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Table 2 Number of patients (%) showing positive antibody response to C. parvum crude soluble antigen (CCA)

From: Serum immunoglobulin G, M and A response to Cryptosporidium parvum in Cryptosporidium-HIV co-infected patients

Gp.   Number studied Number positive
    IgG IgM IgA
I HIV+Crypto+ 11 11 (100) 2 (18.2) 7 (63.6)
II HIV+Crypto- 20 Nil Nil 4 (20)
III HIV-Crypto+ 10 10 (100) 2 (20) 5 (50)
IIIa HIV-Crypto+ 4 4 (100) 1 (25) 1 (25)
IIIb HIV-Crypto+ 6 6 (100) 1 (16.7) 4 (66.7)
IV HIV-Crypto- 20 Nil Nil 2 (10)
V Other parasitic diseases 25 3 (12) 2 (8) 2 (8)
  Sensitivity (%)   100 19 57.1
  Specificity (%)   95.4 97 87.7
  I vs II   <0.0001 NS <0.05
  I vs IV   <0.0001 NS <0.01
P I vs V   <0.0001 NS <0.01
  II vs III   <0.0001 NS <0.05
  III vs IV   <0.0001 NS <0.05
  III vs V   <0.0001 NS <0.05