This may be the tin foil on my head but I believe it's airborne and they don't want to cause a panic by telling anyone.
http://healthmap.org/site/diseasedai...irborne-112112
And looks like he was wearing the crappy hazmat compared to the nicer one his helper was wearing out of the amberlamps. Like, why not get the guy the same nice suit? You already spent how much getting him there, just do it