The inclusion criteria for the study were patients diagnosed with EOM who had results of serological tests for both A. cantonensis and G. spinigerum. EOM was diagnosed if more than 10% of CSF eosinophils of the total
CSF white blood cell count and if CSF staining for organisms, cryptococcal antigen testing and cultures was negative (Sawanyawisuth & Sawanyawisuth 2008)