meningitidis strains; the lack of such reports suggests that complement deficiency
might be a predisposing factor, and all the reported isolates were determined to be capsule null locus (cnl) strains, which lacked the genetic islands encoding the entire capsule (5-7).
The possibility of complement deficiency was investigated and ruled out in two of two patients.
by complement deficiency, corticosteroid use, or HIV infection).
Complement deficiency states and meningococcal disease.