- Measles cases spike globally due to gaps in vaccination coverage, according to the latest WHO report - Because of gaps in vaccination coverage, measles outbreaks occurred in all regions, and reported cases increased by more than 30 percent worldwide from 2016. http://www.who.int/news-room/detail/29-11-2018-measles-cases-spike-globally-due-to-gaps-in-vaccination-coverage 228 comments science