TABLE 2.

Prevalence of AmpC subgroups in AmpC-positive isolatesa

CountryPrevalence (no. of isolates)
Nonconfirmed ESBL testConfirmed ESBL test
E. coliK. pneumoniaeE. coliK. pneumoniae
CITDHACITDHACITDHACITDHA
Australia11
Hong Kong12933
Japan1
Korea132
China221
The Philippines19193
Singapore2
South Africa1
Taiwan121221
Total21114342508
  • a CIT and DHA, AmpC subgroups of CIT and DHA enzymes.