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Table 2 The most frequent conditions among 1742 overall category C episodes

From: AIDS-defining illnesses among patients with HIV in Singapore, 1985 to 2001: results from the Singapore HIV Observational Cohort Study (SHOCS)

Condition

Confirmed

Probable

New

Recurrent

Total (%)

Pneumocystis carinii pneumonia

251

196

399

28

437 (25.1%)

Mycobacterium tuberculosis

194

89

263

20

283 (16.2%)

Cytomegalovirus retinitis

0

166

166

NA1

166 (9.5%)

Candidiasis, esophageal or tracheobronchial

40

96

129

7

136 (7.8%)

Herpes simplex, chronic mucocutaneous

59

84

133

10

143 (8.2%)

Mycobacterium avium, disseminated

141

NA

138

3

141 (8.2%)

Cytomegalovirus disease

79

35

112

2

114 (6.5%)

Cryptococcosis, extrapulmonary

84

NA

78

6

84 (4.8%)

Toxoplasmosis of the brain

2

61

57

6

63 (3.6%)

Mycobacterium, species unidentified

1

33

34

0

34 (2.0%)

Kaposi's sarcoma

17

6

23

0

23 (1.3%)

Cryptosporidiosis, chronic intestinal

19

NA

18

1

19 (1.1%)

Lymphoma, primary cerebral

10

10

20

0

20 (1.1%)

Wasting syndrome of HIV

NA

16

16

0

16 (0.9%)

Encephalopathy, HIV-related

NA

10

10

0

10 (0.6%)

Pneumonia, recurrent bacterial

9

NA

8

1

9 (0.5%)

Burkitt's lymphoma

9

NA

9

0

9 (0.5%)

Progressive multifocal leukoencephalopathy

2

5

7

0

7 (0.4%)

Histoplasmosis, disseminated

6

NA

6

0

6 (0.3%)

Mycobacterium scrofulaceum, disseminated

5

NA

5

0

5 (0.3%)

Other2

16

1

17

0

17 (1.0%)

  1. 1Following an initial diagnosis of cytomegalovirus retinitis, recurrences were not recorded as additional episodes of category C disease. 2The category designated "other" includes conditions for which four cases or fewer were diagnosed.