Ключевые слова: 19, antibiotics, b11529, b1617, ba2, background, concept, disease, epidemic, flu, flurona, health, illness, increasing, infect, infection, inject, laboratory, mask, medical, medication, medicine, new, new strain, omicron, omicron variant, pandemic, pneumonia, quarantine, red, risk, sars, sarscov2, science, travel, vaccine, variant, viral, virology, virus, who,