DWQA Questions › Category: Extraterrestrial Interlopers › Were the protozoa causing sleeping sickness and amoebic dysentery introduced into our world by extraterrestrials to cause harm? 0 Vote Up Vote Down Nicola Staff asked 7 years ago These pathogenic organisms are also extraterrestrial and an intentional scourge unleashed on humanity. Please login or Register to submit your answer Username or Email Address Password Remember Me