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Volume 10, Number 6—June 2004

Research

Antimicrobial Resistance among Campylobacter Strains, United States, 1997–2001

Amita Gupta*Comments to Author , Jennifer M. Nelson*, Timothy J. Barrett*, Robert V. Tauxe*, Shannon P. Rossiter*, Cindy R. Friedman*, Kevin W. Joyce*, Kirk E. Smith†, Timothy F. Jones‡, Marguerit A. Hawkins§, Beletshachew Shiferaw¶, James L. Beebe#, Duc J. Vugia**, Terry Rabatsky-Ehr††, James A. Benson‡‡, Timothy P. Root§§, Frederick J. Angulo*, and for the NARMS Working Group
Author affiliations: *Centers for Disease Control, Atlanta, Georgia, USA; †Minnesota Department of Health, St. Paul, Minnesota, USA; ‡Tennessee Department of Health, Nashville, Tennessee, USA; §Maryland Department of Health and Mental Hygiene, Baltimore, Maryland, USA; ¶Oregon Department of Human Services, Portland, Oregon, USA; #Colorado Department of Public Health & Environment, Denver, Colorado, USA; **California Department of Health Services, Sacramento, California, USA; ††Connecticut Department of Public Health, Hartford, Connecticut, USA; ‡‡Georgia Department of Human Services, Atlanta, Georgia, USA; §§New York State Department of Health, Albany, New York, USA

Main Article

Table 2

Antimicrobial resistance among human C. jejuni strains, 1990–2001

Antimicrobial % Resistant
1989-1990 (n = 286)a,b 1997 (n = 209) 1998 (n = 297) 1999 (n = 294) 2000 (n = 306) 2001 (n = 365) Total (n = 1,471)
Azithromycinc
1

1
3
2
2
2
chloramphenicol
0
1
1
0.3
0
0
0.3
Ciprofloxacin
0
12
14
18
14
18
16
Clindamycin
1
1
1
1
1
2
1
Erythromycin
1
1
2
2
1
2
2
Gentamicinc
0

0
0
0
0
0
nalidixic acid
1
13
16
20
16
19
17
Tetracycline 42 47 46 46 39 40 43

a1989–1990 U.S. sentinel county study used different sampling and laboratory methods (microbroth dilution testing) than NARMS (E-test). However, studies have concluded that broth microdilution and E-test give equivalent results for ciprofloxacin susceptibility testing of Campylobacter (44).
bIn 1989–1990 U.S. county study, only 285 isolates were tested for azithromycin and nalidixic acid susceptibility.
cFor azithromycin and gentamicin, only isolates received between 1998 and 2001 were tested (N = 1,262).

Main Article

1This isolate was reported to be ciprofloxacin resistant in reference

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