Volume 18, Number 4—April 2012
Research
Comparison of Escherichia coli ST131 Pulsotypes, by Epidemiologic Traits, 1967–2009
Table 5
Segregation, by ecologic source, of multiple-isolate pulsotypes and of Escherichia coli ST131 isolates from the pulsotypes, 1967–2009*
Ecologic source | No. pulsotypes, n = 65 | Total no. isolates, n = 474 | No. isolates |
No. pulsotypes comprising isolates |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HU, n = 412 | CA, n = 21 | FA, n = 28 | OA, n = 7 | Food, n = 4 | Water, n = 2 | HU, n = 57 | CA, n = 8 | FA, n = 13 | OA, n = 2 | Food, n = 2 | ||||
HU | 57 | 453 | NA | 19 | 12† | 7 | 1† | 2 | NA | |||||
CA | 8 | 216 | 178‡ | NA | 8 | 6§ | 3 | 0 | 7 | NA | ||||
FA | 13 | 43 | 7† | 3 | NA | 1 | 4† | 0 | 5† | 2 | NA. | |||
OA | 2 | 140 | 118 | 13‡ | 1† | NA | 1 | 0 | 2 | 1 | 1 | NA | ||
Food | 2 | 11 | 1† | 2 | 3§ | 1 | NA | 0 | 1 | 1 | 2§ | 1 | NA | |
Water | 2 | 84 | 82† | 0§ | 0‡ | 0 | 0 | NA | 2 | 0 | 0 | 0 | 0 |
*Blank spaces indicate duplicated comparisons (mirror image of matrix). Boldface indicates significant associations; boldface italics indicate negative associations. ST, sequence type; HU, human; CA, companion animal; FA, food animal; OA, other animal; NA, not applicable.
†p<0.001 for indicated source vs. all other sources (Fisher exact test).
‡p<0.01 for indicated source vs. all other sources (Fisher exact test).
§p<0.05 for indicated source vs. all other sources (Fisher exact test).
1MASTER (Macrorestriction Analysis of ST131 for Epidemiologic Research) Investigators who contributed data are listed at the end of this article.