Volume 8, Number 7—July 2002
Research
Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
Ronald J. Ash*
, Brena Mauck*, and Melissa Morgan*
, Brena Mauck*, and Melissa Morgan*
Table 1
Ampicillin-resistant bacteria, U.S. rivers
| River | Na | log10 CFU/mLb | % ampicillin-resistant |
|---|---|---|---|
| Arkansas-Little Rock, AR | 2 | 3.09–3.37 (3.25) | 6.6–21.0 |
| Arkansas-Witchita, KS | 4 | 3.09–4.05 (3.66) | 10.4–25.7 |
| Canadian-Oklahoma City, OK | 2 | 3.03–4.36 (4.08) | 22.6–24.1 |
| Chattahoochee-Atlanta, GA | 2 | 2.32–2.66 (2.52) | 34.5–38.4 |
| Chicago-Chicago, IL | 1 | 4.21 | 26.9 |
| Colorado-Glenwood Springs, CO | 1 | 2.56 | 59.2 |
| Cuyahoga-Cleveland, OH | 1 | 3.45 | 26.4 |
| Des Moines-Des Moines, IA | 3 | 2.66–3.81 (3.40) | 13.7–34 |
| Hudson-New York, NY | 3 | 2.94–4.06 (3.80) | 10.1–36.6 |
| Kansas-Topeka, KS | 24 | 2.86–4.15 (3.67) | 4.9–52.5 |
| Mississippi-New Orleans, LA | 1 | 3.09 | 5.9 |
| Mississippi-Minneapolis, MN | 2 | 2.89–3.22 (3.09) | 19.7–23.7 |
| Mississippi-St. Louis, MO | 4 | 3.93–4.61 (4.31) | 6.7–73.0 |
| Missouri-Parkville, MO | 7 | 3.28–4.70 (4.08) | 6.1–21.5 |
| Ohio-Cincinnati, OH | 6 | 2.86–4.80 (4.15) | 20.0–53.0 |
| Ohio-Louisville, KY | 4 | 2.59–3.70 (3.22) | 12.4–20.0 |
| Ohio-Pittsburgh, PA | 1 | 2.53 | 15.7 |
| Ohio-Wheeling, WV | 1 | 2.76 | 32.0 |
| Platte-Grand Island, NE | 3 | 3.20–3.56 (3.32) | 3.5–33.9 |
| Scioto-Columbus, OH | 1 | 2.80 | 3.9 |
| Wabash-Terre Haute, IN | 3 | 2.81–3.19 (3.04) | 17.0–25.0 |
| White-Indianapolis, IN | 1 | 4.36 | 22.5 |
aRefers to the number of visits to each site.
bTotal CFU isolated on Luria-Bertani medium; range and mean (in parentheses) are given for sites sampled more than once.
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