You have isolated an Enterobacter cloacae from a positive blood culture. AST gives the following results: ampicillin is resistant, all cephalosporins and aminoglycosides are sensitive but meropenen, ertapenem and imipenem are resistant. What further testing (if any) is needed as this point.

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You have isolated an Enterobacter cloacae from a positive blood culture. AST gives the following results: ampicillin is resistant, all cephalosporins and aminoglycosides are sensitive but meropenen, ertapenem and imipenem are resistant. What further testing (if any) is needed as this point.

Please select the single best answer

	These are typical AST results for E. cloacae. No further testing is required
	Possible NMCA Carbapenemase. Set up 12 disk test and metallo-beta-lactamase Etest strip, and perform modified Hodge Test.
	Check for possible contamination, repeat the AST. If results are consistent with original AST, report results with no testing caveats.
	None of the above