Parasites Beyond Cyclospora Can Be Foodborne

Health officials are currently monitoring an increase in cyclosporiasis cases across several U.S. states, highlighting the ongoing risk of foodborne parasitic infections. Experts emphasize that Cyclospora is just one of many parasites that can be contracted from consuming contaminated food and water. These parasites are broadly categorized into two main groups: protozoa and helminths.

Protozoa are single-celled organisms, and common examples include Giardia duodenalis, Cryptosporidium species, and Toxoplasma gondii. Giardia and Cryptosporidium are frequently transmitted through contaminated water sources, but can also be found in undercooked foods. Toxoplasma gondii, a parasite that can cause toxoplasmosis, is often associated with undercooked meat and contaminated produce. The Centers for Disease Control and Prevention (CDC) notes that Cyclospora cayetanensis infections are typically linked to fresh produce, such as berries and leafy greens, imported from regions where the parasite is endemic.

Helminths, on the other hand, are multicellular parasitic worms. Examples include tapeworms (cestodes) and roundworms (nematodes). Taenia species, a type of tapeworm, can be acquired by eating raw or undercooked beef or pork contaminated with their larvae. Trichinella species, another type of roundworm, are commonly found in undercooked pork and wild game. These infections can lead to a range of symptoms, from gastrointestinal distress to more severe systemic issues, depending on the specific parasite and the extent of the infection.

Preventing these infections largely relies on practicing good food safety and hygiene. This includes thorough handwashing, especially after using the restroom and before preparing or eating food. Proper cooking of meats to recommended internal temperatures is crucial for eliminating parasite larvae. Washing fruits and vegetables thoroughly under running water, even those with peels, can help remove surface contaminants. Avoiding untreated water sources and being mindful of food origins, particularly for produce imported from areas with less stringent sanitation standards, are also key preventive measures. Public health agencies continue to monitor outbreaks and provide guidance on safe food handling practices to mitigate the spread of these foodborne parasites.