April 25 (UPI) -- As measles cases in the United States climb to the highest number in two decades, advocates said Thursday nearly 170 million children worldwide have
not been vaccinated against the disease.

The World Health Organization said the number of measles cases worldwide has reached a record high of 110,000, with the United States accounting for more than half of the cases.


"Measles is a highly contagious disease that can be prevented with a simple vaccine,"