Brucellosis is a notifiable infectious disease that is included in the Category B list. In China, there are three main types of brucellosis transmission, bovine type, sheep type, and pig type. Brucella can cause illness when animal products containing Brucella come into contact with human mucous membranes. The disease is highly contagious and can cause symptoms including fever, joint pain, nerve damage, reproductive system damage, and more. The most troubling thing is that there are six different classifications of human infection with brucellosis clinically – subclinical, acute, subacute, chronic, localized, and recurrent infection.

Chronic infections can easily be misdiagnosed as neurosis, and the legacy of acute infections includes, but is not limited to, back pain, arthralgia, sciatica, etc. In case reports of brucellosis ovarians, fixed and intractable arthralgia was the most common.

If the mysterious disease that the villagers of Guojia Village suffer from is sheep brucellosis, it can explain Guo Ying's back pain.

Sun Lien shook his head and said, "If goat milk is not boiled and specially processed, it will have a very strong fishy smell. Most people can't accept this kind of smell. He explained seriously, "Usually, if you just drink brick tea in the village, then the age group will be very wide." However, if the milk tea you usually drink will be mixed with raw goat's milk, then the habitual people who can drink it should mainly be concentrated in the middle-aged and elderly groups whose taste is not so keen. ”

Sun Lien's reasoning angle was a little too tricky, and Director Huang Wenhui didn't keep up with his rhythm for a while, "Do you think...... Is goat's milk okay?"

"If there is a problem with goat's milk, then the number of infected people should be much higher than now. Sun Lien said seriously, "And there will be more people who die or suffer from serious sequelae because of this." Severe pain in the fixed position of the joint is not a symptom that can be easily overlooked. When he said this, the initial hesitation suddenly disappeared, and was replaced by confusion, "I think it should be fluorosis, but ...... The fluoride content in the water is obviously not high enough. ”

The amount of fluoride in the water is certainly not enough to cause fluorosis. Otherwise, the symptoms of fluorosis will appear in the young people – although they are not used to drinking milk tea mixed with goat's milk, they always have to drink the village water.

"That'...... Is there a problem with brick tea?" Director Huang continued along Sun Lien's train of thought, "I've heard that some ethnic minorities in border areas can't do without tea for a day. The brick tea side tea itself is made of compressed fermentation of old leaf tea stems, and the fluorine content is two or three hundred times higher than that of ordinary commercial tea...... Drinking a large amount of brick tea for a long time may indeed lead to fluorosis...... "She said this, and she also felt a little wrong, "But the amount of brick tea drunk by the villagers in Guojia Village is obviously not to that point, right?"

It's really not enough. Sun Lien nodded lightly, "They are not border ethnic minorities with scarce food sources, they must supplement relevant nutrients by drinking tea!" Even if the fluoride content of brick tea is two or three hundred times higher than that of commercial tea, it requires those ethnic minority residents to drink it every day, drink every day, and even simply replace water with tea to cause fluorosis. Compared with them, the villagers of Guojia Village usually drink a total amount of brick tea and side tea.

What other ways can cause fluorosis? Sun Lien frowned, took out his mobile phone, and began to check the information.

There are so many factors that can make people sick that no doctor can keep them all in their heads. When encountering problems in a field that they are not familiar with or do not master, the safest way for doctors is to consult other colleagues or seniors who have mastered this field.

For example, Sun Lien's move of calling Brother Pheasant in the fourth courtyard.

But it is obvious that there is no pheasant brother waiting to respond to Sun Lien's call now, and even Sun Lien himself can't say whether it is another rotten boy from the hall who is killing the other people on the other side, or a passerby wearing a strange cosplay costume.

Fortunately, the mobile phone network signal in Guojia Village is good, and Sun Lien found the relevant literature very easily.

"Drinking water fluorosis, drinking tea fluorosis...... And the coal-fired type?" Director Huang, who was looking at his mobile phone next to Sun Lien, spoke up first, "What kind do you think they will be?"

"The total amount of water alone is not enough, and the amount of tea may not be enough......," Sun Lien rubbed his chin thoughtfully, "Although they use braziers, the fluoride content of peat should not be as high as that of coal in the southwest region, right?"

"Based solely on the fluoride content of coal, fluorosis in the southwest makes no sense. THE FLUORIDE CONTENT OF THEIR COAL IS ONLY 99 MG/KG, WHICH IS ACTUALLY MUCH LOWER THAN IN OTHER REGIONS. Director Huang looked at Sun Lien and laughed, "You haven't used a coal stove before, have you?"

Sun Lien shook his head honestly, he had indeed never used honeycomb coal or a stove that burned loose coal. "I haven't used it, is there anything special about it?"

"No matter where you are, heating your home or burning coal for cooking is a cost consideration. Although the whole block of coal burns vigorously, it does not last too long, and the price is somewhat expensive. "What's more, the stove is too dirty and inefficient, and it can't effectively use the naturally deteriorated pulverized coal." ”

Sun Lien didn't understand what he heard, but as a good listener, he knew when to ask, "And then?"

"Then people invented the way to shake briquettes. Director Huang Wenhui shook his head and said, "Sprinkle some water in the coal ash, then mix it with loess or clay in proportion, and shake it with a dustpan to re-fuse the coal ash into larger coal blocks." ”

Seeing that Sun Lien still looked confused, Director Huang was a little angry, "Haven't grasped the point yet?"

"Nope. Sun Lien shook his head honestly, "Then the briquettes evolved into honeycomb coal with better combustion efficiency, I can also guess this." But what does this have to do with fluorosis?"

"Loess, clay!" Director Huang stood on tiptoe and knocked on Sun Lien's head, "The fluorine content in the coal is not high, but there is it in the soil!" She turned to the village party secretary with a blank face and asked, "Do you have the habit of shaking briquettes or pressing honeycomb coal by yourself in your village?"

"Yes, yes. The village party secretary was finally able to answer this question, "Yes." ”

"I'm going to call the CDC right now. Huang Wenhui nodded, "Let them come over and take samples for testing." She looked at the stunned Sun Lien and smiled, "Boy, learn a little!"