Standing on her legs on the lifter, she turned sideways to aim the arrow on her bowstring at a target 59 feet (18 meters) long from her, and after pulling a second heavy arrow from the leather quiver on her back, Dorothy looked at her and whispered, "Once, a hired woman in the village milked some milk from a cow. However, a week later, some signs related to sin appeared on her hands and body. ”

"Smack...!" The second heavy arrow shot by Isabel accidentally hit the outside of the bull's-eye. Annie, the personal maid standing outside the right side of the arrow path, glanced at the arrow target several times in a row, and looked at Isabel with an exaggerated expression, "Miss, you didn't hit the bull's-eye this time??" ”

Annie's words also caught Dorothy's attention, and instead of telling about the "strange things" that happened in the village, Dorothy looked at Isabel curiously, "Miss, you... Okay? ”

"Uh, I'm fine." Isabel just smiled, knowing in her heart the real reason why the arrow had missed the bull's-eye.

Because the strange thing that Dorothy told was actually an infectious disease that happened to cows - cowpox. This is an acute infectious disease caused by the smallpox virus in cattle, and the symptoms are usually local ulcers in the ** part of the cow. The virus can be transmitted to humans through contact, most commonly among milkers or slaughterhouse workers. The incubation period is 9~12 days, and pimples appear on the patient's skin, which slowly develop into blisters, pustules, and some other symptoms.

For people with weakened immune systems, infection with the vaccinia virus can be fatal. However, the vast majority of universal humans, infected with the virus, experience only mild discomfort and develop resistance to the vaccinia virus. Since the vaccinia virus has the same antigenic properties as the smallpox virus, which causes smallpox disease in humans, humans also gain immunity against the smallpox virus after vaccinia vaccination.

Smallpox is perhaps one of the most dangerous human diseases on Earth, with a variant of the smallpox virus causing a staggering 30% of the fatality rate. At the end of the 18th century, the smallpox virus killed about 400,000 Europeans every year. Even in the 20th century, about 300 million people worldwide died from the smallpox virus.

When the World Health Organization officially declared the smallpox virus eradicated as a disease in 1979, the world's last live smallpox virus samples were kept in two places: the Korsovo State Research Center for Virology and Biotechnology in the Novosibirsk region of the Russian Federation, and the CDC (Centers for Disease Control and Prevention) in Atlanta, Georgia, United States. Live strains are refrigerated at low temperatures in small test tubes, and most strains are collected when the disease is eradicated.

This is what Isabel learned about the smallpox virus during her Naval Medical course. As a naval cadet, she will also be required by the school to be vaccinated with various vaccines to prevent being infected with various virulent infectious diseases before she conducts sea training in the summer. As such, she is no stranger to the terrifying smallpox virus.

Isabel walked out of the arrow path with the bow in her left hand, handed the longbow to Anne and smiled at Dorothy, "Dorothy, tell me about the strange things you encountered. ”

Dorothy told her about the demons she had seen and heard about coming to earth to punish the "deeds" of the female wives who were milking. For example, the body temperature of female employees will suddenly rise and become a little hot, and they may have symptoms such as irritability, headache, chills, vomiting, and loose stools in daily life. Of course, the female hired woman was still very conscious, but occasionally there were some convulsions.

As the two walked slowly along the arrow path, Isabel listened to the maid's story and pondered how she could tell the maid about the smallpox virus-resistant cowpox, who had only a basic education. If you say the word "cowpox" directly, I am afraid that everyone will not understand it at present, but will say that you are the representative of sin in the secular world.

"Dorothy, what happened to the milkmaid?" When Isabel spoke, she was calm. However, she was very excited because she had found a way to prevent various infectious diseases.

Dorothy thought back to a few years ago, and suddenly chuckled softly, "Miss, what happened to the hired woman later, you must have thought that God saved her soul and body. ”

"Well, so to speak, the female hired woman is well after repentance and prayer to God? And no longer infected with the plague brought about by the sin that he used to suffer? ”

"Yes, miss. No one dared to approach her or take care of her, and even the village priest was afraid of being infected by the plague brought by sin. Dorothy paused and then whispered, "After the plague, the female hired woman repented and prayed every day. After about 6 weeks, all the blisters on her body that were bleeding yellow water had become smaller and scar-like. ”

Ever since Dorothy, her son and father were rescued by Isabel a few years ago, she has been thinking about how she can repay each other for their "chivalry". However, before entering the manor, she was only a farmer's wife, and after entering the manor and becoming a maid, she still did not think of a way. Now, she has inadvertently told Isabel a wonderful piece of news. If the smallpox-resistant cowpox could be used as her reward for Isabel, it would be perfectly fine.

At this moment, a male servant walked quickly to the small school yard and walked straight to Isabel and the two maids. He bowed to her and said, "Miss, dinner is ready, and Lord and Madame are waiting for you." ”

Isabel nodded, "Go tell my father and mother, I'll be right away." ”

When the manservant left, she thought about it and said to the maid beside her, "Dorothy, you and Anne go to the butler and tell him to send someone to find someone in the territory or other villages at the same time tomorrow... A cow possessed by sin. ”

"A cow possessed by sin? Miss, I will be punished by my lord and lady for doing so. Dorothy's eyes were filled with panic and fear of the authority of the nobility.

Isabelle's intention was to obtain some liquid from cowpox, which was then poured into the wounds of people who were not infected with the smallpox virus, so that those who were not infected with the smallpox virus would gain immunity. Of course, there is another way to extract the vaccinia liquid directly from the milkmaid who has cowpox.

"Dorothy, you will not be punished." Isabel smiled lightly and changed her previous request, "Well, so be it. You go and tell the butler to find some milkmaids who are possessed by sin. If the butler doesn't understand, ask him to come to the restaurant to find me. ”

Please remember that the first domain name of this book is .. Three-Zhangmen mobile version reading website:m.