As the School of Science begins, the Department of Medicine is undergoing smallpox vaccination, and all students are vaccinated to prevent the smallpox virus from breaking out in the university area with a large number of people. At that time, a large number of reserve elite talents of the empire will be lost.

In order to prove the effectiveness of the new vaccine, Chu Yun took the lead in injecting the vaccine in order to eliminate the public's concerns about the vaccine. In addition to vaccines, there are also unknown things such as cameras that make the public feel scared.

As one of the leaders of the smallpox vaccine project, Xiao Xiu'er came to Chu Yun's mansion with the vaccine. She couldn't help but feel nervous. She was not only afraid that Chu Yun would be imprisoned because of adverse reactions, but if something happened to Chu Yun's family, who was kind to her, she would probably be uneasy in her life.

"Although the mortality rate is very low, it is still possible to cause death. I wonder if you are going to take this risk, Lord Jung-chan?" Xiao Xiu'er asked cautiously.

"Isn't it just a vaccine? Just follow the normal process." Chu Yun said without mind.

Xiao Xiu'er took out a new metal tube syringe. At this time, Jiuzhou Jun had been planting for several years in Hainan Rubber Garden, and the second batch of rubber trees could start collecting natural rubber, and had a lot of natural rubber reserves.

Even so, many rubber-related plastic chemical technologies have not been opened yet and there is no special plastic factory, so it is still impossible to produce cheap one-time plastic pipe syringes.

Metal syringes can be disinfected by boiling, and needles can be polished and then used and disinfected, but there is also a risk of infection during injection. In order to ensure foolproof, Xiao Xiuer specially brought unused metal syringes.

Ling'er, who was held by Ella, saw the slender metal needle for the first time. She seemed to be afraid of the metal needle and pulled Ella's clothes uneasy.

Chu Yun didn't feel anything. Pinhole injection was already very kind. Some ancient syringes and medical devices were more violent, such as enema devices that achieved the same purpose as pinhole syringes.

Xiao Xiu'er was a little nervous, and sweat was involuntarily oozing from her forehead.

"Don't be nervous, otherwise something will happen easily." Chu Yun was not afraid of injections, but when he saw Xiao Xiu'er, who was a doctor, was nervous, and his hand holding the metal syringe was shaking slightly. Chu Yun couldn't help but be afraid.

"Yes." Xiao Xiu'er took a deep breath after Chu Yun's reminder, and then calmed down.

Chu Yun found that he had overestimated the early syringes. The needles of the early syringes seemed to be thicker, and the pain was several times that of Chu Yun's original pain.

Just seeing such a pinhole can make many people retreat.

In order to maintain his image, Chu Yun just frowned slightly and did not snort.

After Chu Yun, Ella also participated in the vaccine injection.

Seeing that Chu Yun and Ella were both safe after receiving the smallpox vaccine, Xiao Xiu'er breathed a sigh of relief. If neither of her parents had any problems, then Ling'er probably wouldn't have any problems.

However, when it was Ling'er's turn, he didn't dare to face the metal pinhole. He was obviously frightened and cried out in a flash.

"Be good Ling'er, you won't get sick after getting the injection." Ella was comforting Ling'er.

"Sister has a candy here. If Ling'er finishes the injection, this candy will be given to you." Xiao Xiu'er has served as a doctor in the Military Head's Mansion for a long time and has her own way to comfort Ling'er.

However, this time Ling'er realized the pain of the injection and was not tempted by candy. She refused to reach out and kept grabbing Ella's clothes and bitterly kept.

Chu Yun said with his face: "Hurry up and get the injection, otherwise you will be sent to the military academy in two years!"

After Chu Yun shouted, he didn't know if Ling'er could understand what it meant to send him to the military academy, but he obviously felt that his stern father was angry and immediately choked and cried.

"After Ling'er's injection, will you take you out for fun, okay?" Ella wiped away his tears, then grabbed one of his small fists and gave Xiao Xiu'er a wink.

Xiao Xiu'er gently pressed Ling'er's arm, and then wiped the part where she wanted to get the injection with alcohol.

Ling'er looked like saying goodbye, and her eyes were filled with tears as the needle hole penetrated into her skin. But Ella and Xiao Xiu'er held him down, and there was a father with a stern face next to him. He was doomed and didn't even dare to cry.

Chu Yun was indifferent and preventing smallpox was important, especially in today's era, even if there was a human acne vaccination method invented by China, there were very few people with smallpox antibodies, and the whole world was shrouded in the horror of "plagues" such as smallpox, plague, and malaria.

With the opening of the maritime ban and frequent trade with the world, smallpox may break out at any time, or in other words, small-scale smallpox incidents break out from time to time under many provinces, but they are collectively called "plague" by historical books, or the scale is small and unrecorded.

As his son, Ling'er may be active in various provinces and even overseas in the future. The probability of smallpox infection is really great. A little pain now can minimize the risk of smallpox infection. Why not do it?

"Okay." After Xiao Xiu'er received the injection, she used alcohol cotton to help stop the bleeding.

"This metal syringe looks a bit scary. I am afraid that ordinary people will have Ling'er's reaction." Chu Yun said with some fear when he saw Xiao Xiu'er put away the metal syringe.

"There is also the risk of infection. The needle may still be cross-infected after high temperature disinfection, and the syringe is not safe inside. The best way is to use disposable syringes and needles, but that cost is too high. However, you are using disposable metal syringes and needles for the military master." Xiao Xiu'er said.

"There will be disposable plastic syringes in the future." Chu Yun had no corresponding solution for this.

The cost of plastic production at this time was still very high. Historically, plastic syringes only appeared and became popular in the 20th century, a hundred years later than metal syringes and needles.

"Mr. Jun. Master, you asked 10,000 vaccines sold to Europe are being produced. We expect the export of vaccines can reach 20,000. At the same time, we prepared 1,000 syringes and needles. Some of the vaccines sold to civilians are injected with high-temperature sterilization needles, and disposable syringes and needles sold to princes and nobles, but the charge for disposable vaccines may be much more expensive than ordinary vaccines." Xiao Xiu'er said.

This is the first time that Jiuzhou Army has exported high-profit drugs to overseas! Jiuzhou Army is trying to establish its supreme authority in the field of medicine through smallpox vaccines and monopolize this vast market with high-profit margins!

"Even if the price of disposable syringes and needles is ten times that of ordinary vaccine injections, European princes and nobles will flock to them. Many princes and princesses in their country died of smallpox at a young age." Chu Yun said.
Chapter completed!