A 30-year-old female was hospitalized after she experienced convulsions. On examination, she was alert and oriented and complained of a fever, headache, and stiff neck. Her symptoms could be due to all of the following except?
1) Clostridium botulinum
2) Listeria monocytogenes
3) Naegleria fowleri
4) Streptococcus pneumoniae
5) None of the above