The fleet loaded with relief supplies followed the canal system and finally arrived in Suzhou City.
When Qiu Feng saw Li Ang again, he was startled by the bloodshot eyes, "Risheng...are you okay?"
"It's okay, I just haven't slept much lately."
Li Ang forced a smile. These days, he lived in the ward and only slept three or four hours a day. While using the thread to treat the most severe schistosomiasis patients, he was also looking for ways to suppress the water poisoning epidemic.
"follow me."
He turned around and motioned for the visitors from Chang'an to follow. Qiu Feng and others looked at each other and silently followed Li Ang through the courtyard of the hospital to a room.
The room was filled with information and documents. Li Ang used his telekinesis to clear the seats for everyone. He took a break with tea and said slowly: "I have found out the transmission route of schistosomiasis."
"Um?!"
Qiu Jing, the chief physician of the Imperial Medical Office, was surprised and delighted, "What is it?!"
Li Ang raised his palm and released his telekinesis, causing the papers on the table to spread to both sides, revealing the bottles and jars hidden underneath.
“The samples contained in these five bottles are all schistosomiasis.
In other words, they are the five survival stages of schistosomiasis.
Adult worms, eggs, miracidia, cercariae, and juvenile worms. "
Li Ang pointed to the glass bottle and said, "Similar to the transformation from cocoon to butterfly, schistosomiasis also has different appearance and behavioral characteristics at different stages of life.
Schistosoma in the cercarial stage will use the puncture thread on the body to burrow into the host's skin, take off its tail, and turn into a child worm.
Schistosoma in the child stage will enter the bloodstream, move to the intestines and blood vessels of the host body, and then develop into adult worms.
In the adult stage, schistosomiasis will reproduce and lay eggs, with nearly a thousand eggs being laid every day.
Some of the eggs deposited in the host's body can cause symptoms such as ascites, jaundice, and splenomegaly. Torturing the host and making it weak. "
He stood up, walked to the side room, and brought two iron brackets over.
On the stand were placed the headless corpses of two rabbits, both of which had been disemboweled and their fur fixed with hooks to expose their internal organs.
Qiu Feng frowned slightly and said, "This is..."
"Two rabbits, one is infected with schistosomiasis and one is not. Look at the difference."
Li Ang placed the bracket on the table. Qiu Feng and others observed it for a while and said uncertainly: "The intestines of this one are whiter? The liver is also covered with white spots."
"That's right."
Li Ang nodded and used his mind power to pull up the rabbit's mesentery so that Qiu Feng and others could observe it better. "What's entangled in the blood vessels is the schistosomiasis."
"so much?!"
Qiu Feng felt his scalp was numb, and the rabbit's blood vessels were densely filled with white lines, making him feel uncomfortable just by looking at it.
"Yes. As for the white spots on the liver, they are schistosomiasis eggs."
Li Ang said calmly: "This is just a small rabbit. Huge people and cattle are more seriously affected by schistosomiasis."
"..."
Everyone in Chang'an was speechless. On the way here by boat, they saw many patients with swollen abdomens, so that people began to have a proverb to describe schistosomiasis patients -
Her belly was swollen like a winter melon, her face was as yellow as a cucumber, and her hands and feet were as thin as a loofah.
Li Ang continued: "The other part of the eggs produced by the schistosomiasis in the host body will be excreted together with the feces.
This is also the main route of schistosomiasis transmission. "
King of Light Li Shan was slightly startled, "Feces?"
"I didn't expect it. The final form of grains and grains is actually the beginning of the end of human life."
Li Ang pointed to the bottle containing the eggs and said: "After the feces flows into the water, the miracidia in the eggs hatch out, penetrate into the body of the intermediate host, reproduce in the body of the intermediate host, and turn into cercariae.
The cercariae then swim in the water, looking for a host, parasitizing, and completing the cycle.
And this intermediate host is a snail.
To be precise, a specific type of snail. "
Li Ang waved his hand, and the box in the corner opened, and several glass jars floated out of it.
They are filled with tiny objects as big as grains of rice. You have to turn them on the table and look carefully to see that they are snails with sharp ends.
Li Ang said: "I asked Shentu to offer sacrifices. I used the observation ability of a Zhuxiao monk to observe the epidemic water for a long time before finally confirming that,
The cercariae in the plague water escape from the body of this tiny snail.
By following the clues, we figured out the entire life cycle of schistosomiasis. "
"Just a small contribution."
Shen Tuyu waved his hand and said: "After repeated experiments, we found that
Schistosoma miracidia are too fragile to parasitize larger snails or humans.
It can only parasitize this tiny snail, which is slightly larger than a grain of rice, and develop inside the body of the snail. "
“And because snails like to live in grass in wet areas,
River channels, rice fields, irrigation ditches. Gu Tu
Suzhou has a developed water system. Wherever there is water, there are likely to be snails, which may become epidemic. "
Li Ang said: "People have to work in rice fields and fish in lakes, so they will inevitably come into contact with water and risk being parasitized at all times.
Spring plowing will begin in February or March.
What we can do now is to kill the snails as much as possible before spring plowing. And then kill the schistosomiasis.
Here are some of my suggestions. "
He picked up a stack of documents from the table and handed them to Li Shan.
Li Shan took the document and read it carefully, "Drug killing?"
"That's right."
Li Ang took a deep breath, "After the tea oil is extracted from the tea seeds, the remaining residue is pressed into cakes. Such tea cakes are also called tea cakes in Lingnan Road.
The tea extract is toxic, and fishermen in Zhenzhou will use it to poison fish. The poisoned fish meat is harmless to humans.
In addition, tea leaf extract can also kill oncomelania snails, with a killing efficiency of about 30%. "
Li Shan didn't ask stupid questions like "How come it's only 30%?". Just looking at the densely packed tables, data, experimental logs, and plan demonstration process on the paper is enough to prove that this is the most suitable drug at this stage.
Li Shan said: "Okay. I will go to discuss with the prefect immediately and collect tea cakes from surrounding counties."
"Um."
Li Ang nodded and said: "In addition to killing with drugs, it is more important to change the environment. The snails move slowly and will die in pieces if they are buried in the soil.
Considering that they often live in irrigation ditches, manpower can be called in to fill in old ditches and build new ones. Bury the snails in the soil.
Secondly, you can also cut off reeds and turf that are prone to breeding snails;
Use fire to burn the reeds around the Taihu Lake system;
Build dams to enclose new farmland to prevent the spread of snails;
In addition, the feces must be managed - patients infected with schistosomiasis will have a large number of eggs in their feces.
After feces enters the water, it will pollute the water body.
I suggest that on the one hand, let the ceramics workshop produce as many pottery and porcelain pipes as possible, splice them together, and bury them underground to form a sewer system like the one in Chang'an City.
On the other hand, public toilets and septic tanks should be built in cities and suburban towns. Private dumping of feces is strictly prohibited and feces should be processed centrally to prevent insect eggs from entering water sources.
At the same time, many people draw water from the river and wash their clothes by the river, which is too easy to become infected and parasitic.
A large number of wells needed to be built.
Finally, with spring plowing around the corner, people will inevitably go to the water for activities.
A large amount of quicklime, rosin, pure wine, etc. need to be used for disinfection.
Distribute cloth leggings, oil-soaked socks, etc. to farmers..."
The more Li Ang spoke, the more frightened Qiu Zhen and others became.
On the one hand, they admired Li Ang's outstanding ability and orderliness.
On the one hand, I appraised the enormity of this project in my heart.
For a single item, at least 200,000 manpower must be mobilized to dig new and fill old ditches.
plus the burning of reeds,
Build dams, wells, public toilets, sewers,
Distributing socks, etc.,
The manpower, material resources, and financial resources that need to be mobilized are simply unimaginable.
"good."
Unexpectedly, Li Shan nodded in agreement after just thinking about it.
Seemingly noticing the astonished looks of others, Li Shan explained: "People from Luli Academy will also come to help."
I see.
Everyone suddenly realized,
Local business houses, wealthy households, civilian husbands, officers and soldiers from the imperial court, plus monks supported by the Academy and Luli Academy. That does have the possibility of realizing the plan.
One monk is worth fifty civilians,
But fifty civilians may not be able to replace the monks.
Everyone was so excited for a moment,
Li Shan chatted with Suzhou Sima for a while, and immediately went to the Prefect's Mansion to discuss the plan with the Suzhou Prefect - he was originally the King of Light and had higher authority.
Physicians Qiu Zhen, Qiu Quan and other doctors received the list of past drugs given by local hospital staff and discussed what drugs should be used.
Only Qiu Feng noticed the fleeting and deep fatigue deep in Li Ang's eyes.
and sadness.
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