The number of probable cases of E.coli linked to a north Belfast restaurant appears to be levelling off, the Public Health Agency (PHA) has said.
There are 98 confirmed and 175 likely cases, according to the PHA.
Flicks restaurant in the Cityside Mall complex closed after becoming aware of the food poisoning.
A spokeswoman for the PHA said the rise in the number of confirmed cases was not unexpected and followed further testing.
"The number of probable cases appears to be levelling off as fewer new reports are coming forward," she said.
E.coli bacteria can take a number of days before symptoms develop.
The outbreak has been described as the worst seen in Northern Ireland.
Management at the restaurant have voluntarily closed the premises and are co-operating with an investigation by the PHA and environmental health officers from Belfast City Council.
The PHA has said the strain of E.coli found this month was not the same as a strain linked to four cases connected to Flicks in August.