Residents in some areas of China have the custom of raw food, jiangsu and Zhejiang and other places residents like to eat small crabs, shrimp and other freshwater crustaceans crustaceans crustaceans caught from rivers and streams, believing that these wild shrimp and crabs are pure natural, pollution-free, delicious taste, and are good food for nourishment and health. As everyone knows, these small creatures are not so pure, and they often carry parasites in their bodies, the most common of which is lung flukes.
Lung flukes, as the name suggests, are named because adult worms predominate in the lungs of humans or mammals. In China, there are mainly Wei's co-breeding flukes and Sisper's tantric flukes. The life history of lung flukes depends on multiple hosts, and the eggs excreted with phlegm or feces first enter the water to hatch hairy cymbals, burrow into the snails to form cytokines, and then develop into female thunder worms, sub-thunder worms, tail cymbals, and then leave the snails, and then invade freshwater crustaceans such as brook crabs and cockroaches to develop into cystic cystaceans.
If people eat stream crabs and cockroaches with lung fluke cysts raw, they may be infected with lung fluke disease.
The acute stage of lung fluke infection is mainly the inflammatory response caused by the passage of children in the body, which is manifested by abdominal pain, diarrhea, fever, fatigue, cough, chest pain, etc. Childhood worms or adult worms eventually settle in the lungs, causing damage to lung tissue, and patients develop chronic manifestations such as cough, hemoptysis, phlegm with a fishy smell, chest pain, and dyspnea.
The insect body may also run to other parts of the body, including the abdomen, subcutaneous, brain, etc., causing damage to the function of the corresponding organs. If the abdomen is invaded, it can cause abdominal pain, diarrhea, and blood in the stool; if it invades the brain, it can cause headaches, ataxia, epilepsy, paralysis, visual impairment, etc.
Lung flukes cause lung manifestations that are similar to those of tuberculosis and are often misdiagnosed as tuberculosis for treatment. If the above reactions occur, and there is a habit of eating raw stream crabs and cockroaches, you should take the initiative to explain to the doctor to help diagnose. The use of drugs such as praziquantel can effectively kill lung trematodes in the body, but the lung damage they cause is difficult to repair and will affect the lung function of patients for a long time.
Although lung trematodiasis is terrible, prevention is relatively simple, and the most effective way is "heating". As long as the food is fully heated and steamed thoroughly, it is not afraid of parasites. For the prevention of lung flukes, the focus is on not eating raw freshwater crustaceans, especially stream crabs and cockroaches, and not drinking raw water from natural waters. Pickling, drunkenness and other methods are not enough to kill the lung flux cysticers hidden in the body of shrimp and crabs, so drunken shrimp, drunken crabs, etc. should not be eaten.
However, in actual life, many people think that they or their relatives and friends often eat raw crab and live shrimp and are not infected with parasites. In fact, raw food means that the risk of infection with parasites is greatly increased, there is a risk does not mean that eating once will be recruited, others eat nothing does not mean that you eat okay, you ate yesterday is okay and does not guarantee that you eat today is okay. For the sake of health, it is necessary to avoid these high-risk behaviors that affect health, and prevention is the mainstay.
Crayfish are close relatives of the Northeast Cystaceae and may also be infected by cysticercosis. At present, most of the commercially available crayfish are artificially farmed, and as long as the breeding environment is strictly controlled, the risk of being contaminated by parasites is greatly reduced.
Moreover, traditional crayfish cooking methods, such as spicy crayfish and thirteen spiced crayfish, generally need to be heated and boiled for more than 20 minutes, this cooking method can kill the parasites in the crayfish, and can be eaten with confidence.
However, in order to meet the flow of customers, some informal small shops process crayfish hastily, and the heating time is not enough, and the risk of eating such crayfish infected with parasites is greatly increased.
*This article originated from Dr. Ma Health Group Dr. Wang Xiaodan
*The image in this article is from the Internet
· Dean of the Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Professor, Doctoral Supervisor
· Member of the National Advisory Committee on Food and Nutrition
· Vice Chairman of the Chinese Nutrition Society
· Member of the Central Science Popularization Work Committee of jiusan society
· Chief Science Communication Expert, China Association for Science and Technology
· Winner of the 2017 Science Communication Award
· Top 10 Science Communicators in 2015
· 2013 China Health Annual General Appraisal List Health Communication Fashion Figures
· Science Communication Person of the Year 2012