Organisers of Truck Festival in Oxfordshire shut down the Yorky Roast food truck on Sunday after receiving reports from on-site medical teams that several attendees had developed similar symptoms.
The stall was closed within 90 minutes of the first concerns being raised, festival organisers said.
Festivalgoers describe illness
Several people shared accounts on social media after becoming unwell during the weekend event. One festivalgoer said they had been forced to cut their weekend short after feeling "so poorly" following a meal from the stall.
Another wrote: "Got the worst food poisoning of my life" and said they had to leave the festival early, adding they were "still gutted".
A third attendee said: "Sunday became a complete write off" after eating at the stall on Saturday, adding: "[I] missed a lot of my favourite bands because of it." The account was reported by the BBC.
Investigation launched
A spokesperson for Truck Festival said: "Our health and safety team launched an immediate investigation and identified a third-party food vendor as the suspected source."
The spokesperson added that the stall "was removed from operation within 90 minutes of the first report" and confirmed the incident had been referred to Vale of White Horse District Council's environmental health team.
"We share the disappointment and frustration of those whose weekend was affected," the spokesperson said.
Council investigation
The council said it is aware of a "potential food poisoning outbreak" linked to the festival and confirmed an investigation is under way. In a statement, it said: "We are investigating the issue and are working with the food business, Truck Festival, UKHSA and the trader's own local registering authority."
The food truck is operated by Event Mobile Catering Limited, based in Cardiff.
This year's Truck Festival attracted a record crowd of 27,500 people to Hill Farm in Steventon, with The Maccabees, Two Door Cinema Club and The Wombats among the headline acts.
