Neisseria infection is characteristic of deficiency of:
Ans. D. C5* The best-documented genetic association with meningococcal disease is complement deficiency, chiefly of the terminal complement components (C5-9), properdin, or factor D; such a deficiency increases the risk of disease by up to 600- fold and may result in recurrent attacks.* Complement components are believed to be important for the bactericidal activity of serum, which is considered the principal mechanism of immunity against invasive meningococcal disease.
General
C2
C3
C4
C5
C5