Illegal Aliens bring in nifty new deadly diseases...

http://www.wnd.com/2014/10/mystery-virus-found-where-illegal-alien-kids-sent/

Enterovirus D68 has killed five U.S. children and infected hundreds more in the past month and a half, doctors confirm, and some believe there may be a connection between the sudden outbreak and the throngs of unaccompanied, illegal-alien children now being housed across the country.

A 2013 study published in Virology Journal found EV-D68 in a small proportion of young people with flu-like symptoms in eight Latin American countries.

Conjecture.

That's what the American Indians said about the Europeans.