Tamirat Tefera Temesgen

ORCID: 0000-0002-6946-5055
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About
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Research Areas
  • Parasitic Infections and Diagnostics
  • Toxoplasma gondii Research Studies
  • Viral gastroenteritis research and epidemiology
  • Parasitic infections in humans and animals
  • Enterobacteriaceae and Cronobacter Research
  • Amoebic Infections and Treatments
  • Herpesvirus Infections and Treatments
  • Plant Virus Research Studies
  • Insect and Pesticide Research
  • Vector-Borne Animal Diseases
  • Polyamine Metabolism and Applications

Norwegian University of Life Sciences
2019-2022

The risk of foodborne parasite infection linked to the consumption contaminated fresh produce has long been known. However, despite epidemiological links between outbreaks and berries, few studies have assessed magnitude contamination on sold in Europe. present study was aimed address knowledge gap berries Norway. Samples blueberries, strawberries, raspberries were analysed by multiplex qPCR for detection Echinococcus multilocularis, Toxoplasma gondii, Cyclospora cayetanensis. In addition, a...

10.1016/j.fm.2022.103980 article EN cc-by Food Microbiology 2022-01-12

In the autumn of 2018, an outbreak cryptosporidiosis affected adult employees from same company in Western Norway. The organism was Cryptosporidium parvum, GP60 subtype IIaA14G1R1. All those infected had drunk container self-pressed apple juice. Incubation period (1 week) and clinical signs were similar among infected, although some experienced a more prolonged duration symptoms (up to 2-3 weeks) than others. infections resulted after consumption only one 40 containers juice not any other...

10.1017/s0950268819000232 article EN cc-by Epidemiology and Infection 2019-01-01

Cyclospora cayetanensis is a coccidian parasite that has been associated with foodborne outbreaks of gastrointestinal illnesses. Raspberries have implicated as vehicle infection in some these outbreaks. Most the molecular techniques used for detection parasites commonly use 18s rRNA target gene, which highly conserved. The conserved nature gene among coccidia means there potential cross-reactivity from primers intended to this C. same related coccidia. This provides an additional challenge...

10.3389/fmicb.2019.01939 article EN cc-by Frontiers in Microbiology 2019-08-27

Foodborne parasites (FBP) are of major public health importance and warrant appropriate detection control strategies. Most the FBP considered for risk-ranking by a panel experts potentially transmitted via consumption contaminated fresh produce, including berries. In this study we focused on potential three FBP, namely Echinococcus multilocularis, Toxoplamsa gondii, Cyclospora cayetanensis, as contaminants Surveys to assess these produce in general, berries particular, scanty or non-existent...

10.1016/j.foodres.2019.108636 article EN cc-by Food Research International 2019-08-23

The potential public health impact of foodborne parasites (FBP) transmitted via contaminated fresh produces indicates the necessity for robust and reliable laboratory methods their detection identification on this infection vehicle. Standardization common FBP in produce is to be expected ensuring that DNA extraction approach most appropriate interest matrix being analyzed also important. Therefore, aim present study was compare efficacy two commercially available procedures, UNEX-based...

10.1016/j.fm.2020.103447 article EN cc-by Food Microbiology 2020-01-26

Due to the delicate nature of berries and reduced shelf-life once washed, producers usually do not wash berries. Therefore, consumers are expected prior consumption, this might be a more effective way infection prevention. However, efficacy consumer berry-washing procedures in removing parasite contaminants from surface has been investigated. The aim present study was, therefore, compare three different washing techniques contaminants. Three alternatives before consumption were compared on...

10.3390/foods10020481 article EN cc-by Foods 2021-02-23

Cryptosporidium oocysts are known for being very robust, and their prolonged survival in the environment has resulted outbreaks of cryptosporidiosis associated with consumption contaminated water or food. Although inactivation methods used drinking treatment, such as UV irradiation, can inactivate oocysts, they not necessarily suitable use other environmental matrices, In order to identify alternative ways improved viability assessment needed. Here we describe a proof concept novel approach...

10.3390/microorganisms9071463 article EN cc-by Microorganisms 2021-07-08

Protozoan parasites such as Cryptosporidium spp., Giardia duodenalis and Toxoplasma gondii are important causes of human animal disease. Between them, these three were estimated in 2010 to cause about 47 million cases illness (incidence 185 per 100,000 population) Europe. Outbreaks increasingly recognised attributed consumption food; fresh produce leafy greens particular. To date, there is a lack readily applicable standardised methods for testing food feedstuffs, which could provide...

10.2903/sp.efsa.2022.en-7195 article EN EFSA Supporting Publications 2022-03-01
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