Infectious disease remains a national and global security threat. With the ease in which people can travel around the world, we should expect other exotic diseases to arrive in America. Ebola, Lassa, and Zika have already done so, and yet-to-be-identified microbes are also likely to be imported.
global public health
Every year, 5.6 million children under the age of 5 die. That's roughly the same size as the entire Atlanta metropolitan area. Imagine a city that size filled only with children aged 4 and younger. Now, imagine that city being wiped off the map. Every year. That's the scope of the problem that global poverty presents.