Originally posted by: Jeff7
Originally posted by: Sahakiel
Originally posted by: Queasy
OK in War of the Worlds, common bacteria and viruses killed the aliens. However, wouldn't the aliens have brought some bacteria and viruses along with them as well that humans would not be immune to?
You're assuming both physiologies are compatible.
Apparently compatible enough to allow Earthly bacteria to kill
them.
Maybe they discovered ways long ago to eradicate all bacteria from their bodies and environment. Genetic manipulation may have allowed for the production of the proper digestive substances, or maybe there's some subdermal implant which releases specific chemicals (and thus energy) directly into their bloodstreams.
Or, maybe the producers didn't want to make a totally dismal sequel: "Death of the World," in which all life on Earth begins to die out as a myriad of alien microbes begin to take over.