Estimation of percentage of children immunized in community as per WHO is to be done by:
**Core Concept**
The World Health Organization (WHO) recommends various methods for estimating the immunization coverage in children within a community. This involves assessing the percentage of children who have received the required vaccinations, typically measured through surveys or administrative records.
**Why the Correct Answer is Right**
The correct method for estimating the percentage of children immunized in a community as per WHO is the Expanded Program on Immunization (EPI) method. This method involves collecting data on the number of children who have received each vaccine dose and then calculating the percentage of children who have completed the full vaccination schedule. The EPI method is widely used due to its simplicity, low cost, and effectiveness in estimating immunization coverage.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a recognized method for estimating immunization coverage.
**Option B:** This option is incorrect because it is not a valid method for estimating immunization coverage as per WHO guidelines.
**Option C:** This option is incorrect because it is not a specific method for estimating immunization coverage, and the term "surveillance" is too broad.
**Clinical Pearl / High-Yield Fact**
A key aspect of the EPI method is the use of administrative records, such as vaccination cards or immunization registers, to collect data on vaccination coverage. This method is particularly useful in areas where survey data may be limited or unreliable.
**Correct Answer: D. EPI method. EPI method is widely used due to its simplicity, low cost, and effectiveness in estimating immunization coverage.**