Time to start remembering all the tips you learned from Monster movies!
Ok.. I suppose it might be a little bit early to break out the wooden stakes and chopping heads off people you think are Vampires… since.. according to this article they were Vampire Bats…but if the next report you hear out of Brazil sounds something like the trailer for Van Helsing or Dawn of the Dead… it might be good idea to sharpen a few sticks and keep them handy.