False about Pulse polio immunization is –
**Core Concept**
Pulse polio immunization is a mass vaccination campaign aimed at eradicating poliomyelitis by interrupting the transmission of wild poliovirus. This strategy involves administering oral poliovirus vaccine (OPV) to all children under 5 years of age in a specific geographic area.
**Why the Correct Answer is Right**
The correct answer is related to the strategy and implementation of pulse polio immunization. The primary goal of pulse polio immunization is to create a high level of immunity in the population, thereby breaking the chain of transmission of wild poliovirus. This is achieved by administering multiple doses of OPV in a short period, usually 1-2 days, to all children in the target age group. The strategy relies on the principle of herd immunity, where a sufficient proportion of the population is immunized to prevent the spread of the virus.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because pulse polio immunization is not a one-time event but a recurring campaign conducted at regular intervals to maintain high levels of immunity in the population.
**Option B:** Incorrect because the primary goal of pulse polio immunization is not to treat polio cases but to prevent new cases by interrupting the transmission of wild poliovirus.
**Option C:** Incorrect because the target population for pulse polio immunization is specifically children under 5 years of age, as they are the most susceptible to poliovirus infection.
**Clinical Pearl / High-Yield Fact**
To maintain high levels of immunity in the population, pulse polio immunization campaigns are typically conducted every 2-3 months in areas with high polio transmission.
**Correct Answer: D.**