Brucella meningitis.

A 36-year-old Hispanic man came into the emergency department with nonspecific symptoms (headache, myalgias, low-grade temperature, and low white blood cell count) and was diagnosed with brucella meningitis. The patient said he had consumed unpasteurized goat's milk and cheese in Mexico, and had been treated 3 months previously for a febrile illness diagnosed as Malta fever (brucellosis). Cultures of both the blood and cerebrospinal fluid yielded Brucella melitensis. Blood agglutinin results for B abortus were positive at greater than 1:160. Unpasteurized milk and cheese are consumed in many countries where brucellosis is endemic. Emergency physicians are occasionally confronted with patients from developing countries with diseases that require rapid and specific diagnosis for optimal treatment.