CFP and infectious meningitis: The presenting infectious features of 23 Slovenian patients with C2, C6, C6/7, C8, and properdin deficiencies were pneumonia (10 pt) sepsis (9 pt), purulent meningitis (7 pt), otitis (4 pt), cellulitis (2pt) and impetigo, sinusitis, and herpes zoster each in 1 patient (Table 1).