Table 1.
Incidence of infectious intestinal disease in community and reported to general practice by organism
| Community
|
General practice
|
No of community cases/ GP case (95% CI) | ||||
|---|---|---|---|---|---|---|
| No of cases* | Rate/1000 person years (95% CI) | No of cases | Rate/1000 person years (95% CI) | |||
| Bacteria: | ||||||
| Aeromonas spp | 46 | 12.4 (9.4 to 16.7) | 165 | 1.88 (1.48 to 2.37) | 6.7 (4.9 to 9.1) | |
| Bacillus spp (>104/g) | 0 | 0 | 4 | 0.05 (0.01 to 0.15) | — | |
| Campylobacter spp | 32 | 8.7 (6.1 to 12.3) | 354 | 4.14 (3.34 to 5.13) | 2.1 (1.5 to 3.0) | |
| Clostridium difficile cytotoxin | 6 | 1.6 (0.7 to 3.6) | 17 | 0.20 (0.12 to 0.31) | 8.0 (3.4 to 19.3) | |
| Clostridium perfringens enterotoxin | 9 | 2.4 (1.3 to 4.7) | 114 | 1.30 (1.04 to 1.68) | 1.9 (0.97 to 3.7) | |
| E coli O157 | 0 | 0 | 3 | 0.03 (0.01 to 0.11) | — | |
| E coli DNA probes: | ||||||
| Attaching and effacing | 20 | 5.4 (3.5 to 8.4) | 119 | 1.32 (1.10 to 1.62) | 4.1 (2.6 to 6.5) | |
| Diffusely adherent | 23 | 6.2 (4.2 to 9.4) | 103 | 1.18 (0.92 to 1.52) | 5.3 (3.4 to 8.2) | |
| Enteroaggregative | 18 | 4.9 (3.1 to 7.8) | 141 | 1.62 (1.30 to 2.03) | 3.0 (1.9 to 4.9) | |
| Enteroinvasive | 0 | 0 | 0 | 0 | — | |
| Enteropathogenic | 1 | 0.27 (0.04 to 1.9) | 4 | 0.05 (0.01 to 0.15) | 5.4 (0.8 to 55.7) | |
| Enterotoxigenic | 10 | 2.7 (1.5 to 5.0) | 52 | 0.59 (0.44 to 0.81) | 4.6 (2.4 to 8.9) | |
| Verocytotoxigenic (non-O157) | 3 | 0.82 (0.26 to 2.5) | 6 | 0.06 (0.02 to 0.17) | 13.4 (3.6 to 49.6) | |
| Salmonella spp | 8 | 2.2 (1.1 to 4.3) | 146 | 1.57 (1.19 to 2.06) | 1.4 (0.7 to 2.8) | |
| Shigella spp | 1 | 0.27 (0.04 to 1.9) | 23 | 0.27 (0.16 to 0.47) | 1.0 (0.13 to 7.3) | |
| Staphylococcus aureus (>106/g) | 1 | 0.27 (0.04 to 1.9) | 10 | 0.11 (0.05 to 0.23) | 2.5 (0.33 to 19.0) | |
| Vibrio spp | 0 | 0 | 1 | 0.01 (0.001 to 0.05) | — | |
| Yersinia spp | 25 | 6.8 (4.6 to 10.0) | 51 | 0.58 (0.42 to 0.88) | 11.7 (7.5 to 18.3) | |
| Protozoa: | ||||||
| Cryptosporidium parvum | 3 | 0.81 (0.26 to 2.5) | 39 | 0.43 (0.29 to 0.61) | 1.9 (0.60 to 6.1) | |
| Giardia intestinalis | 2 | 0.54 (0.14 to 2.2) | 28 | 0.28 (0.17 to 0.46) | 1.9 (0.46 to 7.9) | |
| Viruses: | ||||||
| Adenovirus group F | 11 | 3.0 (1.7 to 5.4) | 81 | 0.88 (0.69 to 1.13) | 3.4 (1.8 to 6.3) | |
| Astrovirus | 14 | 3.8 (2.3 to 6.4) | 77 | 0.86 (0.67 to 1.13) | 4.4 (2.5 to 7.6) | |
| Calicivirus | 8 | 2.2 (1.1 to 4.3) | 40 | 0.43 (0.27 to 0.60) | 5.1 (2.4 to 10.7) | |
| Rotavirus group A | 26 | 7.1 (4.8 to 10.4) | 208 | 2.30 (1.80 to 2.94) | 3.1 (2.1 to 4.6) | |
| Rotavirus group C | 2 | 0.54 (0.14 to 2.2) | 6 | 0.06 (0.02 to 0.17) | 8.9 (1.9 to 41.3) | |
| Small round structured viruses | 46 | 12.5 (9.4 to 16.7) | 169 | 1.99 (1.45 to 2.73) | 6.3 (4.6 to 8.6) | |
| No organism identified | 432 | 117.3 (107 to 129) | 1305 | 14.82 (12.78 to 17.20) | 7.9 (7.1 to 8.8) | |
| Total | 781 | 194 (181 to 208) | 8770† | 33.1 (29.4 to 37.5) | 5.8 (5.4 to 6.3) | |
*
Excluding cases where individual follow up was not known.
†
Total cases are greater than the sum of individual organisms due to cases for which a stool sample was not sent for testing. The general practice total includes cases from the enumeration arm, for which full stool testing was not carried out.