Economic evaluation of universal BCG vaccination of Japanese infants

M Rahman1, M Sekimoto, I Takamatsu

  • 1Department of General Medicine and Clinical Epidemiology, Kyoto University Graduate School of Medicine, Kyoto, Japan.

Insights

Universal BCG vaccination for infants in Japan is costly, with high expenses to prevent one tuberculosis case. The cost-effectiveness depends heavily on vaccine efficacy and protection duration.

Area of Science:

  • Public Health
  • Vaccinology
  • Health Economics

Background:

  • Investigates the international debate on Bacillus Calmette-Guérin (BCG) vaccine efficacy.
  • Addresses the low incidence of tuberculosis (TB) in Japanese children.

Purpose of the Study:

  • To conduct a cost-effectiveness analysis of universal BCG vaccination versus no vaccination in Japan.
  • To evaluate the economic impact of a BCG vaccination program for infants.

Main Methods:

  • A hypothetical cohort of 1.2 million infants born in Japan in 1996 was modeled.
  • Calculated TB cases prevented, immunizations needed, and costs using assumed vaccine efficacy (40-80%) and 10-year protection.
  • Performed sensitivity analyses on duration of protection, TB incidence, vaccine coverage, and discount rate.

Main Results:

  • Estimated 111-542 TB cases, including 10-27 TB-meningitis cases, prevented over 10 years.
  • Cost to prevent one TB case ranged from US$35,950-175,862, requiring 2125-10,399 immunizations.
  • Cost per TB case averted is sensitive to BCG protection duration and TB incidence.

Conclusions:

  • The cost per TB case prevented by BCG vaccination is high, influenced by vaccine efficacy and protection duration.
  • This cost is considerable when compared to the cost of treating an individual TB case.
Abstract

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