I only ate a few snails, but I sent this bean friend to several hospitals for medical treatment, only to find that it was a parasitic infection and had invaded my brain. She is pregnant and has to choose to give up her child for medical treatment.
Studies have proved that each snail contains as many as 3000-6000 Angiostrongylus cantonensis larvae! Nematode larvae will grow in the human body, divided into male and female, and can lay eggs and reproduce in the body.
If you eat raw or undercooked snail meat, it is easy to cause food-borne Angiostrongylus cantonensis, which is caused by nematodes parasitic in the heart and lungs of mice. Meningeal encephalitis can occur. After eating raw or incompletely heated snails, they can be infected, causing headaches, fever, stiff neck and other symptoms, even leading to dementia and even life-threatening. So when eating snails, you must pay attention to thorough heating.
Pomacea canaliculata is native to the Amazon River basin in South America. 198 1 was introduced into China and has been included in the first batch of alien invasive species in China. According to records, in 1980, an Argentine overseas Chinese surnamed Huang brought a box of eggs of Ampullaria gigas to Taiwan Province Province and began to cultivate them. However, farmers in Taiwan Province Province soon changed the name of Ampullaria gigas to "premature snail". 1980 just arrived in Taiwan Province province, and 1982 was affected by the disaster in Tainan. Ampullaria canaliculata is not limited by water. It can climb to the shore to lay eggs and easily spread across ponds.
A few years later, there were reports of snail invasion in Chinese mainland. Because the cost of snails is less than half that of snails, some businesses will use snails instead. However, Ampullaria canaliculata happens to be the intermediate host of Angiostrongylus cantonensis ... Snail meat should be boiled in boiling water for 20 minutes, then removed and cooled. But snail meat will become hard when cooked for a long time, so the chef only cooked it for 3-5 minutes.
At that time, a popular Sichuan restaurant in Beijing introduced a dish: cold snail meat. Originally, conch was used, but customers reported that conch was expensive and varied in size. So the restaurant was replaced by a snail. Results 160 people ate this dish and were infected with Angiostrongylus cantonensis. The incident caused a sensation in the whole country, and the restaurant had to pay customers and was punished by the Health Bureau, eventually losing more than 23 million yuan.
The difference between China snail (a kind of snail that people often eat in China) and Ampullaria gigantea;
The first is the shape. The overall size of Ampullaria gigas is larger than that of most snails. This snail is very tall and has a sharp head. Pomacea canaliculata is flat and its head will not tilt. The flat one is Ampullaria gigas. The tall one is a snail.
Second, opening, the opening of a snail is similar to that of a snail. It rotates from top to bottom, the stable circle is larger than the circle, and finally opens; Snails are not at all. They suddenly become very big at the last turn, so their openings are exaggerated and out of proportion to their size.
Third, the taste, the snail has been burned for a long time, and the meat is soft and glutinous; Pomacea canaliculata is very resistant to burning, and it tastes crisp after burning for a long time.
Don't just pay attention to snails, but remember, don't catch agate snails in the wild! Brown cloud agate snail. It is also called African snail, and it is a super-large snail. Now it has invaded the south and crawled everywhere. The above data show that it is more susceptible to insects than snails.
In 2007, it was found that the infection rate of Oncomelania hupensis was the lowest and the infection rate of Oncomelania hupensis was the highest! It is said that "this species is the intermediate host of many human and animal parasites and pathogens, especially the spread of tuberculosis and eosinophilic meningitis, which is extremely harmful after eating."
Anyway, snail lovers should not be careless. Snails can also be infected with Angiostrongylus cantonensis, but the infection rate is far less than that of Ampullaria gigas. Therefore, we still remind the majority of foodies that many of them must be cooked and eaten, so they will basically not be recruited.