Volume 7, Number 1—February 2001
Research
Gastroenteritis in Sentinel General Practices, the Netherlands
, Marion P.G. Koopmans*, Laetitia M. Kortbeek*, Nan J. van Leeuwen*, AAD I.M. Bartelds†, and Yvonne T.H.P. van Duynhoven*
Table 4
Microorganisms detected in patients and controls
| Patients (N=857) | Controls (N=574) | |||
|---|---|---|---|---|
| No. | % | No. | % | |
| Salmonella spp. | 33 | 3.9 | 1 | 0.2 |
| S. Enteritidis | 12 | 1.4 | 0 | 0.0 |
| S. Typhimurium | 11 | 1.3 | 1 | 0.2 |
| other Salmonellaea | 9 | 1.1 | 0 | 0.0 |
| Campylobacter spp. | 89 | 10.5 | 3 | 0.5 |
| C. jejuni | 77 | 9 | 3 | 0.5 |
| C. coli | 7 | 0.8 | 0 | 0.0 |
| other species | 5 | 0.6 | 0 | 0.0 |
| Yersinia spp. | 6 | 0.7 | 6 | 1.1 |
| Y. enterocoliticab | 5 | 0.6 | 5 | 0.9 |
| Y. frederikseniic | 1 | 0.1 | 1 | 0.2 |
| Shigella spp. | 1 | 0.1 | 0 | 0.0 |
| S. flexneri | 1 | 0.1 | 0 | 0.0 |
| VTECd | 4 | 0.5 | 3 | 0.6 |
| Rotavirus | 45 | 5.3 | 8 | 1.4 |
| Adenovirus | 19 | 2.2 | 2 | 0.4 |
| Astrovirus | 13 | 1.5 | 2 | 0.4 |
| Norwalk-like viruses | 43 | 5.0 | 6 | 1.1 |
| Sapporo-like virusese | 5 | 2.1 | 1 | 0.6 |
| Giardia lamblia | 46 | 5.4 | 19 | 3.3 |
| Entamoeba histolytica/dispar | 9 | 1.1 | 4 | 0.7 |
| Cryptosporidium | 18 | 2.1 | 1 | 0.2 |
| Cyclospora | 1 | 0.1 | 1 | 0.2 |
| (Possibly) nonpathogenic microorganisms | ||||
| Dientamoeba fragilis | 88 | 10.3 | 84 | 14.6 |
| Blastocystis hominis | 185 | 21.7 | 172 | 30.0 |
| Endolimax nana | 14 | 1.6 | 14 | 2.4 |
| Enteromonas hominis | 2 | 0.2 | 1 | 0.2 |
| Chilomastix mesnili | 1 | 0.1 | 0 | 0.0 |
| Entamoeba hartmanni | 0 | 0.0 | 2 | 0.4 |
| Enterobius vermicularis | 0 | 0.0 | 1 | 0.2 |
| Iodamoeba butschlii | 0 | 0.0 | 1 | 0.2 |
aS. Heidelberg, S. Thompson, S. Kottbus, S. Montevideo, S. Manhattan, S. Anatum, S. Arizona, Salmonella group B (not fully typeable).
bSerotypes of Y. enterocolitica in patients: O6,31 (biotype 1a), O6,30; O6,30 (biotype 1A), one not typeable, one not typed. In controls: two O4 (biotype 1A); O65 (biotype 1A), O7,8 (biotype 1A); one not typeable.
cSerotypes of Y. frederiksenii: O16a,58 (case); O16AB,29 (control).
dVTEC=verocytotoxin-producing Escherichia coli: positive for eae gene and genes for either SLT1 or SLT2. VTEC serotypes in cases: O157 K-H-, O98 K-, O145 K-, one not typeable. In controls: O26, O145 K-, one not typeable
eSapporo-like viruses have only been tested for the last study year (May 98-Apr 99; 240 cases and 160 controls). Genotypes in cases: 4 Sapporo, 1 London, genotype in control: Sapporo.