China Health Reports on Paragonimiasis, a Tropical Disease Spread Via Food

China Health has drawn attention to paragonimiasis, also known as lung fluke disease. This condition is a foodborne trematode infection caused by several species of flatworms belonging to the genus Paragonimus. The disease is endemic in tropical and subtropical regions across Asia, Africa, and the Americas.

The primary route of infection involves consuming raw or undercooked freshwater crustaceans, such as crabs and crayfish. Larvae ingested in this manner migrate through the intestines and diaphragm to the lungs, where they mature into adult flukes. Geographically, the disease is most prevalent in areas where traditional dietary practices include the raw or marinated consumption of these crustaceans.

Paragonimiasis is classified as a Neglected Tropical Disease (NTD) as it predominantly affects marginalized rural communities with limited access to healthcare and food safety education. Factors such as poverty, inadequate sanitation, and low levels of health awareness contribute to its continued transmission.

Symptoms including chronic cough, chest pain, bloody sputum, and difficulty breathing mimic tuberculosis, often leading to misdiagnosis. Medical treatment, such as the use of triclabendazole, is generally effective. Challenges in disease control include low awareness, a lack of diagnostic tools, and difficulties in changing cultural eating habits.