Measles is most common in countries with lower vaccination coverage, such as several countries in Africa and Asia. The disease can easily spread in areas where there are pockets of unvaccinated individuals.
there are plenty to pick from, although Cholera is probably the most prevalent
Protestant denominations are groups of Protestant congregations such as the Lutherans, Charismatics and Adventists. These denominations are prevalent in North America, Africa and Australia.
AIDS
I very much doubt that there is anywhere where HIV is "popular" .. but it is most common in sub-Saharan Africa.
qwertyuiop for africa and back
South Africa and Australia
Africa to Australia
Africa to Australia
South Africa
Through the Columbian Exchange, the Europeans spread many diseases, namely smallpox and measles, to the Native Americans. The East Coast's native population nearly halved in fifty years!
Africa to Australia