Table 2.
Enteric Bacterial Pathogens Isolated From Patients at an HMO Serving an Urban Geographical Area (Laboratory A), Minnesota, 1996–2006
| 1996 (n = 1905) | 1997 (n = 2048) | 1998 (n = 2243) | 1999 (n = 1972) | 2000 (n = 2432) | 2001 (n = 2114) | 2002 (n = 1997) | 2003 (n = 1667) | 2004 (n = 1589) | 2005 (n = 1722) | 2006 (n = 2281) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pathogen | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) |
| Campylobacter | 52 (2.7) | 70 (3.4) | 74 (3.3) | 34 (1.7) | 79 (3.2) | 60 (2.8) | 58 (2.9) | 39 (2.3) | 34 (2.1) | 45 (2.6) | 41 (1.8) |
| Salmonellaa | 28 (1.5) | 38 (1.9) | 27 (1.2) | 20 (1.0) | 22 (0.9) | 27 (1.3) | 12 (0.6) | 16 (1.0) | 23 (1.4) | 17 (1.0) | 34 (1.5) |
| Shigella | 7 (0.4) | 11 (0.5) | 17 (0.8) | 23 (1.2) | 84 (3.5) | 19 (0.9) | 24 (1.2) | 2 (0.1) | 6 (0.4) | 3 (0.2) | 27 (1.2) |
| Escherichia coli O157:H7 | 8 (0.4) | 8 (0.4) | 3 (0.1) | 9 (0.5) | 10 (0.4) | 7 (0.3) | 2 (0.1) | 1 (0.06) | 0 (0) | 6 (0.3) | 3 (0.1) |
| E. coli O157:NM | – | 1 (0.05) | – | – | 1 (0.04) | – | – | – | – | – | – |
| Other STECb | 5 (0.3) | 2 (0.1) | 11 (0.5) | 4 (0.2) | 19 (0.8) | 7 (0.3) | 10 (0.5) | 4 (0.2) | 2 (0.1) | 11 (0.6) | 13 (0.6) |
| Stx-positive; not isolated | 5 (0.3) | 1 (0.05) | 5 (0.2) | 4 (0.2) | 3 (0.1) | 3 (0.1) | 3 (0.2) | 3 (0.2) | 2 (0.1) | 11 (0.6) | 8 (0.4) |
| Enterotoxigenic E. colic | – | – | – | – | 40 (1.6) | 42 (2.0) | 36 (1.8) | 32 (1.9) | 31 (2.0) | 39 (2.3) | 36 (1.6) |
| Aeromonas spp | 1 | – | – | – | – | – | – | – | – | – | – |
| Plesiomonas shigelloides | – | 1 | – | – | – | – | – | – | – | – | – |
| Vibrio hollisae | – | – | 2 | – | – | – | – | – | – | – | – |
| Vibrio parahaemolyticus | – | 1 | – | – | – | – | – | 1 | – | 1 (0.06) | 0 (0.0) |
| Enteropathogenic E. coli | – | – | – | – | – | – | – | – | – | 2 (0.1) | – |
| Yersinia | – | – | – | – | 1 | – | – | – | 1 (0.1) | 1 (0.06) | – |
| No bacterial pathogens | 1799 (94.4) | 1915 (93.5) | 2104 (93.8) | 1978 (95.2) | 2173 (89.4) | 1949 (92.2) | 1852 (92.7) | 1569 (94.1) | 1490 (93.8) | 1586 (92.1) | 2119 (92.9) |
| Total | 1905 (100) | 2048 (100) | 2243 (100) | 1972 (100) | 2432 (100) | 2114 (100) | 1997 (100) | 1667 (100) | 1589 (100) | 1722 (100) | 2281 (100) |
Abbreviations: ETEC, enterotoxigenic E. coli; HMO, health maintenance organization; STEC, Shiga toxin-producing E. coli.
a Salmonella serotypes: Typhimurium, 68 (26%); Enteritidis, 47 (18%); Newport, 16 (6%); Typhimurium var. Copenhagen, 13 (5%); Heidelberg, 13 (5%); other, 107 (41%).
b STEC serogroups: O26, 18 (20%); O103, 18 (20%); O111, 10 (11%); O145, 4 (5%); 20 other serogroups, rough or undetermined, 37 (43%).
c ETEC serogroups: O25, 22 (9%); O6, 18 (7%); O27, 14 (5%); other, 60 (23%); not serotyped, 83 (32%); not isolated, 59 (23%). ETEC testing began in 2000.