To be honest, the speed of detecting the true identity of pathogens is indeed not fast.
There is not even a fast enough speed at which scientific researchers can take samples and investigate the pathogens carried in food.
But this is understandable. After all, scientific research is conducted in a targeted manner, and the hospital must give priority to treating patients before conducting a targeted investigation into the cause of the patient's poisoning.
Moreover, the information provided by Detective Mizukura was not just the test results of patients poisoned in one or two hospitals, but the answer obtained after the other party confirmed that the food poisoning of patients in all hospitals was caused by the same pathogen.
Although time will be slower, it is very useful.
Not only did they determine that it was the same pathogen, they also determined that the pathogens carried by the patients had the same genetic shape.
That is to say, the source of infection is the same, and the source of food poisoning is also the same for everyone.
The true identity of the pathogen this time is Vibrio parahaemolyticus.
The incubation period of this pathogen is 8 to 24 hours, which coincides with the evening opening hours of Happy Restaurant and the time between the patient ingesting the pathogen and the onset of illness.
In other words, this confirms that Happy Restaurant is the culprit that caused food poisoning for hundreds of people.
After all, most patients have been revived by the hospital, and you can find out this information just by asking.
"The question now is which foods contain this pathogen."
Nanatsuki Koshimizu watched Karasawa hang up the phone, stroking his chin as he analyzed the information he had heard from the hands-free call:
"The scientific research team has investigated so many ingredients and hasn't found any that carry the pathogen. Now that they know it's Vibrio parahaemolyticus, they should conduct a targeted investigation."
"Vibrio parahaemolyticus is a bacterium that mainly grows in the sea, that is, in fish and shellfish." After all, Tang Ze has a C-level biology degree and knows some simple biological knowledge.
"But during the Mizukura investigation, you noticed a wide variety of dishes, right?" Koshimizu Nanatsuki thought for a moment and said, "It seems many of the patients didn't eat any fish or shellfish yesterday."
"I do have some ideas." Tang Ze narrowed his eyes and said, "If everything is really as I think, then maybe we can solve the food poisoning case."
"Senior, do you have any idea yet?" Nanatsuki Koshimizu asked in surprise.
"A little bit."
Tang Ze nodded and said, "Let's go and verify the cause of the food poisoning first. Perhaps after knowing the truth, we can also solve the murder case."
"Okay, then we'll wait and see." Nanatsuki Koshimizu quickly reviewed the information she had obtained in her mind, but she didn't have any breakthrough ideas, so she nodded and looked forward to Tang Ze's reasoning.
Taking Nanatsuki Koshimizu all the way to Happy Time Restaurant, Karasawa once again entered the restaurant's kitchen.
The restaurant has suspended business at this moment, and only the manager is here, making it look very deserted.
"Two criminals, what brings you here?"
The young store manager saw the two criminals and asked, "What are the results of the investigation? Is it related to our restaurant?"
"We currently suspect that the special sauce in your store caused all this." Tang Ze said as he walked towards the kitchen and found the vacuum-packed special sauce.
"The ingredients are milk, scallops, onions, meat extract, vinegar and celery." Nanatsuki Koshimizu read out the ingredients.
"How is that possible!"
The store manager beside him said excitedly, “We use expensive raw edible scallops, but they are delicious!
We also pour the sauce into glass containers so that customers can use it as they like.
All sauces are bottled before opening, and we have strict regulations that sauces delivered on the same day must be used up on the same day, so freshness is absolutely guaranteed!
"What if we can't finish it on the same day?" Tang Ze picked up a glass container and asked in an ambiguous tone.
Facing Tang Ze's seemingly meaningful question, the young store manager quickly explained, "When business is over, throw everything away and clean all the containers.
As for the unopened ones, they're just a perk for employees to take in turns. After all, the vacuum-packed ones have a shelf life of seven days, so at best, they won't taste as fresh as they did that day.
"Sure enough, this is why the scientific research team couldn't find the pathogen. The sample they took was from an empty, clean container."
Tang Ze understood what he said and looked at the store manager and said, "You said that the employees will take turns to take the sauce away, right?
Then please contact those store clerks and ask them to provide yesterday's special sauce.
Also, if any of them have eaten the sauce, get them to the hospital immediately!"
"This..." After hearing Tang Ze's words, the store manager realized that there might really be something wrong with their special sauce, and he couldn't help but be a little distracted.
"Hurry up, do you want your colleagues to get food poisoning?" Under Tang Ze's urging, the store manager hurriedly picked up the phone and contacted someone.
After the store manager contacted the several store employees who took away the special sauce yesterday, and asked the one among them who was closest to the store to bring back the sauce, their faces all looked gloomy.
Obviously, this is also a huge blow to him as the owner. After all, the restaurant is so prosperous and his salary as the owner is also very high.
"By the way, you also need to check today's special sauce." Tang Ze reminded and signaled Nanatsuki Koshimizu to take a bag of today's sauce and tell the people from the scientific research institute about it later.
"But, Senior, are you so sure that the special sauce carries pathogens?" Nanatsuki Koshimizu asked beside him, "Aren't you afraid that your judgment might be a mistake?"
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