Several Individuals in a Florida Neighborhood Develop a Febrile Illness

Several individuals in a Florida neighborhood develop a febrile illness during the summer.  Most of them experience abrupt-onset fever, headache, confusion, and lethargy.  Some patients also develop tremors, seizures, and focal motor or sensory deficits.  Physical examination shows signs of meningeal irritation and altered mental status.  Cerebrospinal fluid evaluation reveals lymphocytic pleocytosis with no organisms seen on Gram stain.  Brain imaging shows no abnormalities.  Which of the following would be most helpful in controlling this disease outbreak?

A) Control of vector arthropods
B) Decontamination of bat droppings
C) Isolation of infected individuals
D) Purification of drinking water
E) Vaccination of all individuals

Correct Answer:

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