Table 1.

Resistance phenotypes in Listeria spp.

Resistance phenotypeaCountry of originb (no. of strains)Reference(s)
L. monocytogenes
 Humans
  Cm Cl Gm Sm ToGreece 46
  Cm Em Sm Tc-McFrance (1) 35
  Cm Em Tc-McFrance (1) 38
Switzerland (1) 21
  TcUK (33) 30, 36
France (3) 42
  SmND (1) 44
Italy (2) 14
Switzerland (2) 9
France (1) 9
  EmUK (1) 30
  CpFrance 42
 Food and environment
  TpFrance (1) 9
  Tc-McFrance (31) 9
Italy (5) 9
Czechoslovakia (1) 9
  Km Sm SuItaly (2) 14
  Km Rif Sm SuItaly (1) 14
  Cm Em Km Rif Sm SuItaly (1) 14
L. innocua (food and environment)
 TcCanada (2) 44
Italy (1) 14,15
Spain (8) 18
 Tc-McItaly (16) 9
Sweden (4) 9
Spain (1) 9
France (1) 9
 Em TcItaly (1) 14, 15
 Sm Tc-McItaly (1) 9
 EmItaly (1) 14
 Sm SuItaly (2) 14
 Km Sm SuItaly (1) 14
L. welshimeri(food)
 Tc-McItaly (2) 9
  • a Cm, chloramphenicol; Cl, clindamycin; Cp, ciprofloxacin; Em, erythromycin; Gm, gentamicin; Km, kanamycin; Mc, minocycline; Rif, rifampin; Sm, streptomycin; Su, sulfonamide; Tc, tetracycline; To, tobramycin; Tp, trimethoprim.

  • b UK, United Kingdom; ND, non determined.