3848
Recurrent meningococcal meningitis with absence of the sixth component of complement : an evaluation of underlying immunologic mechanisms .
 meningococcal meningitis, absence of the sixth component of complement
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 meningococcal meningitis, absence of the sixth component of complement