According to information from Bach Mai Hospital (Hanoi), Dr. Nguyen Trung Nguyen, Director of the Poison Control Center, said that there are at least 3 types of poisonous crabs: demon-faced crab, seed crab and Florida crab. father in the waters of Central Vietnam, Nha Trang and some other places. Recently, the Institute of Oceanography, Vietnam Academy of Science and Technology, also confirmed that the man in Thanh Hoa was poisoned after eating crab. This type of crab has a very high toxicity, very easily fatal when eaten. Dr. Nguyen said that the crab poisoning progress is very fast, it can appear after eating within a few hours. Many patients eat at sea, on ships, on islands, get poisoned and when they are brought ashore, they cannot be treated in time. Even many cases died on the way to the hospital. Devil-faced crab Devil face crab, scientific name is Zosimus aeneus, is one of the poisonous crab species living in Vietnamese waters, there are many from Da Nang to Vung Tau. Devil-faced crabs are often hidden in shallow, low-tide areas. They have the same color as coral, so it is difficult to identify. According to information from Nha Trang Institute of Oceanography, the devil face crab has the widest chest shell of nearly 90 mm, about 55 mm long. Crab shell has many flat convex, eye-catching colors, unlike food sea crabs. Devil-faced crabs are blue-green with white, brown, and yellow markings. The legs and legs of the crab are dark brown. The crab’s meat, eggs and claws contain the same toxins in pufferfish as saxitoxin, neurotoxin and tetrodotoxin. The poisonous crabs poisonous crabs formed by the main food source are the algae in the coral reef. These substances cause paralysis of the nervous system, inhibiting respiration. This is a very powerful toxin to the nervous system, just 0.5 mg can be fatal for adults. Devil-faced crabs can be fatal when ingested. Photo: Sciencesource. Crab fan This crab species has the scientific name Demania reynaudii of the family Xanthidae (the Xanthid reef crab). According to the literature, the fan crab is a crustacean, benthic, common in coral reefs in the tropical Indo-Pacific. Currently, scientists have identified nearly 300 species of crabs living in the sea, some of which contain the toxin saxitoxin or tetrodotoxin. These are 2 toxins that cause poisoning and death if ingested. According to Associate Professor, Dr. Dao Viet Ha, Director of Institute of Oceanography, Vietnam Academy of Science and Technology, tetrodotoxin is heat-stable and acid-stable so it does not decompose at high temperature when cooking. nine. It can even exist in processed, frozen, canned products. This toxin can affect the central nervous system of humans and higher animals, stopping the transmission of nerve signals. Symptoms of poisoning usually appear about 30 minutes after eating, including tongue numbness, lip numbness, dizziness, headache, abdominal cramps, nausea, vomiting, difficulty speaking, difficulty swallowing, movement imbalance. .. In severe cases, the victim has seizures, froth, coma and death. Demania renaudii fan crab specimen collected from food poisoning in Thanh Hoa on March 27. Photo: Truong Si Hai Trinh. Crab seeds The seed crab (Platypodia granulosa) is just as poisonous as the demon face crab. Crab seeds have oval body. Their nipple shells are semi-circular, the longest about 30 mm, the widest about 40 mm, covered with granular convex tumors. Raw crabs are yellowish-green in color, sometimes yellowish-brown or purplish-red in color. The knuckles are black in color. The seed crab is usually found on living coral reefs, at a depth of about 3 m, at Hon Tam – Nha Trang. They are sometimes mistaken for the common Florida crab (Atergatis floridus). Crab Florida According to the National Institutes of Medicine (NIH), this crab has the scientific name Atergastis floridus. They have an oval body, relatively narrow shell, smooth surface, smooth back. The whole crab body is brown to dark brown in color, with large yellow spots on the back. The Florida crab has a nipple shell that is almost like a horizontal ellipse. The back surface of the crab shell is slightly convex but smooth, making it difficult to identify areas. The toes are dark colored. The crabs are of large, equal and smooth size with a black spoon-shaped head. Male crabs are usually larger than females. The crab shell has a square shape, is quite thick and has a width of 8-10 cm. Florida crabs are usually more active at night. Atergatis floridus occurs in the eastern Indian Ocean, Southeast Asia, Australia, and the western Pacific. According to the Western Australian Museum, The meat of the crab Florida, like many related crabs from the Xanthidae family, is very poisonous. The toxins in this crab species such as tetrodotoxin and saxitoxin are produced by vibrio-like bacteria that live in symbiosis on crabs. These toxins, similar to puffer fish, are a major factor in poisoning cases in shellfish.

The hospital has classified and transferred 6 cases with background diseases to Da Nang Obstetrics and Pediatrics Hospital for monitoring and treatment. The remainder were treated at the hospital’s Pediatric Department. At present, the health of the children has not progressed seriously, of which 9 cases were discharged from the hospital this afternoon. Poisoned students are examined by a doctor According to a quick report from the school, on the morning of the same day, before entering the classroom, some students of Hoa Khuong Primary School got together to buy slam clay at a grocery store in front of the school. After playing clay, many students began to show signs of headaches, stomach pain, vomiting, and shortness of breath In the afternoon of the same day, Dr. Tran Sy – Deputy Director of Hoa Vang District General Hospital said that the hospital received emergency care of 34 students with headache, abdominal pain, shortness of breath, and itching. Examination of the lungs and nerves had no effect. This afternoon, the school let all students leave school for medical staff to continue checking – Dr. Tran Sy said. In the afternoon of the same day, the Hoa Vang District Police, the Environmental Police and the Food Safety Board of Da Nang City were present at the scene, inspecting the shops near the school gate and taking samples of toys and patient samples to Investigate and clarify the cause of the incident.

List of Pascal students who have suspected food poisoning.

Ms. TA also added that there are no official results and information to wait for the inspection team to announce.

According to the reporter, there are currently about 50 students out of school. Most children have symptoms such as diarrhea, vomiting … Particularly, a few children with high fever have to be hospitalized for treatment.

Many parents, worried about the above incident, took the initiative to drop their children from school.

As soon as he got the information, the reporter contacted a number of parents and learned that, on the same morning, the school’s administrators were working with the parent boards. Pascal school leaders are working with the medical inspection team of Bac Tu Liem district to urgently test and investigate the cause of the incident.

The vast majority of parents expressed their support for the school and wanted the functional forces to have test results soon so they could feel secure.

Pascal Primary-Secondary School is located on a common campus with Newton School (Hoang Quoc Viet Street, Bac Tu Liem District, Hanoi).

Reporters are trying to contact the leadership of Pascal school to update the information soon.

Currently, 5 pupils with severe symptoms and shortness of breath have to move to the Obstetrics and Pediatrics Hospital for treatment.

34 students received first aid at the hospital.

In the afternoon of the same day, Dr. Tran Sy – Deputy Director of Hoa Vang District General Hospital said that the hospital received emergency care of 34 students with headache, abdominal pain, shortness of breath, and itching.

Examination of the lungs and nerves had no effect. All students entering the emergency room are believed to have been poisoned after using “strange” toys purchased at the school entrance. The hospital then had to transfer 5 students to the Obstetrics and Pediatrics Hospital in a state of severe shortness of breath.

This afternoon, the school let all students leave school for medical staff to continue checking – Dr. Tran Sy said.

In the afternoon of the same day, the Hoa Vang District Police, the Environmental Police and the Food Safety Board of Da Nang City were present at the scene, inspecting the shops near the school gate and taking samples of toys and patient samples to Investigate and clarify the cause of the incident.

After receiving the patients, the hospital classified and transferred 6 severe cases to the higher level. The other cases being treated at the hospital are now stable health and no case of hospitalization.

Concerning this incident, Mr. Nguyen Thuc Dung (Vice Chairman of Hoa Vang District People’s Committee) said that this morning, before entering class, some students had bought together slam clay at the shops in front of the school to play.

After a while, many students began to show symptoms of vomiting, difficulty breathing. Discovering the incident, the teacher took these children to the emergency. Currently the whole school has been dismissed from school to spray treatment.

“The police have also collected slam clay samples for inspection and are verifying the origin and origin of this toy,” said Dung, adding that this is the first time in the locality. Poisoning caused by playing clay.

The primary cause of emergency students was playing slam clay.

32 students went to the hospital in emergency this morning.

As Infonet reported, this morning, 32 students of Hoa Khuong 1 Primary School (Hoa Khuong commune, Hoa Vang district) were admitted to the emergency hospital with chest tightness, shortness of breath, nausea, headache.

It is known that most of these children are students in grades 3, 4 and 5. The severe cases are because they play directly with toys, they watch and do not come into contact with the milder situation.

It is known that in the morning of the same day, before entering the classroom, a number of students of Hoa Khuong Primary School got together to buy slam clay at a grocery store in front of the school gate. After playing clay, many students began to show symptoms of vomiting, difficulty breathing. The school quickly sent the children to the emergency hospital.

After playing clay, many students get tired, have headaches, and have difficulty breathing

Mr. Nguyen Thuc Dung, Vice Chairman of Hoa Vang District People’s Committee, said that the authorities have come to the scene to collect slam clay samples for testing and testing. Hoa Khuong Primary School took all students out of school to carry out disinfection.

This is the first time in the area where students have used clay to play slam and have nausea and shortness of breath.

According to the Department of Education and Training of Da Nang City, the issue of shops in front of the school gate is always reminded in writing by the Department. After this incident, the Department will direct schools to strengthen propaganda and guidance for students; at the same time, sending documents to the People’s Committees of districts and related branches to continue strengthening coordination to ensure safety and security in front of the school gate.