Gao Fei agreed, "Xiaoxiao makes sense, if it is downstream sewage discharge, and deliberately avoid water quality monitoring time, it may go undetected for a long time." ”

Zhou Lao frowned and asked: "Hepatitis A virus has not been found in the previous routine monitoring of aquatic products in the coastal waters of Lianhai City, and the outbreak of hepatitis A caused by the clams shows that the clams in the coastal waters are not carrying the hepatitis A virus themselves, but have recently been polluted by seawater when feeding by filtering seawater, and the seawater is likely to be polluted by freshwater, what pollutes the freshwater flowing into the sea?" Hepatitis A is usually transmitted by human or animal feces, so who dumps animal feces directly into the sea, or into the Rose River? ”

Wang smiled: "Such a large-scale hairy clam is contaminated with hepatitis A, how much feces is needed." ”

Zhou Lao shook his head, "It doesn't take much, as long as a little sewage containing hepatitis A virus enters the sea, shellfish such as clams and oysters will enrich the virus and multiply the virus in the body." ”

Speaking of seafood, Lu Li's stomach growled with hunger.

After dinner time, the emergency response team was still working overtime.

Lu Li felt that he could bear to be hungry, but the Rose River was so long, and there were more villages and communities around it, so it was not easy to find the person and place where to discharge the pollution.

Lu Li couldn't help but sigh, "When will this source of pollution be found, maybe the polluter only committed a single crime, inadvertently discharged sewage containing hepatitis A virus once, and then did not commit it again, then we will never find the real source of polluting seawater." ”

Wang Xiaoxiao looked at Gu Yanan, who had been silent, and asked, "Sister Yanan, we found the hairy clams containing the hepatitis A virus, as well as the sea area where the problem clams were fished, this can be regarded as finding the source of infection, right?" As long as the detection of clams entering the market is strengthened, this hepatitis A epidemic can be controlled, and our CDC's task is completed, right? ”

Gu Yanan knew that what Wang Xiaoxiao said was also reasonable, but she still wanted to find the source of the polluted seawater, but she couldn't let everyone follow her to work overtime.

Gu Yanan instructed the rest of the emergency team, "You drive back first, Lu Li will summarize the results of the investigation in the past few days and hand them over to Director Yang, and the others will go back to rest." ”

Lu Li was surprised, "Sister Yanan, are you asking me to write a summary report of this epidemic?" ”

"Well, what? Not confident? ”

"Yes!" Lu Li replied in a loud voice, "It's just that Sister Yanan used to write a summary report on the epidemic, and suddenly asked me to write it, which is a bit ...... Flattered. ”

"Don't be flattered, it's just a stage summary, it's not good to write, be careful that Director Yang hits you." Gu Yanan joked lightly.

"Sister Yanan, the car was driven away by us, what should you do?" Wang Xiaoxiao was a little worried.

"I want to stay here to blow the sea breeze and see the scenery."

The members of the emergency team worked overtime for three days in a row, and they were all very tired, and now that the on-site investigation has come to an end, everyone wants to go back and take a rest, although they know that Gu Yanan has another purpose for staying here, but since it was their leader who decided to do so, they didn't have much to say.

On-site flow dispatch vehicle landing, Wang Xiaoxiao, Zhou Jie,

Gao Fei and the four left, leaving only Gu Yanan on the embankment.

At night in late winter and early spring, the weather was still very cold, Gu Yanan wrapped his collar tightly and looked up at the sky.

A first quarter moon hangs in the sky, surrounded by stars, which is a good weather for viewing the moon and stars.

Gu Yanan's eyes looked in the direction of the Rose River towards the urban area of Lianhai City.

On both sides of the Rose River, thousands of lights flickered.

His eyes were following the direction of the Rose River, looking at the vast sea.

The vast ocean is the place where hundreds of millions of living beings live, and it is also the place where human beings originated, but it cannot stop human pollution.

Who is the person who emitted the source of pollution?

Gu Yanan under the night sky pondered, waiting......

A ringing of a cell phone breaks the silence under the stars.

Caller ID Nan Han Fei.

Picking up the phone, Nan Hanfei's magnetic voice came, "Where are you now?" ”

"The mouth of the Rose River."

"It's so late, what are you doing there?"

"Look at the scenery."

Nan Hanfei on the other end of the phone was silent for two seconds, "Send me your location." ”

"What? Do you want to come too? ”

"Yes, I've been here in Lianhai City for two years, and I haven't seen many places, especially the scenery near the Haizhou Bay Fishing Ground, the entrance of the Rose River should be near the Haizhou Bay Fishing Ground, I don't know what to see at this night, but since you are watching, it must be a very beautiful scenery, so I want to go and see the scenery you are looking at."

Half an hour later, Nan Hanfei appeared in front of Gu Yanan in his car.

Nan Hanfei approached Gu Yanan, draped a black coat he brought over Gu Yanan, and asked, "Is the person you were waiting for here?" ”

Gu Yanan was stunned for a moment, and quickly smiled and asked, "Isn't it you who I'm waiting for?" Aren't you already here? ”

"I'm coming to you myself, and the person you're waiting for is someone else, how about it? Do you have a clue about the person who emitted the source of the pollution you are waiting for? ”

Gu Yanan was completely stunned, she didn't expect Nan Hanfei to know her thoughts.

"How do you know I'm waiting for someone who emits the source of the pollution?"

"This is very simple, a reasoning knows, the entrance of the Rose River is not far from the Haizhou Bay Fishing Ground, recently you are investigating the source of hepatitis A pollution, and the Internet is circulating that many people in Lianhai City are infected by the hepatitis A virus because they eat clams, our largest hairy clam fishing area in Lianhai City is the Haizhu Bay Fishing Ground, your purpose here is already obvious, I called you and you said to see the scenery at the entrance of the Rose River, so late you are so busy, you will not come to see the scenery without a purpose, so I speculate, You are the one who is here waiting for the source of the pollution. ”

Gu Yanan gave a thumbs up to Nan Hanfei and exclaimed: "Awesome, worthy of being a policeman, you can deduce the true purpose of my origin with just a little clue, but how do you know that I am going to investigate the person who emits pollution?" It stands to reason that most people think that even if the whole process of investigation is completed after the investigation of the production area of the problematic clams, they will not think about further finding out the cause of the pollution of the clams. How did you come up with the idea to investigate the source of the discharge? ”

"It's simpler, with a little bit of expertise, you can know that the hepatitis A virus is transmitted through the fecal-oral route, since it is said that the clams are contaminated, there must be a source of contamination of the clams, and the most likely is through human sewage, for example, the domestic sewage infected with human and animal feces is discharged into the sea, and the purpose of your waiting here is obvious."

Gu Yanan looked at Nan Hanfei in front of him with an exploratory look, "Did you ever work as a doctor or do infectious diseases like me before you became a police officer, how do you know so much about our work process?" ”

Nan Hanfei also looked at Gu Yanan with an exploratory look, "Are you interested in me when you ask this?" Don't rush, I have time to tell you slowly. ”

"There's time now." Gu Yanan raised his hand and glanced at the watch time on his wrist, "It's only 9 o'clock in the evening, I plan to wait here and watch the scenery here all night, if you want, you can tell you everything from birth to the present." ”