On 2 December 2025, The Straits Times reported that the recent gastroenteritis outbreak affecting several pre-schools may have been caused not only by the usual bacteria commonly associated with food contamination, but also by viruses and bacterial toxins that do not show up in routine food tests.
As part of the expert panel interviewed, Dr Benjamin Yip, Consultant Gastroenterologist & Medical Director at Alpha Digestive & Liver Centre, emphasised that negative results for common bacteria do not fully rule out contamination. Other microbes or toxins can still cause illness, especially in high-volume kitchen operations.
In this article, we take the opportunity to explore what this means for everyday food safety — and how families can better protect themselves, especially with the festive season approaching.
What We Learned From the Recent Outbreak
Preliminary tests were negative for the six most common foodborne bacteria, yet more than 180 individuals developed symptoms.
Experts highlighted that many viruses, spores, or toxins do not appear in standard food testing.
Toxins produced by certain bacteria can remain active even after cooking, meaning contaminated food may appear normal.
Situations involving large-batch cooking, such as school kitchens or catered meals, carry higher risk as temperature control and handling practices become more challenging.
As stated in the ST article, Dr Yip advised:
“When handling large volumes of food and during peak periods, food safety risks may be higher… customers should also be vigilant and discard food that does not taste right.” — Commentary to The Straits Times, 2 Dec 2025
Everyday Food Safety: What This Means for You
Food poisoning can happen at home, in restaurants, or when consuming catered meals. To reduce risk, it helps to understand where contamination commonly arises.
Common Risk Factors
Improper temperature control during preparation or storage
Cross-contamination between raw and cooked food
Large-batch cooking, especially during peak seasons
Poor hygiene practices during food handling
When Food Poisoning Becomes Serious: Symptoms That Need Attention
While many cases of food poisoning resolve within one to three days, some symptoms suggest the need for prompt medical care:
Persistent vomiting or inability to keep fluids down
High fever above 38.5°C
Bloody diarrhoea
Severe or worsening abdominal pain
Signs of dehydration (dry lips, dark urine, dizziness)
Symptoms lasting more than 48–72 hours
Neurological symptoms (rare)
Seek medical evaluation if:
Symptoms are severe
The affected individual is very young, elderly, pregnant, or has chronic illnesses
There are concerns about dehydration or inability to take fluids
Prompt evaluation helps determine whether the cause is bacterial, viral, or toxin-related.
What to Do If You Suspect Food Poisoning Is Starting
Keep this handy during the festive season
1. Stop eating the suspected food straightaway
Even if others seem unaffected, avoid taking more.
2. Sip fluids regularly
Choose water, clear broths, or oral rehydration solutions. Avoid sugary drinks, caffeine, or alcohol.
3. Give the stomach a short rest
When ready, start with plain foods like porridge, toast, crackers, or bananas.
4. Watch for red-flag symptoms
Seek medical care if vomiting persists, fever rises, dehydration appears, or pain escalates.
5. Practise good hygiene
Wash hands frequently and avoid preparing food for others until symptoms settle.
Practical Food Safety Advice from Dr Benjamin Yip
Families can reduce risk with several simple but effective habits:
Cook and consume fresh where possible
Reheat leftovers thoroughly until steaming hot
Separate raw and cooked foods
Practice good hand hygiene
Trust your senses and discard questionable food
Strengthening Food Safety For Everyone
The recent ST coverage has sparked renewed attention on food safety in high-volume kitchen settings. Measures such as improved hygiene training, stricter temperature control, and expanded pathogen testing can all reduce future outbreaks.
With increased awareness and careful food practices at home — especially during festive gatherings — families can meaningfully lower their risk of foodborne illnesses.
