During the suspension period, Stamford Catering Services cleaned and disinfected its premises, including equipment and utensils, and disinfected food preparation surfaces, tables and floors, the SFA said.

Food handlers have also completed and passed a food safety course, while food hygiene officers have completed and passed the WSQ Food and Beverage Hygiene Audit course, it adds .

The company also replaced cracked electrical outlets and their covers, and repaired the floor with water accumulation, SFA noted.

Following the lifting of the suspension, SFA said it will continue to place Stamford Catering Services under close monitoring to ensure it complies with food safety requirements.

The agency is also reviewing the results of investigations into the gastroenteritis outbreak and will not hesitate to take enforcement action if food business operators are found to be in breach of food hygiene regulations, a she indicated.

Violators could be fined up to S$2,000 (US$1,500) and, in the case of a continuing offence, fined up to S$100 for each day or part of a day during which the offense continues after conviction.