Seasonal variability of thermophilic Campylobacter spp. in raw milk sold by automatic vending machines in Lombardy Region

  • Barbara Bertasi Institute for Experimental Veterinary Medicine of Lombardy and Emilia- Romagna, Brescia, Italy.
  • Marina Nadia Losio Institute for Experimental Veterinary Medicine of Lombardy and Emilia- Romagna, Brescia, Italy.
  • Paolo Daminelli Institute for Experimental Veterinary Medicine of Lombardy and Emilia- Romagna, Brescia, Italy.
  • Guido Finazzi Institute for Experimental Veterinary Medicine of Lombardy and Emilia- Romagna, Brescia, Italy.
  • Andrea Serraino | andrea.serraino@unibo.it Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Ozzano dell’Emilia (BO), Italy.
  • Silvia Piva Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Ozzano dell’Emilia (BO), Italy.
  • Federica Giacometti Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Ozzano dell’Emilia (BO), Italy.
  • Elisa Massella Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Ozzano dell’Emilia (BO), Italy.
  • Fabio Ostanello Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Ozzano dell’Emilia (BO), Italy.

Abstract

In temperate climates, a seasonal trend was observed in the incidence of human campylobacteriosis cases, with peaks reported in spring and autumn in some countries, or in summer in others; a similar trend was observed in Campylobacter spp. dairy cattle faecal shedding, suggesting that cattle may play a role in the seasonal peak of human infection. The objectives of this study were to assess if a seasonal trend in thermophilic Campylobacter spp. contamination of raw milk exists and to evaluate a possible relation between this and the increase of human campylobacteriosis incidence in summer months. The results showed a mean prevalence of 1.6% of milk samples positive for thermophilic Campylobacter spp. with a wide range (0.0-3.1%) in different months during the three years considered. The statistical analysis showed a significant difference (PCampylobacter spp. between warmer and cooler months (2.3 vs 0.6%). The evidence of a seasonal trend in thermophilic Campylobacter spp. contamination of raw milk sold for direct consumption, with an increase of the prevalence in warmer months, may represent one of the possible links between seasonal trend in cattle faecal shedding and seasonal trend in human campylobacteriosis.

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Published
2016-06-16
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Section
Short Communications
Keywords:
Thermophilic Campylobacter spp., Raw milk, Seasonal variation
Statistics
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How to Cite
Bertasi, B., Losio, M. N., Daminelli, P., Finazzi, G., Serraino, A., Piva, S., Giacometti, F., Massella, E., & Ostanello, F. (2016). Seasonal variability of thermophilic Campylobacter spp. in raw milk sold by automatic vending machines in Lombardy Region. Italian Journal of Food Safety, 5(3). https://doi.org/10.4081/ijfs.2016.5848

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