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Utility of Lot Quality Assurance Sampling (LQAS) as a Tool to Monitor the Immunization Services by Local Managers in Developing Countries
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Purpose: To find out how Lot Quality Assurance Sampling (LQAS) method is useful to monitor immunization services by local managers at Primary Health Centre level.
Objectives:
1. To identify the areas of low coverage of immunization under selected PHC's
2. To find various reasons for immunization failure in areas with low coverage
Methods: Study design: Lot quality assurance sampling method.
Study setting: Rural area.
Sample size: 338 children 12-23 months of age.
Results: LQAS is a useful method for routine monitoring of immunization services on a small area basis, especially as the overall coverage increases. In the present study, it helped us to identify the areas with low coverage seen in 4 Subcentres out of 13 studied. The overall immunization coverage was 86.01 % and the dropout rate was 8.66 %.The predominant reasons for immunization failure were mother out of village on scheduled day of vaccination and unaware to return for next dose.
Conclusions: The lot quality assurance sampling method helps the medical officers of PHC to identify areas with low vaccination coverage. This helps us to direct interventions in these areas on priority basis when resources are limited as in developing countries.
Keywords
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