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GP Topicschild-and-youth-health

GP · child-and-youth-health

Childhood immunisation schedules and hesitancy

Also known as Vaccination schedule · NIP · Child immunisations · Vaccine hesitancy

GP-fellowship guide to childhood immunisation: the Australian NIP structure from birth hepatitis B through 2/4/6-month hexavalents to the 4-year booster, live vaccine timing rules including MMR at 12 months and post-immunoglobulin intervals, true versus false contraindications with egg-allergy MMR safety evidence, answering the MMR-autism myth with Taylor, Demicheli and Hviid data and refuting immune overload, cold-chain and IM-site administration by age, catch-up principles, preterm and Aboriginal special-group rules, febrile-seizure counselling numbers, No Jab No Pay evidence, and AIR record-keeping.

high10 referencesUpdated 21 Aug 20267 min readVerification in progress

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RACGP AKTRACGP KFPRACGP CCE

Red flags

  • Anaphylaxis to a previous vaccine dose is a TRUE contraindication — everything else (mild illness, runny nose, family history of autism, egg allergy) is not
  • Rotavirus has strict first-dose and last-dose age limits — a late presentation may miss the window entirely; check before booking catch-up
  • Never delay a scheduled vaccine for a runny nose — deferral visits are how coverage dies one child at a time
  • Infants of HBsAg-positive mothers need hepatitis B immunoglobulin AND vaccine within 24 hours of birth — missing this is an avoidable chronic infection
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Target exams

RACGP AKTRACGP KFPRACGP CCE

Red flags

  • Anaphylaxis to a previous vaccine dose is a TRUE contraindication — everything else (mild illness, runny nose, family history of autism, egg allergy) is not
  • Rotavirus has strict first-dose and last-dose age limits — a late presentation may miss the window entirely; check before booking catch-up
  • Never delay a scheduled vaccine for a runny nose — deferral visits are how coverage dies one child at a time
  • Infants of HBsAg-positive mothers need hepatitis B immunoglobulin AND vaccine within 24 hours of birth — missing this is an avoidable chronic infection
Key points
  • The Australian NIP gives hepatitis B at birth, hexavalent DTaP-IPV-HepB-Hib with pneumococcal and rotavirus at 2/4/6 months, MMR plus Hib/MenC at 12 months, an 18-month MMR-varicella and DTaP booster round, and a 4-year DTPa-IPV booster.
  • Mild illness is NOT a contraindication; true contraindications are few — anaphylaxis to a previous dose or its components. MMR is safe in egg allergy: all 54 egg-allergic children in landmark trials were vaccinated without reaction.[7]
  • The MMR-autism myth is dead on the data: the Danish nationwide cohort followed 6517 children diagnosed with autism across 5 million person-years and found a hazard ratio of 0.93 (95% CI 0.85–1.02) for MMR versus no MMR — no increased risk in any subgroup.[1]
  • "Too many too soon" fails on antigen arithmetic: increasing cumulative vaccine antigen exposure through the first two years of life showed NO association with autism risk (aOR ~1.00 per 25-unit increase).[5]

Overview

Childhood immunisation is general practice's highest-volume preventive intervention and its most common site of parental doubt. The Australian NIP is a timed architecture — birth, 2/4/6 months, 12 months, 18 months, 4 years — engineered around maternal antibody waning, live-virus rules, and combination vaccines that deliver six antigens in one needle. The GP's job is threefold: give the right vaccine at the right time, answer hesitancy with data instead of dismissal, and keep the record straight in AIR.[10]

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References10ShowHide
  1. [1]Hviid A, Hansen JV, Frisch M, et al. Measles, Mumps, Rubella Vaccination and Autism: A Nationwide Cohort Study Ann Intern Med, 2019.PMID 30831578
  2. [2]Madsen KM, Hviid A, Vestergaard M, et al. A population-based study of measles, mumps, and rubella vaccination and autism N Engl J Med, 2002.PMID 12421889
  3. [3]Farrington CP, Miller E, Taylor B MMR and autism: further evidence against a causal association Vaccine, 2001.PMID 11395196
  4. [4]Di Pietrantonj C, Rivetti A, Marchione P, et al. Vaccines for measles, mumps, rubella, and varicella in children Cochrane Database Syst Rev, 2020.PMID 32309885
  5. [5]DeStefano F, Price CS, Weintraub ES Increasing exposure to antibody-stimulating proteins and polysaccharides in vaccines is not associated with risk of autism J Pediatr, 2013.PMID 23545349
  6. [6]Sun Y, Christensen J, Hviid A, et al. Risk of febrile seizures and epilepsy after vaccination with diphtheria, tetanus, acellular pertussis, inactivated poliovirus, and Haemophilus influenzae type B JAMA, 2012.PMID 22357833
  7. [7]James JM, Burks AW, Roberson PK, et al. Safe administration of the measles vaccine to children allergic to eggs N Engl J Med, 1995.PMID 7708070
  8. [8]Beard F, Hendry AJ, Gidding HF, et al. Impact of Australia's No Jab, No Pay policy on vaccination uptake - a before-after study in two national birth cohorts Lancet Reg Health West Pac, 2025.PMID 39720421
  9. [9]Hillan A, Pung L, Ridderhof S, et al. Public health audit of vaccine cold chain management in general practice and community pharmacy in Western Australia Aust N Z J Public Health, 2024.PMID 39003884
  10. [10]Levi BH Addressing parents' concerns about childhood immunizations: a tutorial for primary care providers Pediatrics, 2007.PMID 17606557

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