I was under the impression that you were talking about fields in CA (or in some part of the US, anyway). The chance that someone from Africa would be able to migrate out of Africa and all the way across the country of Mexico within the 21 day incubation period of Ebola is just about nil. A few weeks ago, Rush said that it takes about 45 days to traverse to our border... no one with Ebola can survive that long.
I am also quite aware that the coyotes have no use for those who cannot keep up with the others during those trips across our border. People don't even have to be sick--if they are just small and weak, the coyotes will abandon them. From everything I've heard, a LOT of bodies are recovered near those border areas.
While there are plenty of noxious diseases that can cross our southern border, Ebola isn't one of them.
The person that leaves Africa infected with Ebola will not infect anyone else before they die? Why the idea that one person has to bring Ebola from Africa all the way to the US? I was under the impression that Ebola spreads person to person. Ever watch a relay race?
Working a harvest is VERY hot and thirsty work.
All it needs are a few transfers, or connecting flights. It doesn't have to arrive in the same person it left in.