Two linked cases of legionellosis with an unusual industrial source.

To the Editor: A 23-year-old man presented to a Victorian hospital with a 4-day history of fever, rigors, confusion and malaise. A chest x-ray showed left lower-lobe pneumonia, and Legionella pneumophila serogroup 1 antigen was detected in his urine. No respiratory specimens were obtained. He recovered completely after treatment for community-acquired pneumonia, including intravenous ampicillin and oral roxithromycin, and returned to work 16 days after onset.