Pontiac Fever: Non-Pneumonic Form of Legionellosis

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  • KOHNO Shigeru
    The Second Department of Internal Medicine, Nagasaki University School of Medicine

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  • First Sporadic Cases of Non-pneumonic Legionellosis,Pontiac Fever in Japan

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Pontiac fever has rarely been found in sporadic cases. Here, we report the first sporadic cases of non-pneumonic legionellosis, Pontiac fever in Japan. Case 1. A 53-year-old man with spinocerebellar degeneration was presented to our hospital. He had an acute onset of high fever and consciousness disturbance. A chest X-ray film on admission was normal, but transient bilateral pleural effusions were revealed on hospital day 14. Case 2. A 77-year-old woman with gastric ulcer was presented to our hospital. She had an acute onset of high fever. A chest X-ray film on admission was normal, but transient bilateral pleural effusions were revealed on hospital day 7. High fever, resistant to β-lactam antibiotics, continued in both cases. Both had serologic confirmation of legionellosis by indirect fluorescent antibody assay for Legionella pneumophila without seroconversion for Mycoplasma pneumoniae, and Chlamydia pneumoniae, and had a good prognosis. Both were thought to be sporadic community-acquired cases rather than epidemics.<br>(Internal Medicine 37: 1068-1071, 1998)

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  • Internal Medicine

    Internal Medicine 37 (12), 1003-1004, 1998

    The Japanese Society of Internal Medicine

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