Wan Zhen'er suddenly stood up, went to the bookcase nearby, and started rummaging around.
Zhu Qizhen was taken aback and thought to himself, I'm telling you something serious!
I am the emperor, and when I talk to you, I use such polite words as "unkind invitation". Why are you running away?
But Wan Zhen'er's mind was filled with medical books and she didn't seem to listen to her words at all.
"Your Majesty, please see, there is a record here!"
Wan Zhen'er came over holding a book with an unknown name. Zhu Qizhen smiled awkwardly and reached out to take it.
This book records that since the Eastern Han Dynasty, when the troops from Ma Yuan sent troops to Jiaozhi, after the soldiers returned, a kind of scabies began to spread in the Central Plains.
...The appearance is like a fire sore, which is covered with white paste. If it is not cured immediately, the severe cases will often die. After the scab is cured, the scab will turn purple and black, and it will not subside until the age of death. This is a vicious gas.
"Your Majesty, there are more here!"
Wan Zhen'er handed over another book and turned to one of the pages:
...In the fourth year of Yonghui, the sores flowed from west to east and spread all over the sea. Boil sunflower seeds and gnaw them with garlic, and it stopped. If you are anxious for the first time, you can eat less and eat less, so you can build Wuzhong in Nanyang.
The gains from capturing captives are still called captive sores.
After Zhu Qizhen read it, he asked: "What about the treatment of this kind of acne?"
"There are many recorded methods, most of which are methods of detoxification, but..."
Having said this, Wan Zhen'er raised her eyebrows slightly, as if she saw something strange.
"The son of Wang Dan, the prime minister during the reign of Emperor Zhenzong of the Song Dynasty, suffered from smallpox and asked the Emeishan miracle doctor to vaccinate him. He developed acne on the seventh day, and the acne went away very well, but scabs appeared on the 13th."
"Wait a moment!"
Zhu Qizhen suddenly thought of something and took the book from Wan Zhen'er's hand.
"The miracle doctor vaccinates..."
Wan Zhen'er was puzzled and asked: "Does the emperor know this method?"
Zhu Qizhen didn't answer, but he was thinking in his mind.
What kind of sore is vaccination?
Could it be smallpox!
He raised his head suddenly and asked: "Look again, are there any similar records?"
Wan Zhen'er agreed and continued to browse the medical books on the bookshelf.
After a while, I finally found another book.
"In Taiping County, Ningguo Prefecture, the surname was not tested, and the legend of the Dan family was obtained. From there, it spread all over the world. Today, most of the flower growers are from Ningguo... Your Majesty, is this what you are talking about?"
"Exactly!"
Wan Zhen'er nodded, then marked all the records and treatments for acne and put them together.
Zhu Qizhen already had a plan in mind, and he went to read the book mainly to confirm whether his thoughts were correct.
Overall, these records are very similar to the records in Zhu Qiyu's memorials, and it is very likely that they were what later generations would call smallpox.
Unconsciously, the sky became dark, and Wan Zhen'er lit the oil lamp and said, "Your Majesty, it's getting late and you haven't had your meal yet."
"Don't worry yet!"
Zhu Qizhen slowly closed his eyes and searched for the disappeared smallpox virus from the depths of his memory.
In his time, records of smallpox were only seen in textbooks.
Because long before I was born, humans had completely eliminated the smallpox virus.
The virus may have started out as a relatively harmless poxvirus in livestock, but gradually evolved and adapted to become a human disease like smallpox.
Later, people gradually discovered accidental situations similar to cowpox infecting humans.
This is roughly because after humans entered the agricultural age, they domesticated a large number of new animals and lived with them, often in the same house.
As a result, the smallpox virus continued to evolve and quickly adapted to different environments and hosts, finally evolving into a terrifying form with a fatality rate as high as 30%.
What is even more frightening is that such a fatality rate is still in modern society.
If placed in the Ming Dynasty, where medical care was underdeveloped, the fatality rate would have been estimated to be more than half!
And the only way to treat this virus is cowpox!
It can be seen from ancient books that in fact, in Chinese history, someone had long invented the method of treating acne with vaccination.
Sun Simiao, a famous doctor in the Tang Dynasty, applied pus from smallpox aphthous sores to the skin to prevent smallpox. Among the people, variola vaccination became popular.
Cowpox in later generations was caused by cows being infected with human smallpox virus.
However, animals like cattle have innate resistance to the smallpox virus, and they are only slightly infected and will recover in a few days.
People found that if the scabs infected by cattle were re-extracted and transferred to the human body, although scabs would appear, the toxicity would be greatly reduced and the fatality rate would be reduced to almost zero.
Zhu Qizhen suddenly opened his eyes and said, "There is something you need to do!"
Wan Zhen'er hurriedly said: "Your Majesty, if you have any need, just give me your order, and I will do my best!"
"I just said that King Zhou has already set off for Nanhaiwei."
"Yes, I heard this."
"However, before King Zhou left, he did not come up with an effective treatment method. I am worried that his progress will be slow when he reaches Nanhaiwei. In addition, many people there have also contracted the disease, which will not be very convenient for some female relatives.
so……"
Zhu Qizhen hesitated for a moment and continued: "I am going to send you there!"
Wan Zhen'er was stunned for a while. She didn't expect that the emperor would assign such an important task to herself.
"My slave will leave tomorrow!"
Zhu Qizhen smiled faintly and said: "The situation is urgent, but I am not in a hurry to do it for a long time. Before you go, I will explain to you clearly the method of vaccination."
Wan Zhen'er nodded: "I must study seriously!"
"Look at these records..."
Zhu Qizhen took out all the records about vaccination and treatment. After Wan Zhen'er read them all, he said: "Actually, it is not difficult to treat this disease. All you need is a cow."
Wan Zhen'er wondered: "What kind of cow?"
"Just an ordinary cow!"
Zhu Qizhen explained: “Extract the malignant sores from humans and plant them into cows. When the cows become ill and develop malignant sores, they can then be planted back into humans!”
Wan Zhen'er was puzzled and asked: "Why is this?"
"This... I can't explain clearly. Anyway, just remember it!"
"Okay, I'll take note of this!"
"besides……"
Zhu Qizhen still had something to say, but as soon as he opened his mouth, he suddenly became hesitant.
Wan Zhen'er asked: "Your Majesty, do you have any other instructions?"
"I just think... in what capacity did you go?"
"This slave is a doctor of the Ming Dynasty, with an official title of fifth rank."
"I'm afraid it's not enough."
"Why?"
Zhu Qizhen smiled and said: "This official in the inner palace has never cared about external affairs. If you go to the front line with your identity, I'm afraid, I'm afraid..."
Wan Zhen'er said: "Your Majesty, don't worry. When I go to the front line to treat illnesses and save people, I rely on my ability, not my official title."
Zhu Qizhen seemed to have made an important decision and asked: "Actually, I can give you a new identity."