Microbiology A patient presents with a headache, high fever and meningismus. Within 3 days he becomes unconscious. Most probable causative agent A Naegleria fowleri B Acanthamoeba castellanii C Entamoeba histolytica D Trypanosoma cruzi 💡 Explanation A patient presents with a headache, high fever and meningismus. Within 3 days he becomes unconscious. Most probable causative agent ✓ Correct Answer: A. Naegleria fowleri