Azabu-Juban Festival Crab Ramen Food Poisoning: Norovirus and Plesiomonas Also Found in Patients’ Stool — 5ch: “A Full-On Department Store of Germs”

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The story

A food poisoning outbreak at the “Azabu-Juban Summer Festival” in Tokyo’s Minato Ward: 78 customers who ate a food stall’s chilled crab ramen in August reported diarrhea and vomiting, with 3 hospitalized. Tokyo Metropolitan Government and Minato Ward announced that Salmonella had been detected in patients’ stool, but it has now emerged that norovirus, diarrheagenic E. coli, and even Plesiomonas — rare in food poisoning cases — were also detected. The stall was run by chef Komeo, known for appearing in the fighting event “BreakingDown,” and on 5ch, discussion centered on the sheer number of pathogens detected, doubts over hygiene management, and speculation about which ingredient was to blame.

A new, shocking fact has come to light regarding the case at the “Azabu-Juban Summer Festival,” held in Tokyo’s Minato Ward in August, where 78 people who ate a food stall’s “chilled crab ramen” reported symptoms such as diarrhea and vomiting, with 3 hospitalized.

Tokyo Metropolitan Government and Minato Ward announced that Salmonella had been detected in the stool of 31 patients and 2 staff members, downplaying it as food poisoning “caused by Salmonella” — but in reality, far nastier pathogens had been detected.

I was stunned reading the press release on Minato Ward’s official website. That’s because, in addition to Salmonella, norovirus, diarrheagenic E. coli, and Plesiomonas were all detected in patients’ stool.

Source: asagei.com / Original article here

What people said

2AnonymousSep 6, 2026 15:36
At this point it sounds like there's a separate culprit doing this on purpose.
42AnonymousSep 6, 2026 15:43
Honestly, that's a talent in its own way.
51AnonymousSep 6, 2026 15:44
♪Just one sewer crab and you're down for the count~
Crab Shock!
223AnonymousSep 6, 2026 16:03
Re: #2
That's just what Tokyo tap water is like, isn't it
11AnonymousSep 6, 2026 15:38
Why would gutter-river bacteria be in the kitchen?
98AnonymousSep 6, 2026 15:50
Re: #11
Apparently the hygiene management was just plain terrible

Crab ramen food poisoning: Chef Komeo denies "reusing ingredients," but his own SNS posts reveal a string of sloppy hygiene practices
https://news.yahoo.co.jp/articles/ab30c9003783cd28078b1786a9dd5375e9cd3edc

>Based on past TikTok videos, critics pointed to sloppy hygiene practices such as 《tucking chili peppers used as ingredients into his headband》《eating ramen directly over the sauce vat》《leaving ingredients outdoors at room temperature》《cutting sashimi with hands that had just touched his phone》
228AnonymousSep 6, 2026 16:03
Re: #11
Because Tokyo itself is contaminated
239AnonymousSep 6, 2026 16:04
Re: #11
Because they were using water from a sewer ditch
23AnonymousSep 6, 2026 15:40

Quite the variety of pathogens
24AnonymousSep 6, 2026 15:40
Plesiomonas doesn't even come up in food safety training courses lol
Because it's something that's not supposed to show up in the first place
69AnonymousSep 6, 2026 15:46
Re: #24
So Plesiomonas isn't something that shows up in a normal cooking process?
By "training course" do you mean like the one for a chef's license?
134AnonymousSep 6, 2026 15:54
Re: #24
Actually I have a chef's license too and diligently attend the local training sessions, but I don't recall Plesiomonas ever coming up in a food poisoning case
46AnonymousSep 6, 2026 15:43
It's just country bumpkins who don't know how delicious Tokyo gutter water is, criticizing it
71AnonymousSep 6, 2026 15:47
Re: #46
Cracking up at this lol
67AnonymousSep 6, 2026 15:46
(;゚Д゚) Eating something undercooked from a stall run by people who look like mobbed-up thugs is basically suicide lol
Sauce-flavored senbei crackers and cotton candy are plenty
94AnonymousSep 6, 2026 15:50
Re: #67
Getting fed gutter ramen for 2,000 yen — what kind of punishment game is that.
99AnonymousSep 6, 2026 15:50
Re: #67
No, actually the crab was deep-fried
They were probably wary of food poisoning given it was summer
Also, according to this article

・No Plesiomonas was detected in the crab used in the crab ramen

so there's that
73AnonymousSep 6, 2026 15:47
Is this article stupid? The real question is whether that Plesiomonas showed up consistently across everyone, right lol. If it turns out that one customer just happened to go swimming in a lake, that's a "oh, I see" kind of story, you idiot. If it came from the ramen, it needs to show up consistently in the other patients too.
90AnonymousSep 6, 2026 15:49
Re: #73
It showed up in both an employee and victims, so saying it's just a coincidence and unrelated doesn't really hold up
74AnonymousSep 6, 2026 15:47
Bet they were using cheap Chinese ingredients again (uses "Shina," a dated, derogatory term for China)
97AnonymousSep 6, 2026 15:50
Re: #74
Chinese-made crab itself isn't the problem, that's rude to say.
103AnonymousSep 6, 2026 15:51
Re: #74 It blew up back in May

Chef Komeo's new ramen shop erupts in controversy over "food mislabeling" — the uniquely "ramen" reason behind the backlash

https://news.yahoo.co.jp/expert/articles/102b5bafddcc8867601fcba5249d7563105c59eb

Chef Komeo, also known for appearing in the fighting event 'BreakingDown,' opened his crab ramen specialty shop 'Kani wo' in Asakusa, Tokyo on May 4th — and just days after opening, it was hit with a fierce backlash, mainly on social media.

While promoting the shop as showcasing "the goodness of Japanese crab," it came out that he was actually using Chinese-made soft-shell crab, sparking the backlash. But why did Komeo's ramen shop get slammed so hard over this? There's a reason unique to ramen behind it.
88AnonymousSep 6, 2026 15:49
96AnonymousSep 6, 2026 15:50
Ah…
136AnonymousSep 6, 2026 15:54
【Patients】
Salmonella: 31 samples
Plesiomonas: 9 samples
Diarrheagenic E. coli: 2 samples
Staphylococcus aureus: 1 sample

【Staff】
Salmonella: 2 samples
Plesiomonas: 1 sample

Plesiomonas detected in 9 customers and 1 staff member??

A full-on department store of germs lmao
This isn't even at the level of "serving food" anymore!
150AnonymousSep 6, 2026 15:56
Re: #136
Wonder if the staph came from a healthcare worker
153AnonymousSep 6, 2026 15:56
Re: #136
With 9 people testing positive, this is almost certainly damage caused by the ramen
156AnonymousSep 6, 2026 15:56
Re: #136
It showing up in staff too means their hygiene management just wasn't happening at all
203AnonymousSep 6, 2026 16:01
🐶 So basically it smelled like a sewer ditch?
219AnonymousSep 6, 2026 16:02
Re: #203
I mean, the kitchen itself basically was the sewer ditch 🦞
220AnonymousSep 6, 2026 16:02
Re: #203
Isn't that just the smell of crawfish?
The other day I pulled some dried baby shrimp out of the fridge to put in fried rice, opened the bag, and it had that exact smell — freaked me out lol
Checked the date and it was way past expired
257AnonymousSep 6, 2026 16:06
Was it a shop that handled freshwater fish?
Given the season, maybe sweetfish (ayu)?
Farmed salmon or rainbow trout?
It's scary when the cause is unknown
303AnonymousSep 6, 2026 16:11
Re: #257
It's speculated to be eel
313AnonymousSep 6, 2026 16:11
Re: #257
Plesiomonas is a saltwater bacteria lol
Meaning it's a germ that's bad with salt… lol
But it's weak to heat lol
What did they even do lmaooo

Background and Key Points of This Story

The official announcement attributes the food poisoning to “Salmonella,” but the data released by Minato Ward shows that, beyond Salmonella in 31 patients, there were also 9 cases of Plesiomonas, 2 of diarrheagenic E. coli, and 1 of Staphylococcus aureus, with records showing Salmonella and Plesiomonas detected in staff as well. Plesiomonas lives in freshwater and brackish water and is rarely covered in standard food-safety training, leading to speculation on the thread that “the water in the kitchen itself may have been the contamination source.” Chef Komeo’s shop was also embroiled in controversy back in May over marketing Chinese-made crab as “Japanese crab,” and past reports based on his social media posts have pointed to lax hygiene practices. That said, it should be noted that which sample came from which ingredient has not been officially determined, and the reason multiple pathogens were detected simultaneously cannot be conclusively established from Minato Ward’s data alone.

*This article is excerpted and summarized from the 5ch (News Speed+) thread “A BreakingDown fighter’s shop served it… “Nasty gutter-river bacteria” found in chilled crab ramen from the Azabu-Juban Festival’s “78 food poisoning cases”.”

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