Schistosomiasis is an infectious disease that endangers human health, how can the spread of the dise

To prevent schistosomiasis, first of all, the water source at home must be clean, and we should not drink raw water directly from the water pipe, and we should also pay attention to the contact with the infected water, we should go to the local blood prevention department in time for examination and early **, and the patient can not have too much nervousness.

I think try not to go down into the gutter. Also, be sure to wear rain boots on rainy days. Bathe frequently every day and disinfect more.

It is necessary to isolate the infected people, effectively cut off the transmission route, and protect those with relatively low immunity.

Schistosomiasis is a parasitic disease that can be transmitted to both humans and animals. The life history of schistosoma is complex. Adult worms live in the blood of the mesenteric veins and portal veins of humans, cattle, pigs, or other mammals, so humans and such animals are referred to as adult hosts or definitive hosts.

The prevention of this disease focuses on snail eradication, and comprehensive measures such as general investigation and treatment of sick animals and sick animals, management of manure and water sources, and personal protection are adopted. (1) Management of the source of infection: In the endemic area, the general survey of patients and sick cattle is carried out every year, so that no diagnosis is missed.

In general, a single dose of praziquantel** can be used in chronic patients, which can significantly reduce the infection rate in the population. Sick cattle can be injected intravenously with nitthion (2% suspension), and the dose of buffalo is 2mg kg for cattle, with a rate of more than 98%. (2) Cutting off the transmission route Snail extermination is the key to preventing the disease.

It is necessary to find out the snail situation, adapt measures to local conditions, use physical snail killing or drug snail killing method, and insist on repeating it. Combined with the construction of water conservancy and the transformation of the breeding environment of snails, according to local conditions, methods such as reclamation, breeding, flooding, soil burial and fire can be selected. Commonly used snail killers are sodium pentachlorophenol and niclosamide.

Sodium pentachlorophenol has a good killing effect on adult snails, young snails and snail eggs, but it is also toxic to crops, fish and humans. Niclosamide is only toxic to fish, and its snail killing efficiency is high, the effect is long, the action is slow, and the combination with sodium pentachlorophenol can improve the efficacy. Strengthen manure management and water source management to prevent human and animal manure from polluting water sources. The feces need to be treated harmlessly before they can be used.

Treatment methods can be adapted to local conditions, such as the promotion of three-format manure tanks or biogas manure tanks. In endemic areas, it is recommended to drink tap water, well water or store river water for 3 days, add 1g of bleaching powder per load of water if necessary, or 1 tablet of bleaching powder essence, and it can be safely used after 15 minutes. (3) Protection of susceptible populations:

Try to avoid contact with infected water, especially children should not be allowed to swim, bathe, play in the water, catch fish and shrimp in the infected water. When it is necessary to come into contact with infected water due to work needs, personal protection should be strengthened, such as impregnating clothes and pants with 1% niclosamide alkaline solution, which has a preventive effect on the invasion of cercariae, and is soaked with 0 5% croton solution, sprayed with 5% croton solution, or 0 25% foreign flower decoction is impregnated to kill, all of which have the effect of killing snails. Fatty acids are used as the matrix, alkali saponification is added, and 2% niclosamide and turpentine are mixed to make a protective agent, which has the effect of killing cercariae.

Schistosomiasis vaccines are already used in livestock, and the development of schistosomiasis vaccines in recent years has the potential to produce effective vaccines suitable for humans.

Avoid contact with infected water, apply protective oil or wear protective equipment such as rain boots before entering the water.

First, schistosomiasis is a chronic parasitic disease caused by Schistosoma schizosomes, which is mainly endemic in 73 countries in Asia, Africa and Latin America, and affects about 200 million people. There are two main types of schistosomiasis, one is intestinal schistosomiasis, which is mainly caused by Schistosoma mansoni and Schistosoma japonicum; The other is urinary schistosomiasis, which is caused by Schistosoma haematoidosis. The main epidemic in China is Japanese schistosomiasis.

Second, schistosomiasis is usually transmitted because the host eats some food that contains schistosomiasis, and it is also possible that schistosomiasis is blood-borne.

Thirdly, in each link of the transmission route, the feces containing schistosomiasis eggs contaminate the water source, the presence of snails, and the contact of the masses with the infected water are three important links. The way in which manure pollutes water is closely related to local agricultural production methods, residents' living habits, and livestock breeding and management. When there is a positive snail infected with Schistosphium finch in the water body, it becomes infected water and is infective to humans and animals.

Human schistosomiasis infection can generally be divided into two categories: production sewer and domestic sewerage.

Answer]: A cercaria, larvae, adults and eggs can cause damage to the host, but the lesions caused by the infiltration of cherry eggs by the insect chain are the most serious, and the harm to the body is also the greatest. Schistosomiasis eggs cause major lesions to the human body, and the basic pathological changes are egg nodules, which are manifested as clusters of eggs in the liver, intestine and lung tissues, which lead to diffuse fibrosis in the tissues of the tissues in the later stage.