CLEAN : Ukraine launches delayed polio vaccination drive

The video begins with casual greetings and interactions, followed by a detailed discussion on the national immunization efforts against polio in response to an outbreak in the Zakarpattia region. The outbreak was due to low immunization levels, and the response involves three rounds of immunization to boost community immunity.

What is the duration of the first round of immunization?

Why is it important to raise the level of immunity in communities according to the text?