TABLE 1.

Ambler class A extended-spectrum β-lactamases known in P. aeruginosa

β-LactamaseGenetic supportaCountry of first isolationYr of first isolationOther countries of isolationReference(s)
VEB-1C, P, IFrance1998Thailand, India,b Chinab8, 17, 32, 51
VEB-1aC, IKuwait199943
VEB-1bC, IKuwait199943
VEB-2C, IThailand199917
PER-1CFrance1991Turkey, Italy, Belgium10, 12, 24, 34, 53, 54
SHV-2aC, PFrance1995Thailand, Polandb8, 31
SHV-5PThailand1994-1996Greeceb8
SHV-12CThailand1994-19968
TEM-4P, CFrance199642
TEM-21CFrance199713
TEM-24PFrance199825
TEM-42PFrance199230
GES-1C, IFrance199914
GES-2P, ISouth Africa200044, 45
IBC-2C, IGreece199827
  • a C, chromosomal location; P, plasmid borne; I, integron-borne.

  • b P. Nordmann, personal data.