Salmonella enteritidis

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform

Ulrich Heininger - One of the best experts on this subject based on the ideXlab platform.

G. Wiegand - One of the best experts on this subject based on the ideXlab platform.

R A Ernst - One of the best experts on this subject based on the ideXlab platform.

  • efficacy of disinfection of shell eggs externally contaminated with Salmonella enteritidis implications for egg testing
    International Journal of Food Microbiology, 1999
    Co-Authors: Sakchai Himathongkham, H P Riemann, R A Ernst
    Abstract:

    Abstract Experimental contamination of the surface of shell eggs by dipping in a culture of Salmonella enteritidis resulted in the presence of Salmonella enteritidis in/on the shells as well as shell membranes but not in the egg content. Disinfection with Lugol’s solution, chlorhexidine, ethanol, quarternary ammonium solutions or flaming after dipping in ethanol failed to achieve complete decontamination of the shell and membranes with resulting false positives when eggs were broken for culturing of the content. Dipping eggs for three seconds in boiling water resulted in complete destruction of Salmonella enteritidis in shells and membranes but sometimes caused the eggs to crack. A method of aseptically opening eggs without risk of contaminating the content from the shell or membrane was developed. Salmonella enteritidis deposited in/on the shell and membranes did not multiply during storage of the eggs at 20°C for four weeks, the counts seemed to decrease. No Salmonella enteritidis was detected in the contents of any contaminated eggs.

F. Van Immerseel - One of the best experts on this subject based on the ideXlab platform.

  • Internal contamination of eggs by Salmonella enteritidis
    Improving the Safety and Quality of Eggs and Egg Products, 2020
    Co-Authors: Ruth Raspoet, Freddy Haesebrouck, Richard Ducatelle, Inne Gantois, Rosalie Devloo, Frank Pasmans, F. Van Immerseel
    Abstract:

    Abstract: Egg contamination by Salmonella enteritidis is one of the most important causes of foodborne gastroenteritis in humans throughout the world. This chapter critically overviews the possible routes of internal egg contamination by S. enteritidis, ranging from penetration through the shell to incorporation into the forming egg. Survival of Salmonella in the forming egg and survival and multiplication strategies in eggs post-lay are also discussed. Salmonella enteritidis seems to harbour a specific battery of virulence factors, enabling it to efficiently contaminate laying hen eggs and to survive in the hostile egg white compartment.

  • Administration of a Salmonella enteritidis ΔhilAssrAfliG strain by coarse spray to newly hatched broilers reduces colonization and shedding of a Salmonella enteritidis challenge strain
    Poultry Science, 2014
    Co-Authors: W. De Cort, Freddy Haesebrouck, R. Ducatelle, F. Van Immerseel
    Abstract:

    Abstract Consumption of contaminated poultry meat is still an important cause of Salmonella infections in humans. Colonization inhibition (CI) occurs when a live Salmonella strain is administered to chickens and subsequently protects against challenge with another Salmonella strain belonging to the same serotype. A Salmonella enteritidis hilAssrAfliG deletion mutant has previously been proven to reduce colonization and shedding of a wild-type Salmonella enteritidis strain in newly hatched broilers after experimental infection. In this study, we compared two administration routes for this strain. Administering the Salmonella enteritidis ΔhilAssrAfliG strain through drinking water on the first day of life resulted in decreased fecal shedding and cecal colonization of a wild-type Salmonella enteritidis challenge strain administered 24 h later using a seeder-bird model. When administering the CI strain by coarse spray on newly hatched broiler chicks, an even more pronounced reduction of cecal colonization was observed, and fecal shedding of the Salmonella enteritidis challenge strain ceased during the course of the experiment. These data suggest that administering a Salmonella enteritidis ΔhilAssrAfliG strain to newly hatched chicks using a coarse spray is a useful and effective method that reduces colonization and shedding of a wild-type Salmonella enteritidis strain after early challenge.

  • A Salmonella enteritidis hilAssrAfliG deletion mutant is a safe live vaccine strain that confers protection against colonization by Salmonella enteritidis in broilers
    Vaccine, 2013
    Co-Authors: W. De Cort, Freddy Haesebrouck, Richard Ducatelle, Sofie Geeraerts, V. Balan, M. Elroy, F. Van Immerseel
    Abstract:

    Consumption of contaminated poultry meat is an important cause of Salmonella infections in humans. Therefore, there is a need for control methods that protect broilers from day-of-hatch until slaughter age against infection with Salmonella. Colonization-inhibition, a concept in which a live Salmonella strain is orally administered to day-old chickens and protects against subsequent challenge, can potentially be used as control method. In this study, the safety and efficacy of a Salmonella enteritidis ΔhilAssrAfliG strain as a colonization-inhibition strain for protection of broilers against Salmonella enteritidis was evaluated. After administration of the Salmonella enteritidis ΔhilAssrAfliG strain to day-old chickens, this strain could not be isolated from the gut, internal organs or faeces after 21 days of age. In addition, administration of this strain to one-day-old broiler chickens decreased faecal shedding and caecal and internal organ colonization of a Salmonella enteritidis challenge strain administered one day later using a seeder bird model. To our knowledge, this is the first report of an attenuated Salmonella strain for which both the safety and efficacy has been shown in long-term experiments (until slaughter age) in broiler strain can potentially be used as a live colonization-inhibition strain for controlling Salmonella enteritidis infections in broilers.

R. Rauch - One of the best experts on this subject based on the ideXlab platform.