Primary Amoebic Meningoencephalitis: A Report of Two Cases and Antibiotic and Immunologic Studies

R. Stevens, Stanford T. Shulman, Thomas A. Lansen, M. J. Cichon, E. Willaert

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


In the summer of 1978, two children who had recently been swimming in freshwater lakes in Florida died from primary amoebic meningoencephalitis. Despite early and intensive treatment with amphotericin B, both patients died three to five days after the onset of illness. Amoebae were observed in wet preparations of cerebrospinal fluid and in sections of cerebral tissue and were identified as Naegleria fowleri by the indirect im-munofluorescent antibody technique. The amoebae were highly virulent in mice. The isolate of N. fowled was extremely sensitive in vitro to amphotericin B (minimal inhibitory concentration [MIC], 0.15 jug/ml), somewhat sensitive to miconazole (MIC, 25 /ig/ml), and resistant to rifampin (MIC, <100 jig/ml). Treatment with amphotericin B (7.5 mg/kg of body weight per day) administered intraperitoneally protected 60% of the mice. Lower doses of amphotericin B alone or in combination with miconazole (100 mg/kg) or rifampin (220 mg/kg) were not protective. These results suggest that amphotericin B remains the single effective agent in treatment of primary amoebic meningoencephalitis.

Original languageEnglish (US)
Pages (from-to)193-199
Number of pages7
JournalJournal of Infectious Diseases
Issue number2
StatePublished - Feb 1981

ASJC Scopus subject areas

  • Medicine(all)


Dive into the research topics of 'Primary Amoebic Meningoencephalitis: A Report of Two Cases and Antibiotic and Immunologic Studies'. Together they form a unique fingerprint.

Cite this