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Ampicillin-resistant Listeria monocytogenes meningitis in a previously healthy 14-year-old athlete.

We report a case of ampicillinresistant Listeria monocytogenes meningitis in a previously healthy 14-year-old athlete. Listeria monocytogenes usually occurs as a purulent disease of the CNS. Seldom is any obvious source of infection discovered, but susceptibility to the organism is noted in the very young or old, the immunocompromised, and those afflicted with chronic disease. 1 Varying antibiotic susceptibility of L monocytogenes is commonly reported, but in some cases may be due to different laboratory techniques. 2 Ampicillin has been suggested as the drug of choice for treatment of L monocytogenes infection. 1 REPORT OF A CASE A 14-year-old boy who was a high school wrestler with no health problems was admitted to another hospital on March 1, 1983, after a four-day history of progressively increasing headache, fever, nausea, and vomiting. Nuchal rigidity was present. Results of a lumbar puncture disclosed the following values: RBCs, 959/cu mm polymorphonuclear cells, 961/cu