, virology, virus, woman,