The fact that cowpox completely prevented smallpox immediately broke through the gloom that hung over everyone.
For thousands of years, plague has caused too much suffering to mankind, and it can even be said to be the biggest enemy of human existence.
Everyone understands the meaning of being able to win the battle now.
"Your Highness, everyone must be vaccinated against cowpox immediately."
Hou Xun didn't want to wait any longer.
"Not only that, please give an order from His Highness to strictly keep the secret of cowpox."
Li Banghua thought of more.
Now the plague has spread and is causing disasters in large areas. It can be said that whoever can defeat the plague early will be able to take the lead and have absolute initiative in the general trend of the world.
Think about it, if the Xia Kingdom fully rolled out cowpox vaccination and completely eliminated the threat of smallpox, more of the population would be saved.
And population is strength.
On the contrary, Xia's enemies must have been greatly weakened due to the loss of a large number of people.
As one loses and the other rises, the balance of strength will inevitably tilt completely. It can reduce more obstacles when Xia Kingdom unifies the world in the future.
Nowadays, the secret of cowpox is only known to a small number of people. As long as you make good use of it, it is the most powerful weapon.
Zuo Mengeng accepted all the proposals of the two prime ministers.
"Just do it like this."
Vaccination against cowpox first began in the military.
After all, we are now in a state of war, and ensuring the combat effectiveness of the army must be a priority.
Although I don't have the right tools at hand, I can still cope with it using the same method as Lu An.
All the medical staff were gathered together, and Lu An walked up and down in front of them seriously.
"Now read out the confidentiality regulations. No information about the preparation, preservation and application of cowpox is allowed. Even your relatives are not allowed to tell. If there is any leakage, you will be severely punished."
The medical workers all became serious and kept her words in mind.
The subsequent collection of cowpox was also carried out in complete secrecy.
On the pretext of detecting the epidemic, medical workers, under the protection of Xia Army soldiers, went deep into various parts of North Korea to search for domestic animals with cowpox, and then secretly collected them.
The collected cowpox is put into glass bottles and sealed. Then put it into an incubator filled with ice cubes and freeze it for storage.
This is the only preservation method currently available.
In addition, Lu An also led people to analyze the optimal vaccination dose of cowpox.
Although there is no way to do this during the process of vaccinating the military, these data provide assurance for the full implementation of cowpox vaccination in the future.
If you want to vaccinate everyone in Xia Kingdom against cowpox, you must have professional tools.
That is, syringes and needles.
The method like Lu An used to make a cut with a knife and then spread the cowpox inside was too crude.
First, this method will cause the wound to bleed, which is not conducive to the absorption of cowpox;
Second, there is no way to carefully control the dose of cowpox;
Third, this method will cause a huge waste of cowpox.
To overcome these three shortcomings, you must have professional needles and needles.
Zuo Mengeng has ordered all glass factories in Xia to start producing needle tubes with all their strength.
There was no plastic in this era, and the only raw material that could be used to make needle tubes was glass.
In addition, the push tube in the needle tube is also made of glass.
Although limited by the level of technology, there is no way to achieve a tight combination of the needle tube and the push tube, but medical workers still thought of ways to overcome it.
That is to wrap the push tube with extremely thin leather so that it can completely fit the wall of the needle tube.
If the manufacturing of needle tubes is relatively easy, then the needles have become a huge problem.
"Master, you have to come forward in this matter. Nowadays, none of the craftsmen in the factory are skilled enough."
At Yang Gui's home, Jiang Feng, the director of the factory, came to the door and asked the master to take action in person.
Today, Yang Gui is over seventy years old, so he is staying at home to take care of himself.
He was playing with his great-grandson, and when he saw the drawings handed over by Jiang Feng, he started to lecture him angrily.
"I have told you a long time ago not to be so superstitious about machines. After all, craftsmanship is the foundation. Even His Highness said that the level of craftsmanship is always ahead of the machine. But you don't listen and think that we old guys are nagging. How are you now, have you fallen into trouble?"
Jiang Feng was scolded so much that he couldn't stop laughing.
"Now everyone knows that they are wrong. I have to ask Master to help with this matter. His Highness has issued a strict order. If the task cannot be completed, everyone will have to suffer."
Yang Gui handed his great-grandson to the nanny, turned around and walked out.
"Call those old guys over to me."
Seeing that he finally took action, Jiang Feng was extremely happy.
"Don't worry, all uncles and disciples have been notified."
The craftsmanship of needles is extremely difficult for this era.
It needs to be thin enough, vacuum-proof, hard enough, and has certain size requirements, so it must be able to fit in with the needle sleeve.
After these requirements were conveyed to the factory, everyone immediately felt that it was difficult.
They worked tirelessly and tried several times, but the results were completely unsatisfactory.
Forced to have no choice, Jiang Feng thought of his master Yang Gui.
This earliest craftsman in the Xia Kingdom is best at handcrafting.
The barrel of Xia's first flash cap gun was hammered out by Yang Gui himself.
According to Xia Guo's craftsman skill rating, Yang Gui is the only master craftsman in the field of metal manufacturing.
In the factory, Yang Gui and the old masters who had retired long ago got together and took over the task of making needles.
"Old Xingtou, you go first and grind a small iron rod out. You already know the specific dimensions. Can you do it?"
Lao Xingtou is gearing up and full of confidence.
"Brother Yang, don't worry. If I can't make this thing, you'll kill me."
After saying that, Old Xingtou told his apprentice: "Bring me my reading glasses and put them on the table."
He then said to Jiang Feng: "You juniors are not very skilled, can you make an embroidery needle without any problem?"
Jiang Feng nodded like garlic.
"No problem, no problem. Uncle Xing, just wait a moment and we'll prepare it for you right away."
The embroidery needle is one of the factory products and there is no technical difficulty at all. It was quickly made and delivered to Lao Xingtou.
The embroidery needle is fine enough, but still too thick for making a needle.
In full view of everyone, Lao Xingtou clamped the embroidery needle with a vise, then picked up the file and began to grind it patiently and carefully.
He wants to grind the embroidery needle finer and keep the surface smooth and flat.
It seems simple, but now in the world, he is the only one who has this skill.
On the other side, Yang Gui was not idle either.
He asked people to open the furnace, boil the molten iron, and then bring it to the pool to cool down.
He controlled the whole process very well, and there was only a thin layer of molten iron flowing into the pool.
Not only that, Yang Gui also personally used an iron roller to roll back and forth in the slowly cooling molten iron, making the molten iron thinner and thinner...
Finally, the molten iron cooled and formed, and when picked up, it was as thin as paper.
