Ключевые слова: 19, ad, advertisement, alert, announcement, biohazard, blue, concept, dangerous, disease, doctor, door, emergency, epidemic, family, flu, glove, hand, health, heart, home, house, infection, intimation, isolation, keep, medical, medicine, message, notice, notification, pandemic, placard, pneumonia, poster, prevention, protection, quarantine, rubber, safe, safety, self, stay, sticker, virus, yourself,