Cost-effectiveness of pneumococcal conjugate vaccines of 7, 10, and 13 valences in Colombian children

Carlos Castañeda-Orjuela, Nelson Alvis-Guzmán, Martha Velandia-González, Fernando De la Hoz-Restrepo
Vaccine 2012 March 2, 30 (11): 1936-43

BACKGROUND: Currently there are three pneumococcal conjugate vaccines with different coverage of serotypes for use in children under one year. We evaluate the cost-effectiveness of the introduction of pneumococcal conjugate vaccines of 7, 10, and 13 valences in the Colombian EPI.

METHODS: A Markov model, which followed a cohort of children under one year to life expectancy, was developed. Parameters of occurrence and care costs were based on data from National Health System and literature review. PCV-7 is a dominated strategy. PCV-10 and PCV-13 were each compared to no vaccination or PCV-10 vaccination, respectively. A 2+1 schedule and a vaccination price of US$ 14.00, US$ 14.85 and US$ 16.34 per dose were assumed in the base case for PCV-7, -10, and PCV-13 vaccines.

RESULTS: Introduction of PCV-13 rather than PCV-10 increases the number of life years gained (LYG). From the societal perspective, in the 'competing choice' framework cost per LYG was US$ 1837 with PCV-10 and US$ 9514 with PCV-13, while PCV-7 is a dominated strategy. The ICER of PCV-13 is above the per capita Gross Domestic Product. Incremental cost-effectiveness ratios (ICERs) were influenced mainly by effectiveness against radiologically-confirmed pneumonia and AOM, vaccine price, and discount rate.

CONCLUSION: Routine vaccination against Streptococcus pneumoniae in Colombia would be cost-effective with PCV-10, with ICER below the per-capita GDP, but its inclusion requires evaluating the budget impact. PCV-13 would prevent more disease and deaths with a higher LYG, but PCV-10 would save more cost to the healthcare system due its higher impact in the prevention of AOM. There is limitation in the clinical evidence of both strategies.

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