Milk and dairy products can be frequently contaminated with enterotoxigenic Staphylococcus aureus which is often involved in staphylococcal food poisoning. The aims of this study were to study the occurrence of S. aureus in bulk tank milk samples and to test their potential to produce staphylococcal enterotoxins (SEs). A total of 511 bulk tank milk samples were collected from 305 farms in 9 different regions of the Czech Republic. S. aureus was detected in 199 (38.9%) samples. The S. aureus positivity rates varied with sample origin (farm) and ranged from 0 to 67%. The potential to produce enterotoxins A-J was confirmed in 89 (44.7%) of 199 S. aureus isolates. The most commonly detected genes were seg (35.2%) and sei (31.7%). Both genes were detected in 23% of the isolates. Other genes detected were seb (in 5.0% of enterotoxin-positive isolates), seh (5.0%), sed (4.0%), sec (2.5%) and sej (0.5%). The variation in the rates of toxigenic isolates can be attributed primarily to the colonization of farms by specific clones of S. aureus.
Heeschen, W., Reichmuth, J., Tolle, A. & Ziedler, H. (1969): Preservation of milk samples for bacteriologic and cytologic examinations and examinations for inhibitors. Milchwissenschaft, 24, 729–734.
Ziedler H. , 'Preservation of milk samples for bacteriologic and cytologic examinations and examinations for inhibitors ' (1969 ) 24 Milchwissenschaft : 729 -734.
Jørgensen, H.J., Mathisen, T., Løvseth, A., Omoe, K., Qvale, K.S. & Loncarevic, S. (2005b): An outbreak of staphylococcal actions food poisoning caused by enterotoxin H in mashed potato made with raw milk. FEMS Microbiol. Lett., 252, 267–272.
Loncarevic S. , 'An outbreak of staphylococcal actions food poisoning caused by enterotoxin H in mashed potato made with raw milk ' (2005 ) 252 FEMS Microbiol. Lett. : 267 -272.
Jørgensen, H.J., Mork, T., Hogasen, H.R. & Rørvik, L.M. (2005a): Enterotoxigenic Staphylococcus aureus in bulk milk in Norway. J. Appl. Microbiol., 99, 158–166.
Rørvik L.M. , 'Enterotoxigenic Staphylococcus aureus in bulk milk in Norway ' (2005 ) 99 J. Appl. Microbiol. : 158 -166.
Letertre, C., Perelle, S., Dilasser, F. & Fach, P. (2003): Detection and genotyping by real-time PCR of the staphylococcal enterotoxin genes sea to sej. Mol. Cell. Probes, 17(4), 139–147.
Fach P. , 'Detection and genotyping by real-time PCR of the staphylococcal enterotoxin genes sea to sej ' (2003 ) 17 Mol. Cell. Probes : 139 -147.
Loir, Y., Baron, F. & Gautier, M. (2003): Staphylococcus aureus and food poisoning. Genet. Mol. Res., 2(1), 63–76.
Gautier M. , 'Staphylococcus aureus and food poisoning ' (2003 ) 2 Genet. Mol. Res. : 63 -76.
Loncarevic, S., Jørgensen, H.J., Løvseth, A., Mathisen, T. & Rørvik, L.M. (2005): Diversity of Staphylococcus aureus enterotoxin types within single samples of raw milk and raw milk products. J. Appl. Microbiol., 98, 344–350.
Rørvik L.M. , 'Diversity of Staphylococcus aureus enterotoxin types within single samples of raw milk and raw milk products ' (2005 ) 98 J. Appl. Microbiol. : 344 -350.
Lopez-Pedemonte, T., Roig-Sagues, A.X., De Lamo, S., Gervilla, R. & Guamis, B. (2007): High hydrostatic pressure treatment applied to model cheeses made from cow’s milk inoculated with Staphylococcus aureus. Fd Control, 18, 441–447.
Guamis B. , 'High hydrostatic pressure treatment applied to model cheeses made from cow’s milk inoculated with Staphylococcus aureus ' (2007 ) 18 Fd Control : 441 -447.
Løvseth, A., Loncarevic, S. & Berdal, K.G. (2004): Modified multiplex PCR method for detection of pyrogenic exotoxin genes in staphylococcal isolates. J. Clin. Microbiol., 42, 3869–3872.
Berdal K.G. , 'Modified multiplex PCR method for detection of pyrogenic exotoxin genes in staphylococcal isolates ' (2004 ) 42 J. Clin. Microbiol. : 3869 -3872.
Martineau, F., Picard, F.J., Roy, P.H., Ouellette, M. & Bergeron, M.G. (1998): Species-specific and ubiquitous-DNA-based assays for rapid identification of Staphylococcus aureus. J. Clin. Microbiol., 36, 618–623.
Bergeron M.G. , 'Species-specific and ubiquitous-DNA-based assays for rapid identification of Staphylococcus aureus ' (1998 ) 36 J. Clin. Microbiol. : 618 -623.
Monday, S.R. & Bohach, G.A. (1999): Use of multiplex PCR to detect classical and newly described pyrogenic toxin genes in staphylococcal isolates. J. Clin. Microbiol., 37, 3411–3414.
Bohach G.A. , 'Use of multiplex PCR to detect classical and newly described pyrogenic toxin genes in staphylococcal isolates ' (1999 ) 37 J. Clin. Microbiol. : 3411 -3414.
Morandi, S., Brasca, M., Lodi, R., Cremonesi, P.B. & Castiglioni, B. (2007): Detection of classical enterotoxins and identification of enterotoxin genes in Staphylococcus aureus from milk and dairy products. Vet. Microbiol., 124, 66–72.
Castiglioni B. , 'Detection of classical enterotoxins and identification of enterotoxin genes in Staphylococcus aureus from milk and dairy products ' (2007 ) 124 Vet. Microbiol. : 66 -72.
Normanno, G., Firinu, A., Virgilio, S., Mula, G., Dambrosio, A., Poggiu, A., Decastelli, L., Mioni, R., Scuota, S., Bolzoni, G., Giannatale, E., Salinetti, A.P., Salandra, G., Bartoli, M., Zuccon, F., Pirino, T., Sias, S., Parisi, A., Quaglia, N.C. & Celano, G.V. (2005): Coagulase-positive staphylococci and Staphylococcus aureus in food products marketed in Italy. Int. J. Food Microbiol., 98, 73–79.
Celano G.V. , 'Coagulase-positive staphylococci and Staphylococcus aureus in food products marketed in Italy ' (2005 ) 98 Int. J. Food Microbiol. : 73 -79.
Omoe, K., Ishikawa, M., Shimoda, Y., Hu, D.L., Ueda, S. & Shinagawa, K. (2002): Detection of seg, seh, and sei genes in Staphylococcus aureus isolates and determination of the enterotoxin productivities of S. aureus isolates harboring seg, seh, or sei genes. Int. J. Fd Microbiol., 40, 857–862.
Shinagawa K. , 'Detection of seg, seh, and sei genes in Staphylococcus aureus isolates and determination of the enterotoxin productivities of S. aureus isolates harboring seg, seh, or sei genes ' (2002 ) 40 Int. J. Fd Microbiol. : 857 -862.
Ono, H.K., Omoe, K., Imanishi, K., Iwakabe, Y., Hu, D.L., Kato, H., Saito, N., Nakane, A., Uchiyama, T. & Shinagawa, K. (2008): Identification and characterization of two novel staphylococcal enterotoxins, types S and T. Infect. Immun., 76, 4999–5005.
Shinagawa K. , 'Identification and characterization of two novel staphylococcal enterotoxins, types S and T ' (2008 ) 76 Infect. Immun. : 4999 -5005.
Orden, J.A., Goyache, J., Hernández, J., Doménech, A., Suárez, G. & Gómez-Lucia, E. (1992): Detection of enterotoxins and TSST-1 secreted by Staphylococcus aureus isolated from ruminant mastitis. Comparison of ELISA and immunoblot. J. Appl. Microbiol., 72, 486–489.
Gómez-Lucia E. , 'Detection of enterotoxins and TSST-1 secreted by Staphylococcus aureus isolated from ruminant mastitis ' (1992 ) 72 Comparison of ELISA and immunoblot. J. Appl. Microbiol. : 486 -489.
Pospisilova, M. & Karpiskova, R. (2005): Případ stafylokokové enterotoxikózy vyvolané netradičním toxinem SHE. (Enterotoxicosis caused by an unusual staphylococcal toxin SEH.), Zprávy CEM (SZÚ Praha) 14(2), 84–85.
Karpiskova R. , 'Případ stafylokokové enterotoxikózy vyvolané netradičním toxinem SHE ' (2005 ) 14 Zprávy CEM (SZÚ Praha) : 84 -85.
Rabello, R.F., Moreira, B.M., Lopes, R.M., Teixeira, L.M., Riley, L.W. & Castro, A.C. (2007): Multilocus sequence typing of Staphylococcus aureus isolates recovered from cows with mastitis in Brazilian dairy herds. J. Med. Microbiol., 56, 1505–1511.
Castro A.C. , 'Multilocus sequence typing of Staphylococcus aureus isolates recovered from cows with mastitis in Brazilian dairy herds ' (2007 ) 56 J. Med. Microbiol. : 1505 -1511.
Ruzickova, V., Karpiskova, R., Pantucek, R., Pospisilova, M., Cernikova, P. & Doskar, J. (2008): Genotype analysis of enterotoxin H-positive Staphylococcus aureus strains isolated from food samples in the Czech Republic. Int. J. Fd Microbiol., 121, 60–65.
Doskar J. , 'Genotype analysis of enterotoxin H-positive Staphylococcus aureus strains isolated from food samples in the Czech Republic ' (2008 ) 121 Int. J. Fd Microbiol. : 60 -65.
Su, Y.C. & Wong, A.C. (1995): Identification and purification of a new staphylococcal enterotoxin, H. Appl. Environ. Microbiol., 61, 1438–1443.
Wong A.C. , 'Identification and purification of a new staphylococcal enterotoxin, H ' (1995 ) 61 Appl. Environ. Microbiol. : 1438 -1443.
Takeuchi, S., Ishiguro, K., Ikegami, M., Kaidoh, T. & Hayakawa, Y. (1998): Production of toxic shock syndrome toxin by Staphylococcus aureus isolated from mastitic cow’s milk and farm bulk milk. Vet. Microbiol., 59, 251–258.
Hayakawa Y. , 'Production of toxic shock syndrome toxin by Staphylococcus aureus isolated from mastitic cow’s milk and farm bulk milk ' (1998 ) 59 Vet. Microbiol. : 251 -258.
WHO (2007): World Health Organization. Food safety, Risk assessment. Available at: http://www.who.int/foodsafety/micro/riskassessment/en/index.html (last accessed on 30 April, 2008)
Zouharova, M. & Rysanek, D. (2008): Multiplex PCR and RPLA identification of Staphylococcus aureus enterotoxigenic strains from bulk tank milk. Zoonoses Public Health, 55, 313–319.
Rysanek D. , 'Multiplex PCR and RPLA identification of Staphylococcus aureus enterotoxigenic strains from bulk tank milk ' (2008 ) 55 Zoonoses Public Health : 313 -319.