[Sporadic cases of Legionella pneumonia]

Clinicoroentgenological presentation of Legionella-induced pneumonia diagnosed in a pulmonological department of the Khabarovsk regional hospital is illustrated on 5 cases confirmed serologically. Sporadic legionellosis is characterized by: an acute onset simulating croupous pneumonia, a severe lingering course, ++semi-segmental type of infiltration, pleural involvement, drastic alterations of peripheral blood (leukocytosis shift to the left, accelerated ESR), resistance to penicillin, cephalosporin and aminoglycoside antibiotics in contract to erythromycin exhibiting a pronounced therapeutic effect.