NARMS 2012 Human Isolates Final Report—Tables

These tables show the percentage of NARMS human isolates that are resistant to various antibiotics by year. Choose the pathogen and antibiotic to see how that bug-drug resistance has been trending since 1996.

The data are part of the latest report of NARMS[PDF – 88 pages]. The report from CDC NARMS compares resistance levels in human samples in 2012 to a baseline period of 2003-2007.

This tri-agency surveillance system has tracked antibiotic resistance in humans (CDC), retail meats (Food and Drug Administration), and food animals (U.S. Department of Agriculture) since 1996.

  • Each graph presents point estimates and 95% confidence intervals for the percentage of resistant isolates by year. The 95% confidence interval estimates were calculated using the Paulson-Camp-Pratt approximation to the Clopper-Pearson exact method.
  • Some antibiotics were not tested during all years.  For instance, NARMS stopped testing Salmonella, Shigella, and Escherichia coli O157 for susceptibility to cephalothin after 2003, and began testing for Salmonella, Shigella, and Escherichia coli O157 for susceptibility to azithromycin in 2011.
  • View the Surveillance and Laboratory Testing Methods[PDF – 88 pages, 1.48 MB] for NARMS 2012 Human Isolates Annual Report[PDF – 88 pages].

More Information:

For a complete list of antibiotics used for susceptibility testing and criteria used to define resistance in the NARMS 2012 Human Isolates Annual Report[PDF – 88 pages] refer to:

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