Ключевые слова: bacterium, cold and flu, coronavirus, covid 19 sniffing dog, covid19, covid19 vaccine, epidemic, healthcare and medicine, illness, illness prevention, illustration, infectious disease, medicine, pandemic illness, people, pneumonia, protection, quarantine, sarscov2 ba2 variant, sarscov2 xbb 116 variant, sarscov2 xbb 15 variant, sarscov2 xbb variant, sarscov2 xe variant, vaccination, viral infection, virus,