TABLE 1.

Carbapenem-resistant K. pneumoniae isolates included in this binational study

CountryYr of isolationNo. of isolatesMIC (μg/ml)a
ImipenemMeropenemErtapenem
Israel2006-200810016, 32 (<0.25-128)64, 128 (2-256)128, 256 (<0.5->256)
United Statesb2000-2006264, 64 (<0.25-128)8, 64 (<0.5-256)16, 128 (<0.25->256)
  • a MIC50, MIC90 (MIC range).

  • b Outbreak isolates from various states, including New York, Delaware, Maryland, Pennsylvania, New Jersey, and Arizona.