At a glance
Childhood immunization is a series of vaccines given to children from birth through adolescence to train their immune systems to recognize and fight specific infectious diseases before those diseases can cause harm.
Each vaccine contains a weakened, killed, or partial form of a pathogen (a germ that causes disease), or a harmless piece of its genetic instructions. The immune system responds by making antibodies (protective proteins). If the child later meets the real pathogen, the immune system recognizes it quickly and stops the infection before it becomes serious. Some vaccines need more than one dose to build lasting protection, which is why they are given on a schedule spread across childhood.
Medical Condition
Immunization is recommended for healthy children following the national or international schedule set by paediatric health authorities. The goal is to protect children against diseases that can cause serious complications, disability, or death, and to reduce the spread of those diseases in the wider community.
- Tuberculosis (TB): a bacterial lung infection, given shortly after birth.
- Hepatitis B: a liver infection caused by a virus, first dose given within 24 hours of birth.
- Diphtheria, tetanus, and pertussis (whooping cough): combined as the DTP vaccine.
- Polio: a virus that can cause permanent paralysis.
- Haemophilus influenzae type b (Hib): a bacterium causing meningitis (brain membrane infection) and severe pneumonia.
- Pneumococcal disease: a leading cause of pneumonia and meningitis in young children.
- Rotavirus: the most common cause of severe diarrhoea in infants.
- Measles, mumps, and rubella: given together as the MMR vaccine.
- Varicella (chickenpox): a highly contagious viral illness.
- Human papillomavirus (HPV): given in early adolescence to prevent cervical and other cancers.
- Influenza (seasonal flu): recommended annually for children from six months of age.
- Japanese encephalitis and typhoid: recommended in areas or seasons of higher risk.
Some children are not given certain vaccines, or vaccination is delayed, in specific circumstances. The paediatrician will review the child's health before each dose.
- Children with a known severe allergy to a previous dose of the same vaccine or to one of its ingredients.
- Children who are acutely unwell with a high fever on the scheduled day, usually postponed until they recover.
- Children receiving certain treatments that strongly suppress the immune system, who may need a modified schedule for live vaccines.
- Specific vaccine components are avoided in children with rare metabolic or immune conditions, as directed by a specialist.
Risks & Complications
Vaccines are among the most thoroughly tested medical interventions available, and most reactions are mild and short-lived. Serious reactions are rare.
- Soreness, redness, or swelling at the injection site: the most common reaction, usually settling within one to two days.
- Low-grade fever: common in the day or two after vaccination, particularly with the DTP vaccine.
- Irritability and crying in infants: expected and temporary.
- Tiredness or reduced appetite for a day or two.
- Mild rash, especially after the MMR or varicella vaccine, appearing about a week after the dose.
- Fainting (syncope): can occur in older children and adolescents shortly after the injection; clinics routinely ask patients to sit quietly for 15 minutes afterward.
- Febrile seizure (a brief convulsion triggered by fever): uncommon, more likely after MMR, and does not cause lasting harm in most cases.
- Severe allergic reaction (anaphylaxis): very rare, which is why children are observed after vaccination and clinics keep emergency treatment on hand.
Preparation & Procedure
Childhood immunization requires very little preparation from parents, and children do not need to fast beforehand. That said, a few simple steps help the visit go smoothly.
On the day of the appointment, the child can eat and drink normally. Dressing the child in clothing with easy access to the upper arm or thigh makes the injection simpler. Parents are usually asked to bring the child's immunization record booklet so the nurse can document each dose accurately. If the child has been unwell in the days leading up to the visit, parents let the clinic know in advance so the doctor can decide whether to proceed or reschedule.
Before the injection, the doctor or nurse asks a few questions about the child's current health, any allergies, any recent illnesses, and any medications the child is taking, including vitamins or herbal supplements. No special blood tests are needed for routine immunization. Children with complex medical histories may need a short review with a paediatrician first.
- The nurse checks the child's weight and, for infants, age in weeks, to confirm the correct vaccine and dose volume.
- The vaccination site, usually the upper arm or the outer thigh in infants, is cleaned with an antiseptic (germ-killing) wipe.
- The vaccine is injected under the skin or into the muscle, depending on which vaccine is being given. Some vaccines, such as rotavirus, are given by mouth as drops.
- Pressure is applied to the site for a few seconds. A small plaster may be placed over it.
- The child and parent stay in the clinic for about 15 minutes so staff can check for any immediate reaction before leaving.
Aftercare
Most children return to their normal routine within a day or two of vaccination. Recovery from routine immunization is straightforward, though a few simple measures help manage common reactions at home.
- Soreness or swelling at the injection site can be soothed with a cool, damp cloth applied gently for short periods.
- A mild fever is usually managed with age-appropriate fever-reducing medicine such as paracetamol, as advised by the doctor. Aspirin is not given to children.
- Keeping the child hydrated with fluids and offering regular feeds to infants helps them recover comfortably.
- The child can bathe normally; the injection site does not need special wound care.
- Normal activity, including nursery or school, can usually resume the next day unless the child has a fever.
- Parents are told to seek medical attention if the child develops a high or persistent fever, an unusually large swelling at the site, a rash spreading beyond the injection area, difficulty breathing, or excessive inconsolable crying lasting more than three hours.
- The next dose in the schedule is booked before leaving the clinic, or a reminder is sent according to the clinic's system.
- The immunization record booklet is updated at every visit and kept safely, as schools, travel authorities, and future healthcare providers may ask to see it.
Cost & What Determines It
The cost of childhood immunization varies widely depending on where it is received, which vaccines are included, and whether the visit is part of a government program or arranged privately. Families researching immunization abroad will find that prices differ significantly between public and private facilities and between countries.
- Which vaccines are included: the basic schedule required by the national health authority costs less than an expanded schedule that adds optional vaccines such as varicella, HPV, or pneumococcal.
- Hospital or clinic class: private hospitals and international clinics charge more than community health centres or government immunization programs.
- Country of treatment: the same vaccine can carry very different price tags depending on local procurement costs, import duties, and healthcare market norms.
- Number of doses and visits: multi-dose vaccines spread across several visits each add a consultation fee where clinics charge per visit.
- Brand of vaccine: for some diseases, multiple licensed vaccine brands exist at different price points, and the clinic's supplier contract determines which is available.
- Consultation fee: some facilities include the doctor's review in the immunization price; others bill it separately.
- Cold-chain handling and storage: vaccines must be kept refrigerated throughout the supply chain, and this cost is sometimes itemized separately in private facilities.
A hospital or clinic package for a single immunization visit typically covers the vaccine itself, the injection or administration, and a brief post-vaccination observation period. Items often billed separately include the initial consultation or well-child check, any additional tests ordered during the visit, and the printed vaccination certificate or health booklet.
For Indonesian families, BPJS Kesehatan covers the core national immunization schedule at participating Puskesmas (community health centres) and government hospitals inside Indonesia. BPJS does not cover treatment abroad, and most Indonesian private insurance policies also exclude overseas medical care. Families who choose to have their child immunized at a private clinic abroad, whether for expanded vaccines or convenience, generally pay out of pocket or through private international health insurance. Requesting a written cost estimate that lists each vaccine and its fee individually, before travelling or booking, is the most reliable way to understand the full cost in advance.
Frequently Asked Questions
Does the vaccine injection hurt my child?
Most children feel a brief sting at the moment of injection, which usually passes within seconds. Afterward, the spot may be sore or slightly swollen for a day or two, and some children develop a mild fever. These reactions are normal signs that the body is responding to the vaccine.
How do I prepare my child before a vaccination visit?
No fasting or special preparation is needed before routine childhood vaccinations. It helps to bring your child's immunization record (their vaccination booklet) so the doctor knows exactly which vaccines are due. Dressing your child in a short-sleeved top makes the injection easier and quicker.
How soon after the shot should I worry, and what warning signs should I watch for?
Most side effects appear within one to two days and settle on their own. Contact a doctor if your child has a high fever that does not come down, cries for more than three hours without stopping, has difficulty breathing, or develops a rash spreading across the body. These signs are uncommon but deserve prompt medical attention.
How much does childhood immunization cost?
The cost depends on which vaccines are given, how many doses are scheduled in one visit, and the class of clinic or hospital providing the service. Some vaccines are available through government health programs at low or no cost, while others given at private clinics carry a separate fee. Requesting a written schedule and cost breakdown from the facility is the most reliable way to know what to expect.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
