Measles
 

Most people don't take them seriously, but they are.

Perhaps the numbers are accurate worldwide. But they are most certainly not accurate for the U.S., by several orders of magnitude:

https://www.cdc.gov/measles/about/history.html

Think global, act local.

Despite Trump's best efforts, foreigners will continue to visit, so eliminating Measles in the US can't really be declared complete unless it's eliminated from the world.

I heard something on the radio re measles, in the middle of the night.
I was only half awake but I think it was this report:

Full report here: BBC Link

I'm always surprised as to how seriously the infection is taken now.
As a child it was just something that you ticked off a list of childhood infections like chicken pox. In some senses a rite of passage.
And you could always be sure of a week off school. :)
Unless, like me, you caught it in the summer holidays.