During the suspension period, Stamford Catering Services cleaned and sanitised their premises, including equipment and utensils, and disinfected food preparation surfaces, tables and floors, said SFA.
Food handlers also re-attended and passed a course on food safety, while food hygiene officers re-attended and passed the WSQ conduct food & beverage hygiene audit course, it added.
The company also replaced cracked electrical sockets and its covers, and repaired the floor with water accumulation, noted SFA.
Following the lifting of suspension, SFA said it will continue to place Stamford Catering Services under close surveillance to ensure that it adheres to food safety requirements.
The agency is also considering the findings from the investigations into the outbreak of gastroenteritis and will not hesitate to take enforcement action if food operators are found to be in violation of food hygiene regulations, it said.
Offenders could be fined up to S$2,000 (US$1,500) and, in the case of a continuing offence, fined a maximum of S$100 for every day or part thereof during which the offence continues after conviction.