Ключевые слова: alarm, bacteria, cell culture, contact infection, control, danger, deadly, doctor, drinking water, health, help, hospital, illness, infection, legionella, legionella problems, legionellosis, legionnaires disease, lethality, medicine, outbreak, pathogen, pneumonia, prevention, research, risk, sauna, shower ban, steam, steam bath, swimming pool, transmission, treatment, vaccination, warning, water, water filters, who,