Don't Wait for Your Child to Get Sick: Here's Why Early Vaccination is So Important

29 July 2026 3 min read

Isn't my child perfectly healthy? Why does he still need to be vaccinated?

This question still frequently arises among parents. In fact, vaccines are given when children are healthy so their bodies have the "resources" to fight disease before they are actually exposed.
Like wearing a seatbelt while driving, vaccines aren't meant to cure disease, but rather to provide protection if that risk arises.

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Why Do Children Need Vaccinations?

During their growth period, children's immune systems are still developing. This means they are more susceptible to various infectious diseases that can cause serious complications.

Through vaccination, a child's body is exposed to weakened germs or specific parts of germs so the immune system can develop antibodies. When the child encounters the actual virus or bacteria, the body is ready to fight it.
As a result, the risk of serious illness, complications, and even death can be significantly reduced.

Preventable Diseases Are Not Minor Illnesses

Some people may think of measles, polio, or whooping cough as rare diseases. In fact, these diseases can still occur, especially if immunization coverage decreases.
Some diseases that can be prevented by vaccines include:

  • Hepatitis B
  • Tuberculosis (TB)
  • Diphtheria
  • Pertussis (whooping cough)
  • Tetanus
  • Polio
  • Measles and Rubella
  • Pneumonia
  • Meningitis and encephalitis
  • Influenza
  • Rotavirus (causes severe diarrhea)
  • Mumps
  • Chickenpox
  • Hepatitis A
  • Typhus
  • Hand, Foot, and Mouth Disease

Some of these diseases can cause permanent disabilities, developmental disorders, and even be life-threatening.

Vaccines Don't Just Protect Your Child

When a child receives complete immunizations, they not only protect themselves but also help break the chain of disease transmission.
This is especially important for infants who are too young to receive certain vaccines, the elderly, and people with weakened immune systems. The more children who are vaccinated, the less chance there is of disease spreading in the community.

What If a Child Has a Fever After a Vaccination?

A mild fever, redness, or pain at the injection site are normal reactions. These indicate the immune system is working to build protection.
These symptoms usually only last one to two days and can be treated as directed by a doctor.
Conversely, the risks of not vaccinating a child far outweigh the mild side effects after immunization.

Don't Delay Immunization Schedules

Many parents delay vaccinations because their child appears healthy or they are worried about side effects. However, each vaccine has a specific timeframe for optimal protection.

The longer the delay, the longer the child will be without protection against certain diseases.
If a schedule is missed, parents don't need to worry. Doctors can help schedule catch-up immunizations so that children can still receive adequate protection.

The Best Health Investment Starts Today

As parents, we can't always protect our children from exposure to viruses or bacteria. However, we can prepare their bodies to be better prepared for them.
Vaccination is not just a shot, but a long-term health investment that provides protection from childhood to adulthood.

Doctor's Message

Dr. Deddy Iskandar, Sp.A., advises parents that "Every vaccine given is a small step that brings big benefits for a child's future. Don't wait until your child is sick to start protecting them. Complete immunizations according to schedule and consult a pediatrician to ensure your little one receives optimal protection."
 

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