Nguyen Van T. (Dong Da, Hanoi) hospitalized in a state of severe cough, bleeding. After the hospital with tuberculosis, he was transferred to the Hospital physician Tropical Central. After shooting the film, test, sputum, doctors determined he suffered lung fluke, fluke food drive hollow and severe lung damage, coughing up blood, and fever. Without aggressive treatment, patients may endanger his life. According to medical experts, in Vietnam, lung fluke infection is endemic in 8 northern provinces (Lai Chau, Son La, Hoa Binh, Lao Cai, Yen Bai, Ha Giang, Lang Son, Nghe An). Tropical Central Hospital each reception and treatment for many patients with lung flukes, many cases of pertussis nearly died, bleeding. The main reason is due to eat shrimp, crabs, snails improper, especially shrimp, crabs, snails baked unripe. By intermediate hosts lung fluke disease for humans and animals is shrimp, crabs and snails. How to eat uncooked shellfish (crab bake, crab salad, shrimp salad, crab eating raw, pickled crab, live crab drinking water ...) also are at risk for lung fluke infection. When larval parasites in the human body, each pair will nest in the lung parenchyma. A few residents at heart, peritoneum, liver, kidney, subcutaneous parasites, liver, intestines, testicles, brains ... Shantou where localized necrosis cystic fibrosis there to the surrounding fluke mature. Juvenile flukes will then move to other organs, could nest, lay eggs outside the lung, or go into the systemic circulation and nest in other areas (in ectopic position can cause inflammation , cysts, abscesses, granuloma, ...). There is also the risk of other diseases from eating shrimp, crabs, snails baked as preliminary processing of dirty, dirty containers in grills, barbecue unripe, rotten row, down is "witchcraft". Whether grilled over charcoal, coal, charcoal and Carbon Monoxide, combined with substances in the body will suffer from paralysis because no animal transport body oxygen. Baked at high temperatures creates toxic gas PHA (polycyclic aromatic hydrocarbon) cling to food can cause cancer.