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Related Experiment Videos

Interchangeability of vaccines.

S Feldman1

  • 1Department of Pediatrics, University of Mississippi Medical Center, Jackson, MS 39216, USA. sfeld2222@aol.com

The Pediatric Infectious Disease Journal
|November 13, 2001
PubMed
Summary

Childhood vaccine interchangeability is crucial for completing immunization schedules. While some vaccines like DTPa have specific recommendations, others like hepatitis B, poliovirus, and Hib show sustained immunogenicity across manufacturers.

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Area of Science:

  • Immunology
  • Vaccinology
  • Public Health

Background:

  • Childhood immunization schedules are complex, involving multiple injections over extended periods.
  • Vaccine interchangeability is vital when prior products are unknown or unavailable.

Purpose of the Study:

  • To review vaccine literature and determine consensus on the interchangeability of current vaccines.
  • To assess the feasibility of using different vaccine products within a single immunization series.

Main Methods:

  • Comprehensive review of existing vaccine literature.
  • Analysis of data regarding vaccine efficacy and immunogenicity.
  • Identification of expert recommendations on vaccine interchangeability.

Main Results:

  • Diphtheria-tetanus toxoids-acellular pertussis (DTPa) interchangeability is challenging due to lack of pertussis efficacy markers; same product recommended for first three doses, but alternatives are permissible if needed.
  • Recent data suggest some DTPa products are immunogenically similar and interchangeable.
  • Hepatitis B, poliovirus, and Haemophilus influenzae type b vaccines demonstrate sustained immunogenicity when series are completed with different manufacturers' products.

Conclusions:

  • Combination vaccines are recommended to reduce injection frequency, potentially lowering costs and improving healthcare efficiency.
  • Expert bodies advocate for combination products to streamline immunization programs and enhance record-keeping.

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