Immunization coverage is the percentage of eligible fully-immunized infants compared to the total number of surviving infants in the target population. The immunization coverage rate is measured by comparing the number of doses actually given and the number in the target population of surviving infants under one year of age (these are the eligible infants). The result is expressed as a percentage. The equation below shows you how to calculate immunization coverage rate in your kebele.

Immunization coverage rate (for a particular vaccine) =

number receiving all doses ÷ number in the target population x 100%, where:

• number receiving all doses is the number of surviving infants under one year of age receiving all the required doses during the previous 12 months for the selected vaccine.
• target population is the total number of eligible infants under one year of age (or total number of surviving infants) at the start of that reporting period.

If the number of fully immunized infants appears to be greater than the number in the target population, this indicates that some of the recorded information must be incorrect. The reason for this problem should be identified.