Volume 11, Number 7—July 2005
Dispatch
Caliciviruses and Foodborne Gastroenteritis, Chile
Table 1
Proportion of acute diarrhea outbreaks associated with a bacterial enteropathogens or a human calicivirus (HuCV) and number of persons affected during the HuCV outbreaks
| Year | No. outbreaks positive*/no. tested |
No. affected in HuCV outbreaks |
|||
|---|---|---|---|---|---|
| Bacteria† | % | HuCVs | % | Range (median) | |
| 2000 | 8/13 | 61 | 4/12 | 33 | 3–28 (4) |
| 2001 | 11/32 | 34 | 6/18 | 33 | 2–54 (5) |
| 2002 | 6/34 | 18 | 14/22 | 64 | 2–99 (5) |
| 2003‡ | 1/3 | 33 | 1/3 | 33 | 5 |
| Total | 26/82 | 32 | 25/55§ | 45 | 2–99 (5) |
*An outbreak was associated with a given pathogen if ≥1 sample was positive.
†Bacteria isolated included: enteropathogenic Escherichia coli (EPEC) (2), enterotoxigenic E. coli (ETEC) (3), enterohemorrhagic E. coli (3), EPEC + ETEC (1), Salmonella sp (12), Shigella sp (2), Staphylococcus aureus (3).
‡January 1–10, 2003.
§In 1 outbreak, ETEC and EPEC and in another, Shiga toxin–producing E. coli, were concomitantly isolated with HuCV. In 1 additional outbreak the only pathogens simultaneously detected in 1 patient were rotavirus and adenovirus by enzyme-linked immunosorbent assay.
