% of children aged 6-59 months who received two doses of vitamin A supplementation in the past 12 months

Numerator: Number of children aged 6-59 months who received two doses of vitamin A supplementation at least four months apart during the past 12 months

Denominator: Total estimated number of children aged 6-59 months in the target population/catchment for the same period

Divide the number of children 6-59 months recorded as receiving two vitamin A doses in the past year by the estimated target population of that age group and multiply by 100, validating administrative tallies against a coverage survey where feasible.

Formula: (Numerator ÷ Denominator) × 100

Supplementation campaign tally sheets and registers, health/nutrition facility records, and post-event coverage survey

Direction: Higher is better

Typical reporting frequency: Monthly or quarterly

Distinguish administrative (tally-based) coverage, which is prone to denominator error, from survey-measured coverage; count only children who reached the full two-dose annual schedule, as a single dose does not meet it. Disaggregate by age band (e.g. 6-11 vs 12-59 months) to reflect dosing schedule differences.