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Parasites in food

Parasites are organisms that derive nourishment and protection from other living organisms known as hosts. When found in food, they can cause diseases in humans. More than1,000 human casesof food-borne parasitic infections are reported in the European Union each year.

To protect consumers from this public health threat, the EU has adopted an integrated approach to food safetyfrom farm to fork. The approach consists of both risk assessment  A specialised field of applied science that involves reviewing scientific data and studies in order to evaluate risks associated with certain hazards. It involves four steps: hazard identification, hazard characterisation, exposure assessment and risk characterisation. and risk management The management of risks which have been identified by risk assessment. It includes the planning, implementation and evaluation of any resulting actions taken to protect consumers, animals and the environment. measures involving all key actors: EU Member States, European Commission, European Parliament, EFSA and the European Centre for Disease Prevention and Control (ECDC). It is supported by timely and effective risk communication The interactive exchange of information and opinions throughout the risk analysis process, including the explanation of risk assessment findings and the basis of risk management decisions. The levels of interactive exchange include: the dissemination of public information about risks to consumers or other affected groups; the dialogue within and between risk assessment and risk management; engagement with interested parties affected by risk analysis outcomes. activities.

EFSA plays an important role in protecting the public from this threat by providing independent scientific support and advice on the human health and food safety-related aspects of parasites in food.

Some parasites, such as Trichinella, Toxoplasma and Giardia can be directly or indirectlytransmitted between animals and humans through the consumption ofcontaminated food or drinking water. Health effects of foodborne parasitic infections vary greatly depending on the type of parasite, ranging from mild discomfort to debilitating illness and possibly death. Parasites can also be transmitted to humans or other animals by vectors.

Safe handling of food and good kitchen hygiene can prevent or reduce the risk posed by contaminated foodstuffs.


  1. 2018


    EFSA reviews methods for detection, identification and tracing of three parasites that may be transmitted through foodCryptosporidium spp.,Toxoplasma gondii, and Echinococcus spp. Experts also review literature on foodborne pathways, examine information on  occurrence The fact or frequency of something (e.g. a disease or deficiency in a population) happening. in foods, and investigate possible control measures along the food chain.

  2. 2015


    Experts assess the public health risks posed by pathogens (disease-causing bacteria, viruses and parasites) that may contaminate foods of non animal-origin such as fruits, vegetables, cereals and spices. This is the last of a series of scientific opinions published over four years.

  3. 2010


    EFSA assesses food safety concerns resulting from possible allergic reactions to parasites in a range of fish products and to assess methods to reduce risks of infection. Experts conclude that the only parasite in fish products for human consumption likely to cause allergic reactions is Anisakis, a worm whose larvae can be found in fish flesh.

EFSA's role

EFSA provides independent scientific advice and scientific assistanceby collecting and analysing data on the prevalence The proportion of a population found to have a condition. of parasites in the food chain as well as by assessing the risks posed by these parasites and advising on control and mitigation options.

EFSA’s findings are used by risk managers in the EU and the Member States to help inform policy, and to support the setting of control measures.

Annual monitoring of parasites in animals and food

EU-wide dataon the presence of parasites in the food chain and on the prevalence of animal and human infectionare collected and analysed in annual EU summary reports prepared by EFSA and ECDC. The monitoring data are used with other information to evaluate the progress made in EU Member States in reducing the prevalence of these parasites.

Risk assessments and recommendations

EFSA’s Panel on Biological Hazards evaluates the food safety risks of parasites and provides scientific advice on control options at the request of risk managers or on its own initiative.

EU framework

The monitoring and control of foodborne diseases as well as food hygiene requirements and food safety criteria are regulated by EU legislation. For details on the regulatory framework, see the topic on Foodborne zoonotic diseases.