TABLE 1.
Comparison of positive viral isolations in inpatients and outpatients
| Virus | No. (%) of positive isolations
|
Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Inpatients
|
Outpatients
|
||||||||
| 1997 | 1998 | 1999 | Total | 1997 | 1998 | 1999 | Total | ||
| Influenza A virus | 3 (0.9) | 1 (0.1) | 46 (4.8) | 50 (2.4) | 88 (9.7) | 73 (4.3) | 173 (7.5) | 334 (6.8) | 384 (5.5) |
| Influenza B virus | 0 | 3 (0.4) | 21 (2.2) | 24 (1.2) | 61 (6.7) | 6 (0.4) | 90 (3.9) | 157 (3.2) | 181 (2.6) |
| Parainfluenza virus 1 | 2 (0.6) | 0 | 1 (0.1) | 3 (0.1) | 14 (1.5) | 15 (0.9) | 21 (0.9) | 50 (1.0) | 53 (0.8) |
| Parainfluenza virus 2 | 0 | 3 (0.4) | 0 | 3 (0.1) | 0 | 16 (0.9) | 3 (0.1) | 19 (0.4) | 22 (0.3) |
| Parainfluenza virus 3 | 2 (0.6) | 2 (0.3) | 2 (0.2) | 6 (0.3) | 10 (1.1) | 22 (1.3) | 24 (1.0) | 56 (1.1) | 62 (0.9) |
| Adenovirus | 14 (4.1) | 17 (2.2) | 38 (4.0) | 69 (3.3) | 61 (6.7) | 64 (3.8) | 83 (3.6) | 208 (4.2) | 277 (4.0) |
| RSV | 23 (6.8) | 36 (4.6) | 33 (3.5) | 92 (4.4) | 2 (0.2) | 15 (0.9) | 11 (0.5) | 28 (0.6) | 120 (1.7) |
| Enterovirus | 9 (2.6) | 99 (12.6) | 105 (11.0) | 213 (10.3) | 44 (4.8) | 154 (9.1) | 478 (20.8) | 676 (13.8) | 889 (12.7) |
| HSV-1 | 4 (1.2) | 30 (3.8) | 29 (3.0) | 63 (3.0) | 17 (1.9) | 110 (6.5) | 117 (5.1) | 244 (5.0) | 307 (4.4) |
| Total no. positive/ no. studied (% positive) | 56/340 (16.8) | 188/786 (23.9) | 271/951 (28.4) | 515/2,077 (24.8) | 287/910 (31.5) | 460/1,699 (27.1) | 972/2,300 (42.3) | 1,719/4,909 (35.0) | 2,234a/6,986 (32.0) |
a
Among 2,234 patients, 61 patients (8 inpatients and 53 outpatients) had multiple viral infections.