Measles has come back with a vengeance in the last several years
The nearly 870,000 reported cases in 2019 were largely due to outbreaks in nine countries
![child in Samoa getting measles vaccine](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/11/111320_ac_measles_feat.jpg?fit=1030%2C580&ssl=1)
A child in Samoa receives a measles vaccine in December of 2019. A big measles outbreak in the country contributed to the nearly 870,000 reported cases worldwide in 2019, the most in 23 years.
Allan Stephen/UNICEF