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Streptococcus bacteria may cause small infections like strep throat and some serious diseases like pneumonia. Certain streptococci may be fatal. Campylobacter is a group of bacteria that can create illnesses in humans and is a common cause of food poisoning.Harmful bacteria in food cause botulism, which can cause paralysis or even death if even one millionth of the bacterium is ingested. Yersinia pestis or Bubonic Plague, is a rod-shaped type of bacterium which is well known for its harmful nature. Bacteria-carrying fleas found on animals such as rats and mice transmit the bacteria that are believed to have caused the deaths of millions of people in human history

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16y ago

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