Gu Yanan, Lu Li, and Wang Xiaoxiao, accompanied by the village chief of Lijia Village, entered Li Guangfa's house in the east of Lijia Village.

Li Guangfa has a family of four, and three people are sick, including Li Guangfa and his wife, the younger daughter, and the eldest daughter, who is in high school in the town, is fine.

Li Guangfa's home is a typical rural self-built house.

Five large tiled houses, with a large courtyard in front, a self-built flower bed in front of the window, in which a few Yueji trees are planted, and a large chicken coop surrounded by barbed wire under the root of the west wall.

To investigate the cause of the family's poisoning, in addition to collecting the food they usually eat and what they use, it also includes the environment they usually come into contact with, and even the air must also be sampled.

Wang Xiaoxiao entered the kitchen of Li Guangfa's house.

There is a refrigerator in the kitchen, and the refrigerator contains the food that has not been eaten before hospitalization, Wang Xiaoxiao collected a little bit of the food in the refrigerator and put it into the sampling bag, and then found the rice and flour oil that he usually eats in the kitchen cupboard.

There were all kinds of condiments next to the stove, and everything was collected a little.

Lu Li entered Li Guangfa's bedroom and sampled all suspicious items on the floor, bedside, and cabinet surface of the bedroom.

Gu Yanan stood in the courtyard, observing his surroundings.

There is a water well in the middle of the yard, the wellhead is not big, the diameter is only dozens of centimeters, the wellhead has a cement cover seal, there are wires and water pipes in and out, this is a narrow deep well, it is a common way for the villagers of Lijia Village and several nearby villages to take water.

Gu Yanan closed the electric switch, and water gushed out from the water pipe outside the wellhead.

The pumped well water flowed into the bucket next to it, and Gu Yanan pulled down the electric switch to observe the water quality.

The well water is clear and cold, and there is no smell of any peculiar smell.

After taking some of the well water and putting it in the sampling box, Gu Yanan checked the other things in the yard.

In the wire chicken coop at the base of the west wall, several chickens are competing for wheat bran and baby greens in the trough.

"Who's feeding these chickens?" Li Guangfa's family is in the hospital, although the eldest daughter is not sick, but stay in the hospital to take care of the family, now Li Guangfa's family has no one to live in for the time being, who will come to feed the chickens?

The head of Lijia Village, who has been following alongside, replied, "It's all the neighbors next door who help feed them, Li Guangfa's family is very popular in our village, and now his family is in the hospital, and the neighbors will help to take care of it, in fact, it doesn't take much trouble, the small greens are all produced in their own fields, and Li Guangfa has wheat bran in his own home, just in the next room, come every day to mix and mix, feed the chickens, and add some water." ”

Gu Yanan's attention was completely focused on the chicken coop, in addition to the chickens that grabbed food, there were many chickens curled up listlessly in a corner.

Moreover, a few of the chickens that grabbed the food seemed to have very sharp legs and feet, standing trembling by the trough, and suddenly fell to the ground as if they were paralyzed.

A paralyzed chicken?

Gu Yanan suddenly thought of the patient paralyzed in bed in the hospital, and now the chickens are also showing symptoms, could it be that the villagers have been exposed to the same toxic substances as these chickens?

Or maybe it's zoonotic?

Whatever the reason, these paralyzed chickens are important clues.

Gu Yanan immediately sampled the area around the chicken coop, including chicken feces, wheat bran mixed with small green vegetables and chicken food, and also put the sick chickens into the sampling bag.

After collecting samples at Li Guangfa's house, Gu Yanan and his party went to another sick family in Lijia Village.

Same flow modulation process.

It's just that the family doesn't have chickens, but pigs.

The family's pigs are also temporarily fed by the next-door neighbor.

The pigs eat three meals a day, and the feed in the morning has just been eaten, and there are still some pig food residues left in the pig trough.

Gu Yanan took out some of the pig food residue and put it in a sampling bag.

With his previous experience in Li Guangfa's family, Gu Yanan carefully observed the state of the pigs.

The pig did not lie down to rest, but walked up and down in the pigsty, tickling on the stones in the corners.

The big white pig walked up in the pigsty, and his hind legs were not corded, and he seemed to be a little dangling.

Lu Li saw that Gu Yanan had been staring at the pig, and not only asked, "Sister Yanan, is there a problem with this pig?" ”

"I can't see it yet, I want to take a sample of this pig's blood."

Lu Li volunteered, "I'll come and collect blood from pig ears, I've done it before." ”

In the morning, more than a dozen households in Lijia Village had completed on-site sampling, and more than a dozen households in several villages next door had to do on-site sampling.

The CDC group only ate a boxed lunch in the car at noon and continued in the afternoon.

After lunch, the on-site flow shunting car of the disease control went along the road next to the Qiang Rose River outside Lijia Village to the next village.

The shunting car was driving bumpily on the road between the villages, and Gu Yanan looked at the scenery outside the car window, and his eyes lingered on the Rose River.

The air in the countryside is very fresh, and the water of the Rose River next to the road is very clear, some villagers wash clothes by the river, and some villagers wash wheat in the middle of the river.

Wang Xiaoxiao, who had just finished eating, took a sip of mineral water, looked out the car window, and saw the villagers washing wheat in the middle of the river.

"Sister Yanan, it's quite troublesome for the villagers to process flour by themselves, and the wheat has to be washed in the river before being sent to the processing plant, and then it can be sent to the processing plant after drying, so it seems that it is not easy to eat the original flour, Gao Fei and his girlfriend will not be near Lijia Village, Guanyun Township, right?"

"Goofy's girlfriend's hometown is in the city next door, so her flour is definitely not produced here."

The group chatted in the car, and soon arrived in the next village, and in the afternoon, they surveyed the sick households in several neighboring villages.

When I returned to the CDC in the evening, it was already dark.

Lu Li sent the specimens collected all day to the laboratory for poison screening, while Gu Yanan went back to the emergency office to sort out the flow information that Gao Fei and Zhou Lao brought back from Guanyun Township People's Hospital.

——

Lianhai Center for Disease Control and Prevention, Emergency Office.

At 8 p.m., it was dark outside, and the emergency office was brightly lit.

When Gu Yanan was sorting out today's flow information, he found a problem.

Flour is the staple food of the villagers in the ward area for three meals throughout the year, while the flour of the sick and non-sick families is different in flour processing, the flour of the sick family is processed in the same private flour processing factory, and the flour of the non-sick family is the finished flour purchased from the town.

And this same private flour mill is Li Erzhu's private flour mill in Lijia Village.

All kinds of clues show that there is probably a problem with the flour produced by Li Erzhu's private flour mill.

Gu Yanan remembered the scene when he was conducting a flow survey at Li Erzhu's house in Lijia Village this morning.

Although none of Li Erzhu's family showed symptoms of poisoning, Gu Yanan went to Li Erzhu's private flour mill by herself while the rest of the disease control team was doing the investigation at the patient's home.

At that time, Li Erzhu's flour processing machine was not running, and Gu Yanan asked Li Erzhu if the flour they ate was bought from the town or processed by themselves?

Li Erzhu replied that the noodles they eat are all processed by themselves, and the last time they processed flour was two months ago, and there was still a big bag left that was not finished, Gu Yanan took samples from these flours and put them in the sampling box.

The specimens are now being screened for poisons in the CDC laboratory, but the exact type of poison is still uncertain.