The Good News: Whooping Cough Is Getting Rarer
Here's something worth celebrating: whooping cough in children has become far less common worldwide over the past three decades. A major new study analysing global health data from 1990 to 2023 found that childhood pertussis—the medical name for whooping cough—has declined sharply across nearly every measure. Deaths from the disease dropped by more than half, and fewer children are contracting it overall.
For context, in 1990, about 108 infants per 100,000 babies aged 1–5 months died from whooping cough globally. By 2023, that number fell to 46 per 100,000. That's tremendous progress, largely thanks to widespread vaccination programmes in many countries, including Singapore.
But There's a Catch: Babies Remain Most Vulnerable
While the overall trend is positive, the research reveals something important for parents to understand: the youngest babies—those aged 1 to 5 months—remain disproportionately affected. Even as older children have seen greater protection, tiny infants continue to carry the highest disease burden.
In China, for example, infants in this age group show significantly higher rates of pertussis than older children. And here's the concern: after decades of decline, the projections suggest a slight reversal. Over the next decade (2024–2033), cases among infants aged 1–5 months are expected to creep upward slightly.
What This Means for Singapore and Asian Families
Singapore has one of the world's strongest immunisation programmes, with pertussis vaccination beginning at 2 months of age as part of the pentavalent vaccine. This is excellent protection. However, the research reminds us that no system is perfect, and vigilance matters.
In Asia, where population density is high in many urban areas, diseases spread easily. Singapore's diverse population also means families with relatives visiting from or living in countries with lower vaccination rates may face increased exposure risks. Additionally, newborns aged 0–2 months—before their first vaccine—are at particular risk. If an unvaccinated or partially vaccinated older sibling or caregiver contracts whooping cough, they can unknowingly pass it to a tiny infant, where the disease can be life-threatening.
The research underscores that one-size-fits-all thinking won't work. Families with young babies need targeted protection strategies, including considering vaccination for close contacts (like grandparents visiting from overseas) and being alert to symptoms in the household.
Three Practical Steps for Your Family
- Stick to the immunisation schedule. Singapore's childhood vaccination programme is world-class. Keep your child on track with pertussis vaccines (pentavalent at 2, 3, 5 months, plus boosters). Don't delay or skip doses based on convenience.
- Protect newborns through "cocooning." If you have a baby under 2 months at home, ensure close contacts—older siblings, grandparents, helpers—are up-to-date with pertussis vaccination. Ask visiting relatives about their vaccination status, especially those coming from countries with lower vaccination coverage.
- Know the warning signs. Early whooping cough looks like a common cold: runny nose, mild cough, and sneezing. After a week, the cough worsens and becomes severe with a characteristic "whoop" sound when breathing in. In very young babies, the cough may be minimal but they may struggle to breathe or stop breathing briefly. Seek medical attention immediately if your infant shows these signs.