Chapter 528: Vaccination at Yanguan

"Your Highness, how can this be done? Let me go first."

The King of Yan has told them that if the cowpox is inoculated into a person, the person will also get sick, but the symptoms are mild.

This is enough to prove that vaccination with cowpox is still a little dangerous.

How could he risk his life as the King of Yan?

Zhao Xu waved his hand. He knew what Hu Yan was worried about.

However, unless there is an immune deficiency, there is no problem with vaccination with cowpox.

The Ninth Prince was once locked up in a dirty house by Zhang Han for a long time, but he had no problems with his health.

There was no problem with immunity, so he was very confident in himself.

Moreover, he was the first to be vaccinated, also to set an example.

He had been vaccinated, so the soldiers naturally had no reason to resist.

"No need to say more." At this time, Zhao Xu pulled out a dagger from his waist and gently scratched his wrist, only cutting the skin, without bleeding.

Then, he used the dagger to pick up some pus from the ulcer of the cow and smeared it on the scratch.

"This is the process of vaccination. Do you see it clearly?" Zhao Xu asked.

Shi Zhengui and Hu Yan looked at each other. They thought it would be complicated.

It turned out to be so simple.

But they thought again that if the King of Yan did not show them, they really could not guess the method of vaccination.

"See clearly." The two said in unison.

Zhao Xu nodded, "This king asked the Armory to make a batch of special daggers for you, which are specially used for vaccination. Now you go back and practice."

The special dagger he said was naturally a small knife similar to the modern scalpel.

After saying yes, the two led everyone away.

Another day later, another 20 cows with cowpox were driven to Yancheng.

Zhao Xu left one to Liu Fu and asked him to drive it to the herd outside the city, and at the same time make wounds on other cows and smear cowpox pus on other cows.

For the remaining cows, he gave one to each bastion, and the rest were all driven to Yanguan.

At the same time, he asked Hu Yan and Shi Zhengui to be quick.

Cows will only have pustules in the early stage of cowpox. After half a month, cowpox will scab and fall off and heal itself.

If the vaccination is not completed within this period of time, the cow will be useless.

After issuing this order, he and Shi Zhengui prepared to go to Yanguan.

As soon as he left the palace, he saw Chang Wei rushing over in a dusty manner.

He had just returned from Yanguan.

"You came at the right time. I'm going to Yanguan now, and you go to the bastion." Zhao Xu said to Chang Wei.

Then he told the story of smallpox.

Chang Wei was surprised and angry when he heard it, and his face was red, and his eyes almost burst into fire.

"This shameless and despicable method, Muller Hong can really use it, it's really a son of a bitch." Chang Wei cursed.

Then, he did not stop, and went to the bastion according to Zhao Xu's order to supervise the vaccination of cowpox.

Zhao Xu hurriedly called him back and gave him a few more instructions before letting him go.

These two days, he thought about the way Beidi spread smallpox day and night.

First, let the servants who have smallpox attack the city, and then pretend to be defeated, leaving a pile of corpses, and the soldiers of Yanguan will be infected when they clean up.

Second, use artillery or bows and arrows to throw smallpox-carrying items into Yanguan, and the soldiers will be infected when they clean up.

For the first option, he thinks the probability is very small.

Because when the soldiers find that the local soldiers have something on their bodies when they clean up, they will definitely be alert.

In this way, there will be no large-scale infection.

Secondly, this is too risky. If the servants rush back, the Beidi soldiers will be unlucky.

The second option may be much greater, and if it were him, he would also choose this.

Just select some soldiers who have been infected with smallpox but not dead and shoot the things into Yanguan with bows and arrows.

So, what he said to Chang Wei was that in this case, let the vaccinated soldiers deal with these things.

Other soldiers were separated from these soldiers and did not contact each other.

After two days of trekking, Zhao Xu and his party arrived at Yanguan.

When Mo Yu learned that Zhao Xu was coming, he immediately led the Yanguan generals to greet him at the south gate.

After the ceremony, Mo Yu looked at the fourteen cows behind Zhao Xu with a confused look.

These two days, Zhao Xu was a little annoyed when he explained to each person he met.

However, this matter was serious, so he explained it to Mo Yu in detail again.

Mo Yu heard this and cursed the eighteen generations of Beidi without caring about his image, just like Chang Wei.

Zhao Xu waited for him to vent his anger and said, "Don't say anything extra. Organize the soldiers to come for vaccination immediately."

They were delayed for another two days on the road, and there was no time to delay any more.

"Yes, Your Highness." Mo Yu and the generals immediately returned to their respective barracks as if their butts were on fire.

Zhao Xu led Shi Zhengui and fifty others directly to the parade ground.

Not long after, a large number of soldiers gathered under the leadership of the generals.

At the gate of the city, he had already told the generals to give a brief explanation to the soldiers.

So although they were curious, they didn't find it strange.

In addition, they learned that the King of Yan had also been cut with a knife, so there was nothing to say.

Before the soldiers arrived, Zhao Xu asked Mo Yu to set up a tent in the parade ground and stuff the cows in it.

This was also to maintain the mystery of vaccination.

In this way, even if the soldiers knew that it was related to cows, they would not know that it was related to cows with cowpox.

Of course, in addition to this, the generals would also order the soldiers to keep their mouths shut.

"Let's start."

Everything was ready, Zhao Xu said to Shi Zhengui.

He placed ten long tables in front of the tent, and Shi Zhengui and others sat behind the tables.

Then, he said to Mo Yu, "This is also a kind of charge, you generals should come first."

One sentence he often said to the generals in the military school was that the generals should take the lead.

They can't be like the imperial guards of Dasong, sending soldiers to die and taking the benefits for themselves.

For any general like this, he has no place in the royal army.

Mo Yu smiled and sat in front of Shi Zhengui.

Since his father was killed, he has long been indifferent to life and death.

Now he has only two wishes, the first is to continue his father's will, guard Yanguan, and expel Beidi, and the second is to find the murderer who killed his father.

For the first one, he believes that the King of Yan will lead him to achieve it.

And for the second one, he believes it won't take too long.

He also has friends in the capital, and knows what the powerful families are doing recently.

The world of Dasong seems to be in a state of separatism.

A chaotic world is coming, and in the chaotic world, they may not fight with the Xiao family.

At that time, he must catch Xiao Yuanshan with his own hands.

"Palm facing up." At this time, Shi Zhengui put Mo Yu's arm on the table and turned to enter the camp.

When he came out, he wiped the scratch on Mo Yu's wrist with the knife in his hand.

"Next." Shi Zhengui looked like a business.

After Mo Yu was vaccinated, he came to Zhao Xu, "Your Highness, how many soldiers can be vaccinated in total?"

"About 20,000 people." Zhao Xu said.

The pus of a cow is enough for 200 people to be vaccinated now.

After the pus dries up, we have to wait for the ulcers of the cow to continue to accumulate pus.

And in the future, the pus will only get less and less.

In the end, it will be good for a cow to vaccinate 1,300 or 1,400 people.

And cows that have had cowpox, like humans, will not get cowpox again.

So, cowpox will only get less and less.

This is also the reason why he came first after the soldiers.

For the next few days, Zhao Xu stayed in Yanguan.

He wanted to see the methods of Beidi with his own eyes.

But on the second day in Yanguan, he had small pustules on his body and had a low fever.

In the next two days, the soldiers who had been vaccinated also experienced this condition.