Takeaway
Around a third of a group of people in Brazil with neurologic symptoms tested positive for a neuroinvasive arthropod-borne virus (arbovirus): five people tested positive for dengue virus and six tested positive for Chikungunya virus.
Why this matters
Molecular and immunologic tests of cerebrospinal fluid (CSF) and serum might be useful in supporting diagnosis of neurologic disorders caused by arbovirus in endemic areas.