Health authorities have confirmed salmonella as the cause of an outbreak of food poisoning that's affected more than 100 people.

Logan City Council shut down the Chin Chin Chinese restaurant at Springwood on Monday after dozens of people presented at hospitals with vomiting, stomach cramps, diarrhoea and other symptoms.

Salmonella bacteria . Credit:Rocky Mountain Laboratories

At least 110 people were affected, with the number expected to rise again in the next 24 hours as more people report.

The youngest victim so far is two years old, with the eldest in their 80s.