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Table 2 Description of ESBL harboring samples and bla CTX-M variants found in investigated countries

From: Carriage of CTX-M type extended spectrum β-lactamases (ESBLs) in gulls across Europe

CTX-M group   Denmark England Ireland Latvia Poland Portugal Spain Sweden Netherlands
  Samples (n) 158 133 266 424 280 425 695 217 560
  ESBL genotypes (n)a 0 50 12 98 2 74 572 74 280
  ESBL samples(%)b (0) (27.1) (4.5) (17.4) (0.7) (12.7) (74.8) (20.7) (37.8)
1
   CTX-M-1   5.3c 2.6 4.2 0.4 1.4 3.2 2.3 21.3
   CTX-M-3   0.8   0.2    0.1   0.2
   CTX-M-15   4.5 0.4 3.5   0.5 1.3 13.8 2.1
   CTX-M-32    0.4 0.5 0.4 0.7 2.9   0.7
   CTX-M-55     0.2      
2
   CTX-M-2   1.5   3.3      2.1
8
   CTX-M-8        0.1   
9
   CTX-M-9       0.2 2.7   0.2
   CTX-M-14   8.3     2.4 16.8 0.9 1.4
   CTX-M-14b   1.5   0.2    1.2 0.9 0.4
   CTX-M-24         1.4  
   CTX-M-27   0.8        
   CTX-M-65          0.2
   TEMd   3.0   0.7   6.6 26.2   3.6
   SHVd   12.0 1.1 10.1   5.6 27.8 14.7 17.9
  1. aTotal number of ESBL genotypes (n) in each country. Note that some bacterial strains carried more than one ESBL genotype
  2. bPercentage (%) of total number of samples carrying ESBL
  3. cPercentage (%) of the total n the total number of ESBL in each country umber of ESBL in each country belonging to a certain genotype
  4. dPercentage (%) of TEM and SHV of the total number of ESBL in each country. However, note that a bla TEM and bla SHV genotype present in the same bacterial strain as another ESBL genotype could be bla TEM-1, bla TEM-2, or bla SHV-1 which are not considered true ESBL genotypes, but the original genes from which later genotype variants are derived from