A RARE CASE OF EOSINOPHYLIC MENINGITIS BY PROBABLE ANGIOSTRONGYLUS CANTONENSIS, IN AN INFANT IN THE CITY OF MANAUS, IN THE AMAZON REGION OF BRAZIL

March 2021, a 12-month-old infant was brought to the HPS East Zone Little Jonh, in the capital of the State of Amazonas, Brazil, where she was admitted with fever, vomiting, intense prostration, little acceptance of breast milk, difficulty in walking, associated with left-facing strabismus and neck stiffness. At admission, the main author performed a lumbar puncture, and serological tests on the CSF to identify the causative agent were referred to a reference laboratory, which suggested that they be referred to the Central Laboratory - LACEN for suspecting the presence of agent Angionsytrongylis Canyonensis. Although, the identification of the causative agent is difficult to be detected and confirmed, this case report shows us the importance of the clinical laboratory in the identification of Eosinophilic Meningitis. The sub-detection of eosinophils in the CSF helps to underestimate the prevalence of eosinophilic meningitis. Thus, CSF analysis, slide preparation, sediment staining, as well as knowledge about the importance of adequate leukocyte differentiation in CSF are extremely important, to properly conduct the final diagnosis of the disease and prevent possible endemicity. The knowledge of this condition and early detection allows an effective therapy and improvement of public health actions. ? ?,