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Share of neonates protected at birth against neonatal tetanus [1]

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Date: 2025-05

Rationale

Immunization is an essential component for reducing under-five mortality. Immunization coverage estimates are used to monitor coverage of immunization services and to guide disease eradication and elimination efforts. It is a good indicator of health system performance.

Definition

The proportion of neonates in a given year that can be considered as having been protected against tetanus as a result of maternal immunization.

Method of estimation

PAB coverage is estimated using a mathematical model. PAB is the proportion of births in a given year that can be considered as having been protected against tetanus as a result of maternal immunization. In this model, annual cohorts of women are followed from infancy through their life. A proportion receive DTP in infancy (estimated based on the WHO-UNICEF estimates of DTP3 coverage). In addition some of these women also receive TT through routine services when they are pregnant and may also receive TT during Supplementary Immunization activities (SIAs) . The model also adjusts reported data, taking into account coverage patterns in other years, and/or results available through surveys. The duration of protection is then calculated, based on WHO estimates of the duration of protection by doses ever received. A further description of the model can be found in: Griffiths U., Wolfson L., Quddus A.,Younus M., Hafiz R.. Incremental cost-effectiveness of supplementary immunization activities to prevent neo-natal tetanus in Pakistan. Bulletin of the World Health Organization 2004; 82:643-651 Predominant type of statistics: predicted

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[1] Url: https://ourworldindata.org/grapher/the-percentage-of-neonates-protected-at-birth-against-neonatal-tetanus

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