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Predictive value of immunization records and risk factors for immunization failure in internationally adopted

Emaculate Verla-Tebit1, Xiaobei Zhu, Eva Holsinger

  • 1Division of Global Child Health, Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106-7292, USA.

Archives of Pediatrics & Adolescent Medicine
|May 6, 2009
PubMed

Insights

Immunization records for international adoptees have limited predictive value for protective immunity. Parents should consider serologic testing and discuss vaccination or revaccination options with healthcare providers.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Public Health

Background:

  • International adoptees may have varying immunization histories.
  • Assessing protective immunity is crucial for public health.
  • Immunization records are often used to verify vaccination status.

Purpose of the Study:

  • To evaluate the accuracy of immunization records in predicting protective immunity in international adoptees.
  • To identify risk factors associated with vaccine failure in this population.

Main Methods:

  • A prospective cross-sectional study was conducted from 2001-2006.
  • Included 465 international adoptees within 180 days of arrival.
  • Assessed protective immunity for polio, hepatitis B, tetanus, diphtheria, and measles using available immunization records.

Main Results:

  • Protective immunity varied by vaccine type and birth country; for example, 58.3% had immunity to poliovirus type 1.
  • Adoptees from China were less likely to have protective immunity compared to those from Russia.
  • Nutritional status did not predict immunization success.

Conclusions:

  • Immunization records alone are insufficient to confirm protective immunity in international adoptees.
  • Significant variations in immunity exist based on country of origin.
  • Serologic testing is recommended to guide decisions on revaccination or initial vaccination.
Abstract

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