Table 1:
Viral prevalence by clinical presentation and age group, Kaiser Permanente Northwest, July 2014–June 2016
| Diarrhea & Vomiting | Diarrhea Only | Vomiting Only | |
|---|---|---|---|
| Under 5 years of age | |||
| N | 437 | 262 | 36 |
| Pathogen Results | |||
| Norovirus | 125 (28.6) | 24 (9.2) | 13 (36.1) |
| Rotavirus* | 13 (3.0) | 0 (0.0) | 0 (0.0) |
| Sapovirus | 52 (11.9) | 15 (5.7) | 4 (11.1) |
| Astrovirus | 30 (6.9) | 11 (4.2) | 0 (0.0) |
| Mixed viral | 9 (2.1) | 4 (1.5) | 0 (0.0) |
| No virus detected in study testing | 208 (47.6) | 208 (79.4) | 19 (52.8) |
| 5 to 74 years | |||
| N | 627 | 760 | 41 |
| Pathogen Results | |||
| Norovirus | 129 (20.6) | 28 (3.7) | 13 (31.7) |
| Rotavirus* | 19 (3.0) | 1 (0.1) | 0 (0.0) |
| Sapovirus | 41 (6.5) | 25 (3.3) | 5 (12.2) |
| Astrovirus | 15 (2.4) | 26 (3.4) | 0 (0.0) |
| Mixed viral | 5 (0.8) | 3 (0.4) | 0 (0.0) |
| No virus detected in study testing | 418 (66.7) | 677 (89.1) | 23 (56.1) |
| 75 years and up | |||
| N | 130 | 327 | 9 |
| Pathogen Results | |||
| Norovirus | 21 (16.2) | 10 (3.1) | 4 (44.4) |
| Rotavirus* | 2 (1.5) | 0 (0.0) | 0 (0.0) |
| Sapovirus | 9 (6.9) | 13 (4.0) | 0 (0.0) |
| Astrovirus | 2 (1.5) | 4 (1.2) | 0 (0.0) |
| Mixed viral | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| No virus detected in study testing | 96 (73.8) | 300 (91.7) | 5 (55.6) |
*
RT-PCR and EIA positive.