Volume 19, Number 8—August 2013
Dispatch
Acute Gastroenteritis Surveillance through the National Outbreak Reporting System, United States
Aron J. Hall
, Mary E. Wikswo, Karunya Manikonda, Virginia A. Roberts, Jonathan S. Yoder, and L. Hannah Gould
, Mary E. Wikswo, Karunya Manikonda, Virginia A. Roberts, Jonathan S. Yoder, and L. Hannah Gould
Table 2
Primary transmission mode and exposure setting of acute gastroenteritis outbreaks, by etiologic agent, National Outbreak Reporting System, United States, 2009–2010*
| Outbreak characteristic | No. (%) outbreaks |
||||||
|---|---|---|---|---|---|---|---|
| Norovirus, n = 1,908 | Salmonella spp., n = 355 | Shigella spp., n = 109 | STEC, n = 101 | Other, n = 379† | Unknown, n = 1,524 | Total, N = 4,376 | |
| Primary transmission mode | |||||||
| Person to person | 1,261 (66.1) | 17 (4.8) | 86 (78.9) | 11 (10.9) | 47 (12.4) | 849 (55.7) | 2,271 (51.9) |
| Foodborne | 494 (25.9) | 254 (71.5) | 8 (7.3) | 64 (63.4) | 220 (58.0) | 473 (31.0) | 1,513 (34.6) |
| Waterborne | 4 (0.2) | 0 | 2 (1.8) | 6 (5.9) | 51 (13.5) | 2 (0.1) | 65 (1.5) |
| Animal contact | 0 | 26 (7.3) | 0 | 5 (5.0) | 12 (3.2) | 1 (0.1) | 44 (1.0) |
| Environmental contamination | 5 (0.3) | 2 (0.6) | 1 (0.9) | 0 | 0 | 1 (0.1) | 9 (0.2) |
| Unknown |
144 (7.5) |
56 (15.8) |
12 (11.0) |
15 (14.9) |
49 (12.9) |
198 (13.0) |
474 (10.8) |
| Exposure setting‡ | |||||||
| Health care facility | 932 (48.8) | 5 (1.4) | 0 | 0 | 25 (6.6) | 537 (35.2) | 1,499 (34.3) |
| Restaurant or banquet facility | 287 (15.0) | 69 (19.4) | 5 (4.6) | 12 (11.9) | 77 (20.3) | 207 (13.6) | 657 (15.0) |
| School or day-care facility | 98 (5.1) | 14 (3.9) | 50 (45.9) | 6 (5.9) | 15 (4.0) | 107 (7.0) | 290 (6.6) |
| Private residence | 31 (1.6) | 62 (17.5) | 4 (3.7) | 28 (27.7) | 60 (15.8) | 42 (2.8) | 227 (5.2) |
| Other single setting | 114 (6.0) | 42 (11.8) | 9 (8.3) | 15 (14.9) | 101 (26.6) | 98 (6.4) | 379 (8.7) |
| Multiple | 33 (1.7) | 19 (5.4) | 13 (11.9) | 10 (9.9) | 10 (2.6) | 21 (1.4) | 106 (2.4) |
| Not reported | 264 (13.8) | 86 (24.2) | 15 (13.8) | 15 (14.9) | 42 (11.8) | 313 (20.5) | 735 (16.8) |
| Not collected§ | 149 (7.8) | 58 (16.3) | 13 (11.9) | 15 (14.9) | 49 (12.9) | 199 (13.1) | 483 (11.0) |
*Data include both suspected and confirmed etiologies. STEC, Shiga toxin-producing Escherichia coli.
†Includes outbreaks caused by a single etiologic agent other than norovirus, Salmonella spp., Shigella spp., and STEC or by multiple etiologic agents, as listed in Table 1.
‡Data on specific settings are restricted to outbreaks with a single exposure setting; for foodborne outbreaks, setting refers to the setting where implicated food was consumed.
§The setting was systematically not collected for outbreaks caused by environmental contamination or unknown transmission mode.
Page created: July 19, 2013
Page updated: July 19, 2013
Page reviewed: July 19, 2013
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