There was a kind of big belly disease in China, the sick person was as thin as phosphorus, the stomach was swollen, and the whole body was weak, and there was a limerick poem at that time to describe the state of being infected with bloodsucking worms: "A hoe with two catties of iron, when you get it in your hand, you want to rest; when you go down to the field to hold a stick, you want to be sleepy when you don't reach the field"
Speaking of bloodsampires, in the eyes of many people, it has become a "noun", and it is difficult to associate it with a blood-sucking "demon".
However, just a few decades ago, bloodsucking insects were still raging in many parts of the mainland, causing many human tragedies, there is a word called "ten rooms and nine emptiness", in China's long history, there are not many times when this word is used, but at that time, "bloodsuckers" created such tragedies. And this is not alarmist, it is the real situation that happened in China at that time.
At the beginning of the founding of the People's Republic of China, a survey was conducted on the areas infected with blood-sucking worms, and it was found that blood-sucking worms spread throughout most of the southern parts of the country, affecting 12 provinces, municipalities and autonomous regions such as Jiangsu, Zhejiang, Anhui, Jiangxi and Hubei, with more than 10 million people infected with blood-sucking worms and more than 100 million people threatened by blood-sucking worms. You must know that when New China was first founded, the population of the mainland was only a few hundred million.
In the course of the investigation, it was found that 1,362 villages in Jiangxi Province, which were most severely infected with bloodsucking insects, had become "ghost villages" due to bloodsucking insects. In the bloodsucking area of Jiangxi, in the Lantian area of Yujiang County, Jiangxi, more than 20 villages were completely destroyed, not a single living person could be seen, and 10,000 acres of fertile land became wilderness.
It was this survey that made the country realize that it was urgent to eradicate the "bloodsucking worms", otherwise, as the population migrated, the number of people infected with bloodsucking worms would be even larger and would cause greater harm.
Immediately, a nationwide campaign to eradicate bloodsucking insects was launched, and New China used only three moves to eliminate the bloodsucking insects that had been raging on the mainland for more than 2,000 years. What are the three tricks and how to solve them?
Japan bloodsucking insect
In fact, it is not an exaggeration to say that bloodsucking insects have been raging on the mainland for 2000 years, and after scientists analyzed the soil of Mawangdui, they found bloodsucking eggs inside. The Mawangdui belongs to the ancient tomb of the Western Han Dynasty, which has a history of more than 2,100 years, that is to say, these 2,000 years are still less to say.
Schistosoma is a parasite of the genus Schistosoma of the family Schistosoma of the order Recolonists of the class Trematodes, also known as Schizome fluke. There are three main types of schistosomiasis that live in humans: V. mansoni, V. aegypti and Schistosoma japonicum.
The bloodsucking insects that have been raging in the mainland for many years are mainly Japanese bloodsucking insects, which were discovered by Japanese scholars in 1904 and then named after Japan, and the distribution areas of Japanese bloodsucking insects are mainly in East Asian countries such as China and Japan.
The bloodsucking insect is special, it belongs to the dioecious, that is, the male and female are held together is a necessary condition for development, the length of the male is about 10-20 mm, and the length of the female can reach 20-30 mm. Single-sex males, or single-sex females, are not a threat even if they are infected, because they do not develop properly.
In the picture: the slender ones are females, and the outer thicker ones are males
After the bloodsucking worm enters the host's body, it will give birth to hundreds of eggs every day, some of these eggs hatch, some of which are excreted with excrement, and after encountering the water source, these eggs are hatched in the water and become tiny larvae, which quickly find a new host in the water - the snail with its keen sense of smell.
The seemingly inconspicuous mollusk has become an indispensable intermediate link in the life of the bloodsucking worm, and after the hairy larvae enter the body of the snail, they will absorb nutrients from the body of the snail and metamorphose into cercariae.
At this time, the cercariae will break away from the snail and return to the water. At this time, the cercariae not only carry oral and abdominal suction cups, but also have five pairs of puncture lines in the middle and back of their bodies.
It waits for an opportunity to puncture the skin of the host and enter the host's body when humans or other mammals enter the water, or drink unclean water.
After entering the host, it will take off the puncture line at the tail and move to the parasitic site in the body, at this time, the bloodsucking worm can only be called a juvenile worm until it absorbs the nutrients in the host body and grows into an adult, and then gives birth to eggs, which are excreted with the host's excrement, forming a cycle.
Why does my stomach swell after being infected with bloodsucking worms?
Generally, after being infected with bloodsucking worms, there will be a strange symptom, that is, the whole body is skinny as phosphorus, but there is a huge belly, and it is for this reason that after being infected with bloodsucking worms, there is a saying in the folk, that is, big belly disease.
In fact, the eggs that cause the most damage to the host are the ones that the bloodsuckers themselves do.
After the bloodsucking worm enters the host, it mainly parasitizes the host's liver, and after absorbing nutrients, hundreds of eggs will be born every day, and after these eggs hatch, they will give birth to eggs again, so as long as it takes about two generations, it will reach a terrifying number.
After a bloodsucking worm gives birth to a large number of eggs, the host will have a rejection reaction, and the immune cells will trap and kill the eggs in order to prevent them from spreading in the body.
Although the eggs were killed, what to do with them became a problem. In the end, all the eggs are sealed up and become scars, which are the result of fibrosis and become harder.
When the scar accumulates more and more, fibrosis appears throughout the scar. Most of the bloodsucking worms are concentrated in the liver, and when the liver is fibrotic, it all hardens. Eventually, ascites and the stomach swelled, and at this point, it would have been difficult to treat with the level of technology of decades ago.
How does New China solve the problem of bloodsucking worms in three steps?
The principle of the reproduction and lesions of bloodsucking worms has been mentioned earlier, and the researchers of New China also discovered this at that time.
With no technology, no capital and no experience, a bloodsucking worm that has been raging in China for more than 2,000 years can be solved. But at that time, the new country decided to work together to solve the problem of bloodsucking insects that had plagued the Chinese for more than 2,000 years.
Before solving the problem of blood-sucking worms, the State at that time took full account of the opinions made by the experts. How to get rid of bloodsucking insects is mainly divided into three steps:
The first step was to strengthen the awareness of bloodsucking insects and prevent them, and guide the farmers at that time to develop good hygiene habits. At the beginning of the founding of the People's Republic of China, the illiteracy rate in this land reached more than 80%, and it was not easy to make them aware of the dangers of bloodsucking insects and their prevention work.
But propagandists are using some simple and easy-to-understand truths, compiling some smooth slips, these slips are not only catchy and easy to remember, but also play a role in the effect of dissemination, it is under the country's vigorous propaganda, people gradually formed a sense of health and safety, for example: Chinese drinking boiled water habits are formed from that time.
The second step is to cut off the important transmission route of the bloodsucking worm, which is the intermediate host - the snail, if there is no snail, the bloodsucking worm lacks the intermediate link of metamorphosis, and the bloodsucking worm cannot metamorphose into cercariae, and then harm humans.
Under the propaganda of New China, the whole country set off a movement to eliminate snails, some bloodsucking insects in the hard-hit areas, organized a large number of laborers, even if the river water "dry", but also to eliminate the snails, after statistics, at that time the 12 provinces, municipalities and autonomous regions where the bloodsucking insects were prevalent in the country, the total area of eliminating snails reached more than 1.5 billion cubic meters.
The third step is to cut off the source of infection, as bloodsucking insects are mainly transmitted from the excrement of the host, and in the past, people would discharge the excrement of humans and animals directly into rivers or paddy fields.
In order to solve the problem of bloodsucking worms, the excrement excrement excrement of humans and animals is managed in a unified manner, so that it does not flow into the river to expand the source of infection, and these excrements are managed in a centralized manner by adding pesticides to stifle it at the source.
In the end, after these three steps of processing, in just a few years, the problem of bloodsucking insects that has ravaged the mainland for more than 2,000 years was solved.
Epilogue:
Many people wonder why bloodsucking insects have been raging in China for more than 2,000 years, and why are they so serious at the beginning of the establishment of New China?
This is mainly related to the environment at that time, when many years of turmoil, led to the migration of people, but also provided favorable conditions for the spread of blood-sucking insects, and in the ancient turmoil, although there were migrations, but the progress of transportation, its migration is not comparable with a few decades ago.
Nowadays, the bloodsucking insects are only restricted, not completely eradicated, do not drink unclean water sources outdoors, even if you want to drink, you must boil and drink again, but now that science has progressed, there are drugs against the bloodsucking insects, so it will not be as helpless as before.