Neisseria meningitidis (Gram-negative cocci) life threatening cause of Membrane_Attack_Complex_(Terminal_Complement_Complex_C5b-9)sepsis and bacterial meningitis.

Classically, individuals who lack terminal complement proteins (C5-C9) cannot form the membrane attack complex (MAC), which is needed for bacterial lysis of this encapsulated pathogen (can lead to a 1000- to 10,000-fold increased risk of meningococcal disease). More information here.

REFERENCES

  1. Figueroa, J.E., and P. Densen. 1991. Infectious diseases associated with complement deficiencies. Clin. Microbiol. Rev. 4:359–395.
  2. Infectious diseases associated with complement deficiencies. Figueroa JE, Densen P. Clin Microbiol Rev. 1991 Jul; 4(3):359-95.
  3. Rosa D.D., Pasqualotto A.C., de Quadros M., Prezzi S.H. Deficiency of the eighth component of complement associated with recurrent meningococcal meningitis—case report and literature review. Braz J Infect Dis. 2004;8(August (4)):328–330.

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