Step 1: Rigorous Testing Before Approval

Vaccine development takes years — often 10 to 15 years — and involves several phases:

Only if all these steps show strong safety data does a vaccine get submitted for regulatory approval.

Step 2: Independent Review and Licensing

In Singapore, agencies like the Health Sciences Authority (HSA) and globally, bodies like the U.S. FDA, European Medicines Agency (EMA), and World Health Organization (WHO) carefully review all clinical trial data before a vaccine is approved for public use.

They don't just look for effectiveness — they scrutinize safety data, manufacturing quality, and even long-term follow-up results.

Step 3: Ongoing Monitoring After Approval

Even after approval, the work doesn't stop. Vaccines are continuously monitored through:

Any rare side effect that might occur in 1 in a million people can be quickly detected and investigated.

Common Concerns, Addressed

Can vaccines overload my baby's immune system?

No. Babies encounter thousands of antigens daily just by breathing, touching, and eating. The small number in vaccines is minimal in comparison.

Are there harmful ingredients?

Each component — whether it's a stabilizer, preservative, or adjuvant — is there for a reason and used in amounts proven to be safe.

Do vaccines cause autism?

No. Multiple large-scale studies involving millions of children worldwide have shown no link between vaccines and autism. The original study that made this claim was fraudulent and has been retracted.

Real-World Safety Data

Billions of doses are given every year.

Thanks to this global experience, health agencies have an incredibly clear safety record — far better than almost any other medicine or procedure.

The Takeaway

Vaccines go through more testing, review, and monitoring than nearly any other product your child will ever receive.

They're safe, effective, and constantly improving — because your child's health deserves nothing less.