Outside Li Yixuan's house.

The young security guard with the emergency team was about to ring the doorbell, when Aunt Zhang suddenly opened the door from the inside, and two construction workers in work clothes came out at the same time.

As soon as the workers finished their work and walked outside the gate one after another, when they passed by the emergency team, Gu Yanan heard a young worker complain, "I have a fever again today, and I have a fever on the first day of work every time, which is really evil!" ”

One of the older workers said, "If you don't listen, it's dangerous for us, and I used to do that, so it's much better to wear a mask." ”

Young worker: "I wear a face shield when I weld. ”

"You wore it when you welded, but you took it off when you rested, and it wasn't over at that time, you see there was white smoke everywhere in the basement, and you smoked a lot of it in your stomach, I went to the doctor a few years ago, and the doctor said that the smoke was poisonous."

"You're right, I'll have to pay attention next time."

The workers walked farther and farther, Aunt Zhang greeted the emergency team, but Gu Yanan suddenly caught up with the two workers who had just spoken.

Gu Yanan asked the older worker, "Have you ever had metal smoke fever before?" ”

The man was stunned, and the person in front of him was asking a young girl, and the question was abrupt.

Gu Yanan showed his work card, "I am a staff member of the CDC, please answer the question just now." ”

The worker nodded, "Well, I am a welder, two years ago I have been inexplicably feverish, and then I went to the hospital for examination, and it took several big hospitals to find out, the doctor said that it was metal smoke fever, so that I could do a good job of protection in the future, since then, our company has uniformly equipped the welder with a protective mask, and this disease has never been committed again." ”

Metal smoke fever is an occupational disease, which is a systemic disease caused by inhalation of metal oxides produced in the welding or cutting process of metal materials, including fever, chills, cough, dyspnea, headache, muscle pain and other flu-like symptoms, increased blood white blood cell count, and severe patients will also have chemical pneumonia, anaphylaxis, and even acute respiratory distress syndrome, which is life-threatening.

Gu Yanan has been in contact with such patients before, and if it is not for the multi-person disease or occupational background, it is easy to confuse it with malaria, influenza, bronchitis, pneumonia, etc.

Gu Yanan continued to ask: "Have you welded or cut metal in the villa today?" ”

"Yes, I have welded metal pipes in the basement, the workload is very large, almost every villa has to be done, and there is also work outside, the boss is urgent, we have to work overtime, there is no way."

Gu Yanan understood that this time the construction of the villa area in the western suburbs, some projects need to enter the basement of the villa, and when welding or cutting metal in the basement, the metal smoke will be dispersed in the air, and residents will have symptoms of metal smoke fever when they come into contact with these polluted air.

Gu Yanan immediately called the CDC laboratory, "Section Chief Li, check the blood zinc in the specimen sent over in the evening...... Yes, it is Li Jiahui, Zhang Cuilan, and Li Xiaohua, the zinc content in the blood, do a quantitative ...... Well, it is suspected that it is metal smoke fever...... Okay, wait for your results. ”

After calling the CDC laboratory, I called my brother Gu Jiashu again, "Brother, I suspect that Li Jiahui and Mrs. Zhang's family are suffering from metal smoke fever, and they can be treated with zinc removal first." ”

Gu Jiashu on the other end of the phone felt incredible, "Metal smoke heat? Why is the suspicion this? What clues did you find? ”

"I'm in the western suburbs of the villa area now, where construction is underway, and the basement of the resident's home has been welded with metal, and there will be vaporized metal smoke in the house, and some workers also have symptoms of metal smoke."

Gu Jiashu believed in Xiaomei's judgment, "Okay, I know, I'll change the treatment plan for the patient now." ”

After making two phone calls, Gu Yanan instructed the young worker in front of him, "I heard you just say that you have fever symptoms, I suggest you go to the hospital to check the zinc content in your blood. ”

The young worker was scared, "Is this metal smoke fever serious?" Wouldn't it be dead? I've heard that there were three ambulances in this neighborhood today. ”

"If it is serious, it will kill people, but in general, as long as it is out of the polluted environment, after symptomatic treatment, there will be no danger and no sequelae."

The older worker also comforted him, "Xiao Li, don't worry, I have also had metal smoke fever before, and I will be fine after taking medicine for two days, and many of my workers have also had this at that time. You just came, the protective mask is not worn well, this will be the disease, it's okay, if you are worried, go to the doctor, the doctor must say the same as me. ”

"I want to go to the hospital right now." Young workers insist on going to the hospital, after all, their own lives are the most important thing.

"Okay, go ahead, I'll do the rest for you."

Several workers left Li Yixuan's villa one after another, and Aunt Zhang saw that Gu Yanan finally had time to speak, so she stepped forward and asked, "Director Gu, your disease control has come to check again, what do you want to check this time?" ”

"Air."

Before coming to the western suburbs, Gu Yanan had considered that there might be pathogens or pathogens in the air, so he brought an air sampler, which could be used to collect aerosol zinc and its compounds in the air with a microporous filter.

Several members of the emergency response team acted separately and went to Li Yixuan, Mrs. Zhang, and several households in the community who had just undergone welding construction to conduct air sampling.

1 a.m.

The sampling of the entire western suburbs villa area is completed, and the air samples are sent back to the CDC laboratory.

8 a.m. the next day.

The test results are out.

In the basement of a residential area in the western suburbs where there is welding and cutting metal construction, it was found that the content of zinc and its compounds in the air exceeded the standard.

Li Jiahui, Mrs. Zhang Cuilan, and nanny Li Xiaohua had excessive zinc levels in their blood, and were diagnosed with metal smoke fever.

In the hospital, after changing the treatment plan according to metal smoke fever, Li Jiahui's condition has improved significantly, and the allergic reaction caused by metal smoke has begun to subside.

Mrs. Zhang had been notified of her critical illness because of acute respiratory distress syndrome, and her son, who rushed to the hospital in the first half of the night, knelt on the ground and cried, but after zinc removal treatment according to metal smoke heat, Mrs. Zhang's condition stabilized.

Mrs. Zhang's son's mood was like a roller coaster, and when he learned that his mother was out of danger, he took the doctor's hand and thanked him all the time.

Nanny Li Xiaohua's symptoms were mild, and after symptomatic treatment, the symptoms were quickly relieved.

In order to prevent more people from inhaling toxic metal smoke, the emergency team went to the western suburbs in the morning, first contacted the construction party to explain the hazards caused by the construction, and then carried out health education on metal smoke fever for residents.

During the communication process, there was a conflict between the residents and the construction party, and the security guards and the emergency team were caught in the middle to persuade them, but the scene was out of control for a while, and in the chaos, everyone in the emergency team received several punches and kicks.