Immunization and Vaccination in Children (2023)

Immunization In Children

When a person is immunized, usually through the administration of a vaccine, they become immune to or resistant to an infectious disease. Vaccines boost the body's natural defenses against sickness and infection by boosting immunity.

It is believed that vaccination prevents between 2 and 3 million deaths annually and is a proven method for eradicating infectious diseases that are life-threatening. It is one of the most economically beneficial investments in health, and it can be accessed by even the most vulnerable and difficult-to-reach people thanks to tested methods. It has well defined target populations, can be effectively administered through outreach initiatives, and vaccination doesn't call for a significant change in lifestyle.

In India free vaccines are provided against 11 life threatening diseases which includes

  1. Tuberculosis
  2. Diphtheria
  3. Pertussis
  4. Tetanus
  5. Polio
  6. Hepatitis B
  7. Pneumonia
  8. Haemophilus Influenzae type B (Hib)
  9. Measles
  10. Rubella
  11. Japanese Encephalitis (JE)
  12. Rotavirus diarrhea. (Rubella, JE and Rotavirus vaccine are available in selected states and districts)

Read this blog further to get a quick overview of this important topic for PEDIATRICS and ace your NEET PG/NExT exam preparation.

National Immunization Schedule

Immunization is a fundamental requirement for all children as it is one of the most important and cost effective strategies for the prevention of childhood illnesses and disabilities and is thus a basic need for all children. And through this programme many childrens were helped which were not vaccinated because they were living in backward areas. Vaccine schedule of children is as explained in the following table.


When to give

Maximum age




For Pregnant Women

Tetanus & adult Diphtheria (Td -1)

early pregnancy




Upper arm

Tetanus & adult Diphtheria (Td -2)

4 weeks after 1st dose of Td*




Upper arm

Tetanus & adult Diphtheria (Td booster)

received 2 doses of pregnancy in the last 3yrs




Upper arm

For Infants

BCG (Bacillus Calmette Guerin)

At birth or to be given within 1 year of age.

At birth till one year

0.1 ml (0.05 ml until 1 month age)


Left Upper Arm

Hepatitis B - Birth dose

At birth or within 24 hours

At birth within 24 hours

0.5 ml


Antero-lateral side of mid-thigh

Oral Polio Vaccine (OPV) -0

At birth or within first 15 days

Within the first 15 days

2 drops



Oral Polio Vaccine (OPV) -1,2,3,

6 weeks, 10 weeks & 14 weeks

Till 5 years of age

2 drops



Inactivated Polio Vaccine (IPV) 1 & 2

6 weeks & 14 weeks

1 year of age

0.1 ml


Right Upper arm

Pentavalent vaccine (Diphtheria, Pertussis, Tetanus, Hepatitis B, Hib)- 1, 2 & 3

6 weeks, 10 weeks & 14 weeks

1 year of age

0.5 ml


Antero-lateral side of mid-thigh

Rotavirus Vaccine (RVV) 1, 2 & 3

At 6 weeks-1st dose

10 weeks-2nd dose

14 weeks-3rd dose

1 year of age

5 drops (lyophilized vaccine)



Pneumococcal Vaccine (PCV) 1, 2 & Booster

At 6 weeks-1st dose

14 weeks -2nd dose

9 months-booster

1 year of age

0.5 ml


Antero-lateral side of mid-thigh

Measles-Rubella (MR) 1

9 completed months - to 12 months. Given up to 5 yrs of age and if not received then at 9 - 12 months age

5 years of age

0.5 ml


Right upper arm

Vitamin A (1st dose)

At 9 completed months

5 years of age

1ml (1 lakh IU)



Japanese Encephalitis (1st Dose)***

At 9 completed months - 12 months

15 years of age

0.5 ml

Subcutaneous (live vaccine) Intramuscular (killed)

Left upper arm and at the anterolateral side of mid thigh

For Children and adolescents

Diphtheria Pertussis Tetanus (DPT) booster 1

16- 24 months

7 years of age

0. 5 ml

Intra- muscular

Antero-lateral side of mid-thigh

MR 2

16-24 months

5 years of age

0.5 ml


Right Upper arm

OPV Booster

16-24 months

5 years of age

2 drops



Japanese Encephalitis***(if applicable)

16-24 months

15 years of age

0.5 ml


Left Upper Arm

Vitamin A***(2nd to 9th dose)

18 months (2nd dose). After this one dose is repeated after every 6 months upto the age of 5 years.

5 years of age

2 ml (2 lakh IU)



Diphtheria Pertussis Tetanus Booster (DPT) booster 2

5- 6 years

7 years of age

0.5 ml


Upper arm

Tetanus & adult Diphtheria

10 years &16 years

16 years of age

0.5 ml


Upper arm

Pre-pregnancy doses of Td-2 or booster should be administered. But even if more than 36 weeks have gone, still provide these. If a woman in labor has never gotten Td, give it to her now.

JE vaccination at certain endemic districts; pentavalent vaccine (including diphtheria, pertussis, tetanus, hepatitis B, and hib)

As part of the Universal Immunization Programme, rotavirus vaccine (RVV)

Every year, 37 out of every 1000 children born in India do not live to see their fifth birthday, and diarrheal fatalities are one of the main causes of this. Of all the causes of diarrhea, rotavirus is the most common in children under the age of five. Rotavirus is thought to be responsible for 8,72,000 hospital admissions, 32,70,000 outpatient visits, and an estimated 78,000 fatalities per year in India. The availability of the Rotavirus vaccine will make it possible to tackle the issue of diarrheal deaths head-on.

A staggered rollout of the rotavirus vaccination began in 2016 with the original targeting of 4 states, and by the end of the year, 11 states had received it.

Pentavalent vaccinations

The DPT (diphtheria, pertussis/whooping cough, and tetanus), Hepatitis B, and Hib vaccines are included in the pentavalent vaccine. The immunization programme already includes the DPT and Hepatitis B vaccines. In the nation, pentavalent vaccines are gradually replacing them. Each intramuscular 0.5 ml dose of the pentavalent vaccine will be administered using syringes in the mid-thigh area.

When pentavalent vaccines are released, the updated immunization schedule will be as follows.

BCG, Hep B birth dose, OPV-OAt Birth
Pentavalent (which includes DPT + Hep B + Hib), OPV6 weeks, 10 weeks and 14 weeks
Measles and Vitamin A9-12 months
DPT booster, OPV booster, Measles2*16-24 months
DPT booster5-6 years

Recommendations of IAP (Indian Academy of Pediatrics)

The national schedule has the full backing and endorsement of the Indian Academy of Paediatrics, the largest professional organisation of paediatricians in our nation. It offers the above-described regimen in addition to extra shots like the MMR (measles, mumps, and rubella) vaccination and the hepatitis B vaccine. It is important to keep in mind that although rubella may seem like a little disease, it has the serious potential to result in congenital problems in a baby whose mother is not immune to the infection and contracts it during the first trimester.

BirthBCG, OPV 0, Hepatitis B -1
6 weeksOPV-1, Penta-1, fractional-IPV-1, PCV-1, Rota-1
10 weeksOPV-2, Penta-2, Rota-2
14 weeksOPV-3, Penta-3, Rota-3, Fractional IPV-2, PCV-2
6 monthsInfluenza 1
7 monthsInfluenza 2
6-9 monthsTyphoid Conjugate Vaccine
9 monthsMMR I, PCV-booster, Japnese encephalitis, Vita-A-1
16-24 monthsDPT Booster-1, Measles Rubella -2, OPV Booster, Japnese Encephalitis-2, Vit-A-2
5-6 YearsDPT-Booster 2 (No OPV)
10-16 YearsTD (Instead of TT)

Abbreviations of the Vaccination Are

  1. BCG: Bacillus Calmette Guerin
  2. OPV: Oral poliovirus vaccine
  3. DTwP: Diphtheria, tetanus, whole cell Pertussis
  4. DT: Diphtheria and tetanus toxoids
  5. TT: Tetanus toxoid
  6. Hep B: Hepatitis B vaccine
  7. MMR: Measles, Mumps and Rubella Vaccine
  8. Hib: Haemophilus influenzae Type ‘b’ Vaccine
  9. IPV: Inactivated poliovirus vaccine
  10. Td: Tetanus, reduced dose diphtheria toxoid
  11. HPV: Human Papillomavirus Vaccine
  12. PCV: Pneumococcal Conjugate Vaccine
  13. TdaP: Tetanus and Diphtheria Toxoids and a Cellular Pertussis Vaccine

Mission Indra Dhanush

  • It was Launched by the Ministry of health and family welfare by the Government of India on 25th Dec 2017.
  • Mission was to Improve immunization Courage from 65%, in 2014 at least 96 % over 5 years through special catch up drives.
  • It Included vaccines against
TB (BCG)Polio
PertesisHep B

Queries Related To Vaccination

  • If a child is +snt with upper respiratory tract infection on the due date of vaccination then Give vaccines to this child there is no need to postpone the vaccinations in case of minor diseases. Vaccine to be postponed only During serious illness.
  • If vomiting occurs after OPV then in this case If vomiting had occurred within 30 minutes then repeat the vaccination otherwise not.
  • In case of Lapsed (missed vaccination on the due date) immunization: We will continue only from missed vaccines there is no need to restart vaccine series regardless of time. Give the vaccine as per schedule.
  • Preponed immunization: If given 5 or more days before the due date then that dose is not counted we need to repeat it.
  • Unknown immunization status: Child should be considered immunized and vaccinated accordingly.
  • What vaccines should be given to unimmunized child: measles Rubella Vaccine
    • DTP (7 year – Tdap)
    • Hib (If < 5 years age)
    • OPV (If < 5 year age)
    • BCG (if <1 year age)
    • -Hep B (if 1 year age)
  • Vaccines contraindicated in Egg allergy_ Yellow fever & Influenza
  • Vaccines causing Thrombocytopenia – Measles vaccines
  • Strains including in meningococcal vaccine – A, C, Y w – 135
  • Streat sensitine vaccine – OPV, re. cons t. BCG, Measles
  • Light sensitive vaccine – Measles, BCG, Rota V, Jap E
  • Freeze sensitive vaccine – Hep B, Penta valent, TT, DPT

Vaccine vial monitor

  • Heat sensitive labels are present on the vial that indicate cumulative heat exposure over time to that vaccine vial.
  • If color of square is lighter than the outside circle → the we can use vaccine
Immunization and Vaccination in Children (1)
  • If color is same or darker →then we can't use vaccine
  • Number present on the vial Indicates the no. of Days, the vaccines Remain potent, when exposed to 37°C.
  • Test done to check for cold Damage to the vaccine due to free tiny is k/n as ‘SHAKE TEST. In this test the vaccine vial is shaked and if the Precipitate is formed then this vaccination vial should be disposed of.

Open VIAL Policy

It allows the reuse of partially used multidose vials in subsequent immunization sessions (upto 4 weeks) in following conditions

  • Expiry date not reached
  • Cold chain is maintained
  • Date of opening of vial is clearly mentioned
  • Aseptic technique used to withdraw vaccine
  • Vaccine vial septum not submerged in water

Open vial policy is applicable for the following vaccines:

  • DPT
  • TT
  • Hep B
  • PCV
  • Pentavalent
  • OPV
  • IPV

Open vial policy is not applicable for following vaccines:

  • Measles/MR
  • BCG
  • Rota virus
  • JE vaccine

Vaccines Recommended in Adolescent

  • Tdap – HPV
  • Td – Influenza Rabies
  • TT – Japanese encephalitis
  • Pneumonococcal

Cocoon Strategy

Vaccination of persons from the immediate environment, of persons who are suspectial to disease but cannot be immunized.

Recommended sequence in which vaccines should be given:

  • Oral → Intradermal → SC → IM

Immunization in special situations

Immunization in Special Situations

  • In HIV positive children
    • In asymptomatic HIV positive children, all vaccines can be given except OPV
    • In symptomatic children with HIV, all live vaccines are contraindicated while all killed vaccines can be given
  • In Immunocompromised child (including child on oral steroids/chemotherapy)
    • These children should not receive any live vaccine till at least 1 month after discontinuation of steroids or chemotherapy
      • It can cause that disease (against which vaccination is given) due to low immunity
    • Killed vaccine can be safely given (immunogenicity might be doubtful)
    • Pneumococcal vaccines and annual influenza vaccines must be given
    • Sibling of these children should not receive transmissible live vaccine like OPV
      • Oral polio virus is going to be shed in stools and these children with household contact can get infected
  • For a child on corticosteroids, Immunization schedule:
    • Needs to be modified if - Child is on oral steroids at a dose of ≥ 2 mg/kg/day or receiving ≥ 20 mg/day prednisolone
    • Does not need to be modified if – Child is on inhaled corticosteroids (bronchial asthma) or topical steroids or ointment or cream (dermatological condition)
  • Immunization of a child with
    • Primary immunodeficiency
    • Planned splenectomy
      • Certain conditions like hereditary spherocytosis, hypersplenism, thalassemia or Gaucher disease with massive spleen and hypersplenism, refractory ITP
      • In all children with severe immunodeficiency whether it is B cell group i.e., X-linked agammaglobulinemia or severe T cell immune deficiency like SCID (Severe Combined Immunodeficiency) – All live vaccines are contraindicated
      • Ensure at least 2 weeks before a planned splenectomy, child should have been immunized against capsulated organisms like pneumococcus, meningococcus & Haemophilus influenzae (As spleen protects against these capsulated organism)
      • For pneumococcal vaccine – PCV (give immune memory) + Polysaccharide vaccine should be given (protects against all 23 strains of pneumococcus)
  • Immunization of child with known coagulation disorder (e.g., Hemophilia)
    • There is formation of large bruises on site of intramuscular injection and sometime bleeding may not stop after injection
    • Give vaccines subcutaneously instead of intramuscularly so chance of formation of hematoma is less e.g., Hib, Pneumococcal polysaccharide vaccines
    • Schedule immunization, shortly after administration of factor therapy (factor 8 in case of hemophilia)
    • Use smaller size needle (23 G or even smaller than that)
    • Apply firm pressure at injection site for at least 5-10 minutes as to stop bleeding quickly
  • Immunization of babies born preterm
    • All vaccines can be given at chronological age as recommended by National Immunization Schedule
    • Birth vaccines – BCG and OPV-0 are given after initial stabilization (preferably at time of discharge)
    • So other vaccines will also be delayed by 4 weeks according to general principle of immunization

Hep B is given as soon as possible after birth to prevent vertical transmission from mother to child along with Vit k.

BCG (Bacillus Calmette Guerin) vaccine

Calmette and Guerin were the first scientists who invented BCG vaccine Against bacteria: Mycobacterium tuberculosis Strain commonly used: Copenhagen (Danish 1331) or Pasteur strain. 3Ls

  • Live attenuated vaccine
  • Light sensitive (comes in dark ampoule)
  • Lyophilised vaccine (comes in powder form and needs to be dilute with diluent)

The Diluent used for BCG vaccine Normal saline is used as diluent (supplied along with vaccine vial) Distilled water is not used as it will irritate the skin. The Dosage is 0.05 ml till 1 month of age and Beyond 1 month: 0.1 ml. Route of administration: Intradermal. Maximum age till BCG can be given as per NIS guidelines: 1 year. In India as tuberculosis is endemic condition so by 1 year of age all the children would have been exposed to blood TB virus in some way or another IAP used to recommend BCG vaccine till 5 years of age but according to NIS it is to be given till 1 year of age .Normal response following BCG vaccination

Papule → Ulcerate → Crust formation → Scar formation (by age of 6-8 weeks)

  • Adverse effects of bcg vaccine are:
    • Suppurative lymphadenitis (common)
      • Lymph nodes of left axilla becomes enlarged and become pus filled
    • BCG osteitis (bone infection)
    • Disseminated BCG infection (in immunodeficient child)
  • Protective effect: 0-80%
    • It does not give protection against pulmonary COX much
    • It protects mainly against severe forms of TB i.e., TB meningitis or disseminated TB
    • It does not give protection against TB infection

Polio vaccines

There are 2 types of polio

  • OPV (Oral polio vaccine)/Sabin: Live attenuated vaccine
  • IPV (Injectable polio vaccine)/Salk: Killed vaccine
  • Strains of polio virus used in OPV: P1 & P3 P2 strain was globally discontinued in April 2016. According to WHO recommendations P2 strain to be no longer used in OPV. Only P1 and P3 strains are used in OPV. WHO no longer recommends an OPV only schedule; at least 1 dose of IPV should be there in NIS. IPV not only protects against polio virus but it also protects against disease caused by vaccine derived polio viruses

VAPP (Vaccine Associated Paralytic Polio)

  • Cases of AFP (Acute flaccid paralysis) having residual weakness 60 days after the onset of paralysis & from whose stool samples vaccine related polio viruses have been isolated

VDPV (Vaccine Derived Polio Virus)

  • Arise due to mutation and recombination of the vaccine polio virus in human gut
  • They are 1-15% divergent from parent vaccine strain

Hepatitis-B vaccine

Route of administration: Intramuscular, on anterolateral aspect of thigh. Dosage: Birth dose: As soon as possible after birth It helps in prevention of transmission of hepatitis B infection from mother to baby. Subsequent dosage is given as part of Pentavalent vaccine according to NIS at – 6,10,14 weeks. If the mother is Hepatitis B positive then Hep B vaccine is given immediately after birth to the baby. If Hep B negative immunoglobulin ideally within 12 hours after birth

Complete Hep B vaccination series at 2 & 6 months

DPT vaccine

DPT vaccine protects against 3 diseases i.e. Diphtheria, Pertussis, Tetanus. Dosage is given at 6 weeks, 10 weeks, 14 weeks. Booster: 16-24 weeks. 2nd booster: 5-6 years. It is given as a part of pentavalent vaccine according to NIS. Route of administration Intramuscular, on anterolateral aspect of left thigh. Adverse effects are:

  • Local effects: Redness, pain at site of injection
  • Systemic effects: Fever
  • Severe adverse effects
    • Persistent inconsolable cry (> 3 hours)
    • Seizures
    • Hypotonic hyporesponsive episodes
    • Encephalopathy/altered sensorium
    • Anaphylaxis

Contraindications to DPT vaccines

  • Progressive neurological illness
  • Cerebral palsy (static neurological illness): Not a contraindication to DPT vaccine
  • Anaphylaxis to a previous dose of DPT vaccine
  • Encephalopathy within 7 days of previous dose of DPT vaccine

Recommended catch up schedule for children who did not receive DPT vaccine

  • ˂ 7 years of age: DPT is given at 0,1,6 months
  • > 7 years of age: Tdap (lesser dose of Diphtheria and Pertussis) at first visit
    • Followed by Td & Td: 0,1,6 months

Pentavalent vaccine

  • Component of pentavalent vaccine used in National Immunization Schedule
    • Diphtheria
    • Pertussis
    • Tetanus
    • Hepatitis B
    • H. influenzae type B
  • Dosage, route, and site of administration: 0.5 ml intramuscularly at anterolateral aspect of left thigh at 6, 10, 14 weeks according to NIS

Measles vaccine

It is a Live-attenuated vaccine. Strain used for the measles vaccine are the Edmonston Zagreb stain. Diluent used for the measles vaccine is Distilled water. Route: Subcutaneous route (right upper arm). Recommended age: 9 completed months – 12 months of age. In case of measles outbreak: Measles vaccine can be given between 6-9 months of age as post exposure prophylaxis

  • Dose given before 9 completed month age is not counted as part of NIS
  • If a dose of measles vaccine is given before 9 months, it is still required to be given at 9 months and booster dose – 16-24 months
  • Adverse effects
    • Local effects: Pain, redness, tenderness
    • Fever
    • Mild measles like illness (rashes)
    • ThrombocytopeniaPneumococcal vaccine
  • There are 2 types of pneumococcal vaccine

PCV (Pneumococcal conjugate vaccine)

PPV (Pneumococcal polysaccharide vaccine)

  • Previously available - 7, 10 valent vaccines
  • Currently - 13 valent vaccine available
  • Contains 23 strains of pneumococcus
  • It is a part of NIS
  • Given to all children at 6 weeks, 14 weeks, and 9 months
  • Not a part of NIS
  • Given to high risk individuals
    • Child undergoing splenectomy
    • Immunocompromised child
    • Underlying respiratory conditions
    • Chronic illness
  • Advantage: Can be given at ˂ 2 years of age
  • Can only be given beyond 2 years of age
  • It produces good immune memory
  • No good immune memory
  • Advantage of PPV: It protects against 23 strains of pneumococcus
    • It gives much wider protection than PCV
  • Recommendation about pneumococcal vaccine in our National Immunization schedule
    • PCV: 13: 6, 14 weeks & booster dose at 9 months
    • Dose: 0.5 ml given at anterolateral aspect of right thigh
    • Catch up immunization schedule – till 1 year of age
    • Route of administration of both PCV & PPV: Intramuscular

Rotavirus vaccine

It is Recently introduced in the National Immunization Schedule. Dosage is given on 6, 10, 14 weeks. It is a Type of Live attenuated oral vaccine. Recently, 116 E strain of rotavirus was found in AIIMS NICU. It is now used to produce Indian rotavirus vaccine

  • Adverse effects
    • Intussusception
    • Rotavirus vaccine is contraindicated if child has history of intussusception
  • Catch up immunization schedule: Permissible upto 1 year of age

Hepatitis A vaccine

It is not a part of the National Immunization Schedule. But the Indian Academy of Pediatrics recommends that it should be given to all healthy children. Type of vaccines

  • Live vaccine: Single dose
    • Age of administration for live vaccine: 12-23 months
  • Inactivated vaccine: 2 doses required 6 months apart
    • First dose is given at 1 year of age

Typhoid vaccine

  • Types of typhoid vaccine are:
    • Vi Capsular polysaccharide vaccine (Used previously)
    • Typhoid Conjugate vaccine (newer vaccine)

Typhoid VI Capsular polysaccharide vaccine

  • It can be given only beyond 2 years of age
  • No good immune memory → Repeat dose is required every 3 years
  • Efficacy: 50-60%

Typhoid conjugate vaccine

  • It can be given at ≥ 6 months of age
  • Single dose is given
  • Efficacy: 90%

Varicella vaccine

  • It is a type of Live-attenuated vaccine
  • Strain used for varicella vaccine is Oka strain
  • Route of administration: Subcutaneous
  • Dosage
    • 1st dose: 15 months of age
    • 2nd dose: 4-6 years of age
  • IAP recommendations
    • It should be given to all children with no previous history of varicella
  • For post- exposure prophylaxis
    • Ideally given within 3 days of exposure, but can be given upto 5 days following exposure to prevent development of varicella infection

HPV (Human Papillomavirus) vaccine

  • It is a recombinant DNA vaccine
  • Types
    • Quadrivalent vaccine (Gardasil)
      • It protects against HPV serotype 6,11,16,18
    • Bivalent vaccine (Cervarix)
      • It protects against HPV serotypes: 16,18
  • Protective efficacy: 99% against vaccine type related genital warts & vulvar and vaginal neoplasia
  • Minimum age at which HPV vaccine recommended: 9 years
  • It should be started before first sexual activity
  • HPV should be given to all female children
  • Maximum age for catch up schedule: 13-45 years of age
  • Recommendation according to WHO SAGE (Strategic Advisory Group of Expert/ Committee) protocol for HPV vaccination (April 2022)
    • For 14-19 years old girls - Either 1 or 2 doses of HPV vaccine can be given

Influenza vaccine

  • Types of vaccine of influenza includes:
    • Inactivated vaccine: Whole virus/Split product
    • Egg based vaccine
    • Cell culture vaccine (for egg allergic individuals)
    • Recombinant technology derived vaccines
    • Nasal live attenuated vaccine (not available in India)
  • Regime for inactivated vaccine: 2 doses intramuscular, 4 weeks apart followed by annually
  • Every year strains of Influenza vaccine changes based on WHO recommendation
  • Annual influenza vaccine should be given to all the high risk individual like elderly immunocompromised children, or children with chronic disease
  • Latest WHO recommendation for the Influenza vaccine composition for 2022-23 for northern hemisphere
    • A/Wisconsin/588/2019 (H1N1)
    • A/Darwin/6/2021 (H3N2)
    • B/Austria/1359417/2021 (B/Victoria Lineage)
    • B/Phuket/3073/2013 (B/Yamagata lineage)

This is everything that you need to know about IMMUNIZATION for your PEDIATRICS PREPARATION. For more interesting and informative blog posts like this download the PrepLadder App and keep reading our blog!


What's the difference between immunization and vaccination? ›

Vaccination: The act of introducing a vaccine into the body to produce protection from a specific disease. Immunization: A process by which a person becomes protected against a disease through vaccination.

What vaccine for fully immunized child? ›

A child can be defined as fully immunized if they have received a Bacillus Calmette-Guerin (BCG) vaccination; three doses of the Diphtheria, Pertussis, and Tetanus (DPT) vaccine; three doses of the polio vaccine; and a measles vaccine, and should be fully immunized within the first year of life.

What does immunization mean for children? ›

Immunization is a way to protect your child from getting many different infections and diseases. Many of these illnesses spread easily from child to child and can cause serious health problems. They can even cause death.

What 3 vaccines should you receive during childhood? ›

  • Diphtheria, tetanus, and pertussis (DTaP) vaccination. (minimum age: 6 weeks [4 years for Kinrix® or Quadracel®]) Routine vaccination. ...
  • Hepatitis A vaccination. (minimum age: 12 months for routine vaccination) Routine vaccination. ...
  • Measles, mumps, and rubella vaccination. (minimum age: 12 months for routine vaccination)

What are the three types of immunization? ›

There are several types of vaccines, including: Inactivated vaccines. Live-attenuated vaccines. Messenger RNA (mRNA) vaccines.

Is a flu shot a vaccine or immunization? ›

Influenza (flu) vaccines (often called “flu shots”) are vaccines that protect against the four influenza viruses that research indicates will be most common during the upcoming season. Most flu vaccines are “flu shots” given with a needle, usually in the arm, but there also is a nasal spray flu vaccine.

Did I get a polio vaccine as a child? ›

You may find records that confirm what vaccinations you've had. If your parents are alive, ask them if you got routine vaccinations as a child. Their memory may be enough to strongly suggest that you're protected. If your pediatrician's office still operates, you can ask them for a copy of your medical records.

What vaccines do you really need? ›

All adults need a seasonal flu (influenza) vaccine and Td or Tdap vaccine (Tetanus, diphtheria, and pertussis) but there may be additional vaccines recommended for you.

How many types of immunization are there? ›

Five types of vaccines are currently available: Live virus vaccines use the weakened (attenuated) form of the virus.

What are the disadvantages of getting vaccinated? ›

The most common side effects after vaccination are mild. They include: Pain, swelling, or redness where the shot was given. Mild fever.

Which vaccines Cannot be given together? ›

If both pneumococcal conjugate vaccine (PCV) and 23-valent pneumococcal polysaccharide vaccine (PPSV23) are indicated for a high-risk patient, these vaccines should not be given at the same visit.
Related Tools:
MenACWYVaricella (chickenpox)
MenBZoster (shingles)
10 more rows
Dec 28, 2022

Why does the CDC recommend immunizations? ›

It ensures your baby's immune system gets the help it needs to protect your child long-term from preventable diseases. Not vaccinating your child on time can make someone else sick.

What are the most necessary vaccines for children? ›

Immunization Schedule
  • Diphtheria, tetanus and whooping cough (pertussis) (DTaP)
  • Polio (IPV)
  • Measles, mumps and rubella (MMR)
  • Chickenpox (varicella)
  • Influenza (flu) every year.
Nov 22, 2016

When did they stop polio vaccine? ›

The oral poliovirus vaccine (OPV) is a weakened live vaccine that is still used in many parts of the world, but hasn't been used in the United States since 2000.

What is a common childhood vaccine? ›

Common vaccines given in childhood include: Influenza. Diphtheria, tetanus, and pertussis vaccine (DTaP) Hepatitis A and B. Polio.

Why are vaccines important for children? ›

Vaccines can prevent common diseases that used to seriously harm or even kill infants, children, and adults. Without vaccines, your child is at risk of becoming seriously ill or even dying from childhood diseases such as measles and whooping cough.

Why should children be vaccinated? ›

Immunizations can save your child's life.

Some diseases that once injured or killed thousands of children have been eliminated completely, and others are close to extinction – primarily due to safe and effective vaccines. Polio is one example of the great impact that vaccines have had in the United States.

What are the 3 most important vaccines? ›

Here's a look at the six important vaccines every adult needs.
  1. Tdap or Td. Tetanus, diphtheria, and pertussis (whooping cough) are highly contagious and life-threatening, especially for infants under six weeks of age. ...
  2. MMR. ...
  3. Chickenpox. ...
  4. Hepatitis A and B. ...
  5. Flu. ...
  6. Pneumococcal.

Is there a vaccine for RSV? ›

Previous research has shown that RSV infection does not give a person lasting immunity afterward, and re-infection can happen throughout the lifespan. There is currently no FDA-approved RSV vaccine, but after nearly five decades of vaccine-development efforts, researchers are on the cusp of approval.

What happens if my child doesn't get the second flu shot? ›

The second dose results in the child's immune system producing enough antibodies so they will be able to fight off influenza when exposed. If your child didn't receive the second dose, they likely have some protection against the flu, but it may not be enough.

What is the MMR vaccine? ›

MMR vaccine is very effective at protecting people against measles, mumps, and rubella, and preventing the complications caused by these diseases. People who receive MMR vaccination according to the U.S. vaccination schedule are usually considered protected for life against measles and rubella.

What was the vaccine that left a scar? ›

Many foreign-born persons have received the bacille Calmette-Guerin (BCG) vaccine for TB disease. This vaccine is administered at birth in many countries outside of the U.S. to prevent childhood tuberculous meningitis and miliary disease. BCG leaves a scar like the smallpox vaccine.

Does a polio vaccine last a lifetime? ›

Other adults who are unvaccinated or incompletely vaccinated should talk with their doctor to understand their risk for polio and need for polio vaccination. Adults who completed their polio vaccination but who are at increased risk of exposure to poliovirus may receive one lifetime IPV booster.

Were kids in the 70s vaccinated for polio? ›

By the early 1970s most of the world was using Sabin's oral vaccine. Because of its lower cost and long-term efficacy, the World Health Organization included the Sabin vaccine in the packet of subsidized vaccines that it provided to poor countries under the auspices of the Expanded Program of Immunization (EPI).

What is the most effective vaccine ever? ›

Smallpox vaccination with vaccinia virus is the most famous example of a highly effective vaccine and at the time when people were faced with smallpox outbreaks, this vaccine was associated with each of these characteristics that led to the implementation of a successful vaccine.

What shot do you get every 10 years? ›

The CDC recommends that adults get a Tdap (tetanus, diphtheria, and pertussis) or Td (tetanus, diphtheria) booster shot every 10 years. Ask a health care provider when you need your booster shot.

What is the difference between Tdap and DTaP? ›

What is the difference between Tdap and DTaP? The Tdap and DTaP vaccines help protect against the same diseases but are used for different age groups. Tdap is recommended for older children and adults, and DTaP is recommended for infants and young children.

What is the name of the killed vaccine? ›

Inactivated (Killed) Vaccines

Examples of inactivated vaccines include: inactivated poliovirus (IPV) vaccine, whole cell pertussis (whooping cough) vaccine, rabies vaccine and the hepatitis A virus vaccine.

Which disease is not prevented by vaccination? ›

There is no vaccine available for osteoporosis. Osteoporosis is an age related problem in which bones becomes very weak due to which even due to sudden or slight jerk leads to bone fracture.

What is the 6 killer disease immunization? ›

The 6-in-1 vaccine is sometimes referred to as DTaP/Hib/HepB/IPV, which stands for 'Diphtheria, Tetanus, acellular Pertussis, Hib, Hepatitis B and Inactivated Polio Vaccine'. 'Acellular' means that the pertussis vaccine (the aP in DTaP) does not contain any whole pertussis bacteria.

What is the difference between a shot and an injection? ›

An injection (often and usually referred to as a "shot" in US English, a "jab" in UK English, or a "jag" in Scottish English and Scots) is the act of administering a liquid, especially a drug, into a person's body using a needle (usually a hypodermic needle) and a syringe.

What is the purpose of immunization? ›

Immunization is a global health and development success story, saving millions of lives every year. Vaccines reduce risks of getting a disease by working with your body's natural defences to build protection. When you get a vaccine, your immune system responds.

How long do immunizations last? ›

A few vaccines, like the two for measles or the series for hepatitis B, may make you immune for your entire life. Others, like tetanus, last for many years but require periodic shots (boosters) for continued protection against the disease.

Is smallpox vaccine the same as inoculation? ›

Smallpox vaccination is based on a thousand-year old technique called inoculation, in which a small sample of infected matter is deliberately introduced into the body in order to prevent the full disease from developing.

What is the process of vaccination? ›

Vaccines teach the immune system how to recognize and fight off specific disease-causing germs. They help protect you against disease without the risk of getting sick first. Vaccines contain killed, weakened, or synthetically manufactured versions of the disease-causing germ or parts of the germ called antigens.

What are the 4 types of injections? ›

The four most frequently used types of injection are:
  • Intravenous (IV) injections. An IV injection is the fastest way to inject a medication and involves using a syringe to inject a medication directly into a vein. ...
  • Intramuscular (IM) injections. ...
  • Subcutaneous (SC) injections. ...
  • Intradermal (ID) injections.
Apr 4, 2021

Why are immunizations important for children? ›

Vaccines can prevent common diseases that used to seriously harm or even kill infants, children, and adults. Without vaccines, your child is at risk of becoming seriously ill or even dying from childhood diseases such as measles and whooping cough.

Why do children get Immunised? ›

Immunisation prepares the body to fight serious infections that might happen in the future. Young babies are very vulnerable to infections, so they need to be protected as early as possible.

What are the disadvantages of immunisation? ›

Vaccines do have some risk for adverse reaction, the most common being redness and soreness at the injection site or fever and allergic reactions.

Do childhood vaccines wear off? ›

Protection from some childhood vaccines can wear off over time. You may also be at risk for vaccine-preventable disease due to your age, job, lifestyle, travel, or health conditions.

Does polio vaccine last for life? ›

It is not known how long people who received IPV will be protected against polio, but they are most likely protected for many years after a complete series of IPV.

What happens to unvaccinated kids? ›

Children who are not vaccinated can transmit vaccine- preventable diseases at schools and in the community. Unvaccinated children can infect babies who are too young to be fully immunized. Unvaccinated children can infect people of any age who can't be immunized for medical reasons.

Why don t we vaccinate for smallpox anymore? ›

After smallpox was eliminated from the world, routine vaccination against smallpox among the general public was stopped because it was no longer needed.

When did they stop giving the smallpox vaccine? ›

Routine smallpox vaccination among the American public stopped in 1972 after the disease was eradicated in the United States.


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