Where was polio prevalent?

Polio was prevalent in many parts of the world, but it was particularly widespread in developing countries where sanitation and hygiene were poor. Some of the countries most affected by polio included:

* India

* Pakistan

* Bangladesh

* Afghanistan

* Nigeria

* Ethiopia

* Somalia

* Kenya

* Tanzania

* Uganda

These countries had a high incidence of polio cases due to a combination of factors, including:

* Lack of access to clean water and sanitation

* Poor hygiene practices

* Overcrowded living conditions

* Low vaccination rates

Polio has now been eradicated from most countries in the world, thanks to the widespread use of the polio vaccine.