"Oily fish?" Everyone, including Qianyu, had a rather confused look on their faces—the name was obviously quite unfamiliar to them. "What's that?"

"A very interesting fish, often used as a cod ......" the doctor's expression was rather subtle. These symptoms can occur if the fish is ingested by mistake, because the fish contains ingredients that cannot be digested by humans...... For example, steatorrhea and vomiting symptoms before. ”

"Does that include a rash?" Qian Yu asked. "The rash on his body doesn't seem to have gone away?"

"I guess it's a skin disease," the doctor shook his head. "The symptoms of accidentally eating oily fish should not include this, but I think it is very likely that it is not a disease of the same cause as vomiting and diarrhea - such as dermatitis or allergies, after all, it is now almost certain that some diseases are caused by eating oily fish, and other diseases are unlikely to be caused by another rare disease."

"Can you confirm that this is a disease caused by eating oily fish by mistake?" Gray Plains suddenly spoke. "If eating oily fish by mistake only meets some of the symptoms, why can't it be that the diagnosis is biased, but in fact it is another disease?"

"So I'm going to make sure," the doctor shrugged. "The easiest way...... If there really is an oily fish mixed in with the cod, it is certainly not only this unlucky person who is late to the oilfish, and other people may have similar symptoms - as long as someone has similar symptoms, we can basically confirm the diagnosis. ”

"......" Qian Yu suddenly remembered something, and then called the storage memory of the auxiliary unit.

The steamed cod that Honda eats is a very small cod steak, and any fish can be cut into many chunks. And the number of pieces he eats is not much, can such a small amount really have such serious physical consequences? If a few pieces can have such serious consequences, why don't anyone else have this symptom? After all, it's likely that someone has eaten more oily fish pieces disguised as cod chunks than Honda, but now no one is suffering from a serious illness of Honda's magnitude. Even if you eat less than Honda, there will be some patients who have mild symptoms but have similar symptoms to Honda.

……

"You don't have that over there?" The doctor frowned and looked at Chiba and Gray Plains. "Haven't anyone had any symptoms of vomiting?"

"No," Qian Yu shook her head. "I have one or two people here who are not very well, but they are not vomiting."

"Of the people I investigated, three had mild rashes, and one had a slight gastrointestinal upset," said Gray Yuan Ai, who also said that he found nothing on his side. "It looks like Honda is the only one with those symptoms."

"That's weird," Honda shook his head. "It's unreasonable, unless ......"

"Statistically speaking, this has ruled out the possibility that this symptom will occur as long as you eat oily fish," Chiba nodded. "Maybe Honda is in some special situation, right?"

"I'll go back and see if there's any clue in Honda's room first......" The doctor looked gloomy. I have an idea to give it a try. ”

……

When the doctor returned to the infirmary, he was greeted by an assistant who had already put on a gas mask.

"Are you sure?" The doctor asked with a blushing face.

"There are no tests yet, so I can't confirm it, but the symptoms are ......," the assistant nodded, and handed the sealed package of the gas mask in his hand to the doctor. Let's take a look, a very obvious symptom of neck stiffness - it's better to wear a gas mask first. ”

"Got it," the doctor nodded, then unwrapped the gas mask and put it on his head. "Take me inside and have a look."

The two walked into the isolation room next to the infirmary together, and looked at Honda lying on the bed together—Honda's neck was resting on the pillow, but his neck was showing an eerie, completely gravity-defying abnormal backward posture.

Dr. "......" walked up to Honda and tried to break Honda's head with his hand, and found that Honda's head could rotate horizontally relatively freely, but when he tilted his head sideways, he would encounter slight resistance, and the head lowering action simply encountered strong resistance - typical neck stiffness symptoms, because the stiffness of the neck extensor muscles is particularly obvious, so the patient's head lowering action will be significantly limited.

"Acute onset, high fever, vomiting, impaired consciousness, stiff neck......" the doctor muttered. You prepare a puncture needle - forget it, there is probably no such here, get me a 20G needle. ”

After about a minute, Honda's shirt had been pulled to about his chest, his body position had been adjusted to the lateral position, and his body had been held in this position by several restraint straps attached to the wall hooks - the patient was now basically in a coma with no signs of body movement, so the doctors only restrained Honda slightly and skipped the step of giving lidocaine to anesthetize.

"Whew—" The doctor looked at the syringe in his hand and then at the small piece of skin above Honda's waist that had been coated with alcohol.

If the other symptoms were fine, the neck stiffness that his assistant had just noticed was a real nuisance—a typical meningeal irritation, common in brain infections such as meningitis or noninfectious compression such as brain tumors.

Combined with symptoms such as high fever, vomiting, and impaired consciousness......

If the lumbar puncture that I am about to do on Honda can extract turbid cerebrospinal fluid, then this is a typical cerebral flow (meningococcal meningitis), and it is a malignant case that has developed to the stage of sepsis + meningitis. (That's why they wear gas masks, because the brain is contagious).

With this in mind, the doctor took a deep breath, then pressed the syringe against Honda's skin, adjusted the angle, and stabbed it in. Soon, the doctor felt that the needle of the syringe was encountering resistance, which disappeared after another distance of penetration, and the doctor immediately stopped continuing to puncture deeply—the loss of resistance indicates that the needle has broken through the ligament and entered the subarachnoid space where cerebrospinal fluid can be collected.

The clear liquid quickly flowed down the needle.

"......" Doctor's brows furrowed slightly, because the clear liquid is actually the result of quite trouble, although this is not a symptom of cerebral flow, but it is indeed possible that cerebrospinal fluid will not be cloudy in the early stage of cerebral flow. As a rule of thumb, if you fail to extract cloudy CSF the first time, you should try again in a day or so to determine the results.

At this moment, the public telephone of the infirmary rang - although the infirmary had a telephone, not many people should know about the existence and phone number of this number. With some curiosity, the assistant answered the phone with the doctor's permission. But after listening to a few words from the person on the other side of the phone, the assistant's face changed.

On the other side of the phone, Chiba and Gray Hara, who also had bad faces, leaned against the outside of Honda's cabin with the gate closed.

Just under the bed in the cabin, a test tube with a red Siamese cat logo on it opened wide.