Publications by authors named "Annette Johne"

is a cause of diarrheal infections responsible for a loss of human and animal welfare worldwide. The impact of the parasite is underestimated and the reported sources of infection are diverse, as it occurs in a wide variety of hosts. Wildlife has been reported as a notifiable source, but few studies are available on its occurrence in European wild boar and cervid species.

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Article Synopsis
  • In Germany, Trichinella spp. primarily affect wild animals like wild boar, foxes, and raccoon dogs, with T. spiralis being the most commonly detected species.
  • Legal requirements mandate that all hunted wild boars and other at-risk animals be tested for Trichinella if their meat is for human consumption.
  • There has been a rising prevalence of Trichinella-positive wild boar in Germany, especially in the northeastern regions bordering Poland, highlighting the need for preventive measures and thorough inspections to manage the spread.
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The raccoon (Carnivora: Procyonidae) is an invasive species of growing importance for the introduction of alien pathogens or as additional hosts for autochthonous pathogens in Europe, including zoonotic parasites. As the population is steadily increasing and outcompeting the red fox () in Germany, the consumption of raccoon meat raises concerns about pathogens they may transmit. Therefore the presence of larvae was here investigated in muscle samples (n = 904) of raccoons from northern Germany.

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  • Climate change is altering key environmental factors like temperature and precipitation, which can lead to increased spread of pathogens.
  • The review focuses on foodborne pathogens relevant to Germany, including certain bacteria, parasites, and marine biotoxins.
  • As climate change advances, the incidence of foodborne infections and toxins in Germany is anticipated to rise, posing a significant public health challenge.
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Trichinella spp. are foodborne parasites that can cause severe and potentially fatal disease in humans. Infections occur through consumption of meat containing the infectious stage (L1).

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() mesocercariae (AM) have increasingly appeared as incidental findings during the mandatory inspection of wild boars for in many European countries. An spp.-specific PCR is available for the identification of AM; however, it is time- and cost-intensive.

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The importance of game as a source of () infection in humans is largely unknown. New data on the presence of in game hunted in the Federal State of Brandenburg, Germany, were obtained by direct and indirect detection (ELISA). DNA extracted either directly (5 g heart or foreleg muscle, DE) or after acid pepsin digestion (50 g heart, PD) or enriched by magnetic capture (50 g heart, MC) was examined by real-time PCR (qPCR).

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Processing of meat is one possible approach to control meat-borne parasites. Processing methods such as freezing, cooking and irradiation are recommended for the control of Trichinella in pork, horse or game meat if specific technical conditions are fulfilled. Curing is a widely used preservation process influencing product characteristics such as shelf life, food safety, and taste.

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Since 2002, Alaria (A.) alata mesocercariae (AM) have been found during routine Trichinella inspection of wild boars in many European countries. To date, human infection with AM through consumption of undercooked or raw AM infested wild boar meat cannot be excluded.

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Processing of meat is one possible approach to control meat-borne parasites. Processing methods such as freezing, cooking and irradiation are recommended for the control of Trichinella in pork, horse or game meat if specific technical conditions are fulfilled. Curing is a widely used preservation process influencing product characteristics such as shelf life, food safety, and taste.

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To ensure that meat from livestock and game is safe for human consumption, European legislation lays down rules for mandatory testing. Helminth larvae are a category of zoonotic foodborne pathogens that can contaminate meat. Among helminths, the only zoonotic nematode regulated in Europe regarding meat inspection is Trichinella spp.

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Consumption of game in Germany has increased during the past 10 years. Wild boar (Sus scrofa), roe deer (Capreolus capreolus) and red deer (Cervus elaphus) are the most frequently hunted and consumed game animals in Germany, yet information on the occurrence of zoonotic pathogens in these animal species is scarce. To better estimate the public health risk emanating from handling and consumption of game, this study investigated seroprevalences of Toxoplasma gondii in game hunted in the German federal state of Brandenburg during two hunting seasons from 2017 to 2019.

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Comparison of epidemiological data on the occurrence of tissue cysts in meat is hampered by the lack of standardization and a great variety of methods for molecular detection. Therefore, this study aimed to compare and validate three different polymerase chain reaction (PCR) methods for detection of DNA in pork. Analytical performance characteristics of two real time PCRs (qPCRs; Tg-qPCR1, Tg-qPCR2) and one conventional endpoint PCR (cPCR), all targeting the 529 repeated element, were assessed using genomic DNA of three clonal types prevailing in Europe and North America.

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