History -- Mega Disasters: Alien Infection

Could an ALIEN INFECTION cause an epidemic on earth? Some scientists believe it already has with the Influenza of 1918, which killed between fifty and one hundred million people. Next time, experts say, the devastation could be far worse! In this episode of MEGA DISASTERS, see how microbes from extraterrestrial sources - hitch-hikers on Mars spacecraft, comet dust - could infiltrate our atmosphere and decimate the population. Without any natural immunities, without any hope of quarantine, deaths could be in the billions and worldwide panic would ensue.

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