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Polio immunization policy in Mexico: economic assessment of current practice and future alternatives.

Mascareñas A, Salinas J, Tasset-Tisseau A, Mascareñas C, Khan MM

Mexican Vaccinology Association, Monterrey, Mexico.

The World Health Organization recommends that all children aged less than 5 years should be vaccinated against polio through intensive immunization programmes as well as routine immunization. A national immunization week (NIW) was held in February 2002 in the Monterrey district of Mexico. A prospective micro-costing study was conducted to measure the total cost to the state of the NIW, the cost profile, and the ratio of cost per immunization contact to cost per dose of oral polio vaccine (OPV), and to compare OPV and inactive polio vaccine (IPV) in economic terms. Two scenarios were used as the basis for calculation. The cost of volunteers was excluded from the "lower-cost scenario" and included in the "upper-cost scenario". The total cost of the NIW was USD 100,454 for the lower-cost scenario and USD 156,614 for the upper-cost scenario. The major part of the costs was personnel costs (67.30 and 77.53% of the total costs in the lower- and upper-cost scenario, respectively). The ratio of cost per immunization contact to cost per dose of OPV was 6.45 for the lower-cost scenario and 10.05 for the upper-cost scenario. Changing from the current OPV-based intensive and routine schedule to a sequential IPV-OPV routine schedule would save USD 14.52 per vaccinated child, and changing to a full IPV routine schedule would save USD 9.41 per vaccinated child.

Published 13 April 2005 in Public Health, 119(6): 542-9.
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