TABLE 3.
Pairwise comparison of virus isolates grown from a sterile site with isolates grown from nonsterile sites in the same patienta
| Result | Finding | No. (%) of swabs testing positive from:
|
||
|---|---|---|---|---|
| Throat (n = 337) | Rectum (n = 342) | Ulcer (n = 208) | ||
| Concordance | Same virus isolated as vesicle swab | 101 (30) | 48 (14) | 29 (14) |
| No virus isolated from either swab | 111 (33) | 139 (41) | 83 (40) | |
| Total | 212 (63) | 187 (55) | 112 (54) | |
| Discordance | Different virus isolated compared with vesicle swab | 11 (3) | 12 (4) | 4 (2) |
| Vesicle swab negative but sample positive | 65 (19) | 37 (11) | 19 (9) | |
| Vesicle swab positive but sample negative | 49 (15) | 106 (31) | 73 (35) | |
| Total | 125 (37) | 155 (45) | 96 (46) | |
a
Vesicles were the sterile site; throat, rectum, and ulcers were the nonsterile sites. Many patients had swabs from multiple sites. The total number of patients represented here is 349.