Beyond the Jab: Navigating Flu Season in Singapore with Confidence

In brief

• Influenza is not just a bad cold; it can lead to pneumonia, hospitalisation and life-threatening complications, especially in older adults and people with chronic conditions.
• In Singapore, flu circulates all year, so there is no need to wait for a particular month to be vaccinated.
• A yearly flu vaccine lowers your chance of catching flu and makes the illness milder and shorter if you do.
• Vaccination matters most if you are over 65, pregnant, or have a condition such as diabetes, heart disease, asthma or COPD.
• Antiviral medicines work best when started within 48 hours of symptoms, and can help people at higher risk or who are very unwell.
• Seek urgent help for increasing breathlessness, chest pain or tightness, confusion or drowsiness, persistent vomiting, or a very high fever despite medication.

We give flu vaccinations at our Punggol clinic. Book a vaccination appointment.

Why influenza deserves more respect than “just a bad cold”

Many people think of influenza (“the flu”) as a slightly worse cold, to be endured with rest and over-the-counter medicine. In fact, it is a different virus with very different consequences. It can flatten even healthy adults for a week or more. In older adults and people with chronic medical conditions, it can lead to pneumonia, hospitalisation and, in some cases, life-threatening complications.

Singapore does not have a single “winter season” for flu, as temperate countries do. Because of our climate and travel patterns, flu viruses circulate all year round. Peaks typically come in the middle of the year and again towards the year end. Vaccination, sensible precautions and, when needed, early treatment can tilt the odds in your favour.

Why the yearly flu jab still matters

The yearly flu vaccine remains the most important tool we have against influenza. It will not prevent every case, but it:

• lowers your chance of catching the flu
• makes the illness milder and shorter if you do get infected
• reduces the risk of serious complications and hospitalisation, especially in people who are more vulnerable

Why every year? First, protection from the vaccine fades; your immune system “forgets” a little as the months go by. Second, the virus itself keeps changing. Each year, experts around the world track which strains are circulating and update the vaccine to match. This season’s vaccine prepares you for the strains most likely to cause trouble now, not those common five years ago.

For most adults, one flu shot every 12 months is a practical and effective baseline. It matters even more if you are older or have a chronic condition such as diabetes, heart disease, asthma, COPD, or kidney or liver disease, because a bad flu infection can then be much more serious.

“But we don’t have winter here” – what flu season looks like in Singapore

If you have lived with four seasons, you may link flu with winter. Here, influenza circulates throughout the year, with two main peaks, so you don’t need to wait for a particular month. If you are due for your flu jab and the vaccine is in stock, it usually makes more sense to vaccinate now than to wait for a “perfect” time that keeps shifting.

When we plan your vaccination, we consider your age, medical conditions, previous vaccinations and travel plans. For example, if you often travel to countries with a clear winter flu season, you may benefit from timing your jab slightly differently.

Who should take influenza especially seriously?

Anyone can get the flu, and even fit young adults are sometimes surprised by how hard it hits. Exhaustion, high fever, intense body aches and a dry, hacking cough that disturbs sleep are common. Most people recover with rest and simple medication, but some groups are much more likely to develop complications:

• Older adults, especially those over 65, have a higher risk of pneumonia, hospitalisation and slower recovery.
• In asthma or COPD, flu can trigger a severe flare of breathing symptoms.
• In heart disease, flu can cause worsening chest pain or heart failure.
• Diabetes can be harder to control when you are acutely unwell.
• In kidney or liver disease, infection puts extra strain on these organs.
• Pregnant women are more vulnerable to severe flu, and many national guidelines make them a priority group for vaccination.

If you are in one of these groups, or live with or care for someone who is, flu vaccination is an important part of keeping your household safe. Newly arrived expatriates and travellers may not realise that their last flu jab was several years ago, or that flu circulates differently here. A short discussion at a clinic visit can clarify whether you are due.

“What if I still get the flu after vaccination?”

No vaccine is perfect, and some people get flu-like illness after the jab. This can happen if they are exposed before their immune system has fully responded, or if the virus changes during the season.

Even so, on average, vaccinated people who still get influenza have milder illness, fewer days of high fever, less risk of complications such as pneumonia, and a lower chance of needing hospital care. The flu jab works like a seatbelt: it does not stop every accident, but it greatly improves your chances of walking away safely.

Antiviral medications: an extra layer for those who need it

See a doctor early if you develop symptoms that sound like influenza, especially if you are in a higher-risk group. Typical symptoms are a sudden high fever, chills, severe body aches, headache, dry cough and profound fatigue. In some cases, we may prescribe antiviral medicines that act directly against the flu virus.

These medicines are not antibiotics. They work best when started within the first 48 hours after symptoms begin. For suitable patients, they can shorten the illness and lower the chance of complications. Not everyone with flu needs them, and they do not replace vaccination. They can be very helpful in selected cases, particularly older adults, people with chronic illnesses, and those very unwell at the start.

The decision is individual. We consider how long you have been sick, how severe your symptoms are, your other medical conditions, and whether there are vulnerable people in your household.

When to seek urgent medical attention

Most people with flu feel very unwell but gradually improve over several days. Seek urgent medical help, or go straight to the emergency department, if someone with flu-like symptoms:

• becomes increasingly breathless
• develops chest pain or a feeling of tightness in the chest
• seems confused or unusually drowsy
• cannot keep fluids down because of persistent vomiting
• continues to have a very high fever despite appropriate medication

This is especially important for older adults and people with chronic diseases.

Everyday habits that still matter

Everyday habits also play a big role in reducing the spread of flu and other respiratory infections:

• Wash your hands regularly.
• Avoid touching your eyes, nose and mouth with unwashed hands.
• Cover your mouth and nose when you cough or sneeze.
• Keep frequently touched surfaces clean at home and at work.

If you are acutely unwell, rest at home rather than “push through” at work or school. This helps you recover and reduces the risk of infecting colleagues, classmates, children or elderly relatives.

How we can help at Kenneth Tan Medical Clinic

We treat influenza prevention as part of your overall health plan, not a stand-alone checkbox on a screening form.

At a consultation, we review your age, medical history, medications and previous vaccinations. We ask about your home and work, and whether you have recently arrived from, or will travel to, other countries. We then discuss whether you should have the flu vaccine now, how it fits with your other vaccines, and what protection to expect.

If you are already unwell, we assess whether it is likely to be influenza, COVID-19, another respiratory infection or something else. We then talk through testing, treatment and home care.

Stay protected this flu season – and all year round

If you are unsure whether you need a flu jab, are new to Singapore, or want to discuss how best to protect your family, we would be glad to see you.

Book Your Appointment Online or call either clinic (details below) to speak with one of our doctors about influenza vaccination and flu prevention.

Get in touch

Punggol — 658 Punggol East, #01-04, Singapore 820658 · Tel 6312 4589

Joo Chiat — 172 Joo Chiat Road, #01-01, Singapore 427443 · Tel 6920 1952

Email — admin@ktmc.sg

References

• Communicable Diseases Agency (CDA), Singapore. Influenza — seasonal (year-round circulation with peaks in May to August and December to March; groups recommended for vaccination). 2026. cda.gov.sg
• Communicable Diseases Agency (CDA), Singapore. Vaccinations (National Childhood and National Adult Immunisation Schedules). 2026. cda.gov.sg
• HealthHub, Singapore. Influenza vaccine. National Medication Information workgroup. 2026. healthhub.sg
• World Health Organization (WHO). Influenza (seasonal). Fact sheet, 28 February 2025. who.int
• National Drug Formulary (NDF), Singapore. Tamiflu capsule 30 mg [SIN13506P]: product information (efficacy shown when treatment starts within two days of symptom onset). ndf.gov.sg

This information is for general education only and is not a substitute for medical advice. Please see a doctor for advice about your own situation. v1.1 · October 2026 · Review due October 2028.