In a statement, the Singapore Food Agency (SFA) says it has downgraded food caterer's Elsie's Kitchen food hygiene grade to "C" with effect from 24 May 2019.
This adjustment took into account 52 reports of people getting gastroenteritis symptoms after consuming food from the caterer.
The grade will be reviewed in 12 months time.
In the mean time, SFA will place the Elsie's Kitchen catering operations' premises under surveillance.
