Chapter 2985 The Real World 335

As for the medicinal materials, Bei Yutang had already prepared a lot, all of which were used to treat smallpox.

The most important thing is the vaccinated cowpox.

In the next thousand years, it will be discovered that vaccination with cowpox can effectively prevent smallpox infection.

Cowpox, a type of smallpox that occurs in cattle, is less toxic than smallpox.

Vaccination with cowpox is to put this virus on the human body. This kind of virus can be carried by most people. Once it is carried over, antibodies will be produced in the body.

Such people are naturally fearless when encountering smallpox. But the cowpox method is feasible, but also dangerous.

One of them is that if someone fails to carry it during the vaccination process, they will die.

Another disadvantage is that although smallpox is encountered, it is basically not re-infected. This is only relative, and there will be people who are still infected in history, but this is only a minority.

In addition to vaccination against cowpox, to fight smallpox.

There are two other methods in history, which are equally possible, and their essence is similar, but compared with those two methods, vaccination with cowpox is the most effective.

Cowpox, Bei Yutang naturally does not have it, but the omnipotent system does.

"Ming. Give me the cowpox."

[Host, since the last time you asked about the type of cowpox, this system specially checked it out, and there are really three types of cowpox for you to choose from. 】

[One is common cowpox, which is moderately toxic. One is inferior cowpox, which is highly toxic. The last one is the superior cowpox, which is the least toxic. Host, what do you want? 】

"price?"

[Ordinary, ten points. Inferior, five points. Excellent, fifteen points. 】

"Wait." Bei Yutang said without thinking.

Ming was amazed, [Host, you are sure to want fifteen points. A cowpox, not many people are vaccinated. There are thousands of people in Yanzhou and even in the Southern Tang Kingdom. Are you sure you want fifteen points? 】

"When did you talk so much nonsense?" Bei Yutang asked rhetorically.

Ming suddenly stopped talking.

[The exchange is successful. 】

After Bei Yutang got the cowpox, he took eleven people to the ancestral hall.

Afterwards, he ordered the entire ancestral hall to be isolated, and no one else was allowed to come and go at will.

The eleven, including the village chief, looked nervously at Bei Yutang, who was wearing white clothes and a mask.

"Now I'm going to inoculate you one by one, who comes first?"

"I'll come first." A strong man came out first.

Bei Yutang took out the cowpox exchanged from the system from a sealed jar and began to inoculate him. After finishing, the strong man was still confused.

"Is that all right?"

"Yes, all right."

The strong man said happily: "I'm fine."

Bei Yutang ruthlessly pierced his sweet dream, "This is the first step. After a few days, it's good, it's really good."

The strong man was stunned.

Next, Bei Yutang inoculated them with cowpox one by one, and then let them stay in their respective positions.

All three meals a day are provided by the villagers outside, and no one can leave the ancestral hall.

That night, one after another, people started to have a fever.

"Sister Mu, the village chief has a fever." Daixiang shouted.

After everyone in the house heard the voice, they all looked at the village chief. The village chief was the first to have a fever, and everyone gathered around.

"What happened?" someone asked.

"The effect is starting to appear." Bei Yutang explained in a low voice.