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Food poisoning can occur after eating California Pizza Kitchen at the restaurant or when frozen. The most common symptoms reported for CPK food poisoning are diarrhea and nausea. A recent Norovirus outbreak at a CPK location in Walnut Creek, CA affected 60 diners and test confirmed 3 employees sick with the virus.

Last updated: January 18, 2023

California Pizza Kitchen

Suspected food poisoning. Symptoms: Diarrhea, Nausea
Suspected source: mushrooms
Onset: about 10/12 hours
Duration: hopefully one day - not sure yet
Sick: 1
Additional information: I suspect it was mushrooms because I ate with 2 other people. Besides our pizzas we all ate the same exact appetizers... See More and salad and I was the only one who ate the mushroom pizza and later felt ill. | Symptoms: Diarrhea, Nausea See Less

Food poisoning from CPK frozen Margherita pizza purchased. Within 6 hours of eating, violent vomiting, dry heaving, headache, abdominal cramping, dizziness. Still recovering 2 days later. Knew immediately it was the pizza - that was all I had eaten, and all that was vomited. | Symptoms: Nausea, Vomiting, Headache, Dizziness, Stomach Pain See Less

Suspected food poisoning. Symptoms: Diarrhea,Nausea,Stomach Pain,Cramps
Suspected source: their Mac n' Cheese
Onset: .5 hours
Duration: .5 hours
Sick: 1
Additional information: i've had the mac n cheese so many times but i've never had this reaction | Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps See Less

Suspected food poisoning. Symptoms: Diarrhea,Nausea,Vomiting,Stomach Pain,Cramps
Suspected source: Cheez its or frozen cheese pizza
Onset: 4 - 6 hours
Duration: 10 hours
Sick: 1
Additional information: I had a LOT of cheez its throughout the day yesterday was snacking on them all day. Had a frozen pizza... See More for dinner around 6pm started getting stomach cramping around 9pm. Ate at home but purchased from here. | Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps See Less

I ate here last night around 9pm. Woke up at 6:30am and puked every 20-40 minutes until about noon. Then diarrhea took over. I’ve been in the bathroom every 15 mins pooping straight water. It’s 5pm now and I still can’t eat or hold down water. Never had such bad food poisoning in my life. | Symptoms: Nausea, Diarrhea, Vomiting See Less

My wife and i had not eaten anything together until we were here, may 11th 2022. She thought the sausage smelled a little off. A couple hours later we got sharp stomach pains and for the last 30 hours have had diarrhea. | Symptoms: Diarrhea, Stomach Pain See Less

I ate half of a California pizza kitchen with my boyfriend last night and then 3 hours later I was vomiting it all up and having explosive diarrhea. This lasted from 3:30 am - 6 am, then again from 8:45 am - 10:30 am. The vomit was bright yellow and we both do not feel better yet | Symptoms: Nausea, Diarrhea, Vomiting See Less

Last 30 days