Medical Dictionary: Bug
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Bug: Another name for Microbes.
Bug (condition): General term for any tiny "bug" such as a virus, bacteria, fungi or protozoa.
Bug: Microbes are tiny organisms - too tiny to see without a microscope, yet they are abundant on Earth. They live everywhere - in air, soil, rock, and water. Some of them live happily in searing heat, and others in freezing cold. Like humans, some microbes need oxygen to live, but others cannot exist with it. These microscopic organisms are in plants, animals, and in the human body.
Some microbes cause disease in humans, plants, and
animals. Others are essential for a healthy life, and we could not exist
without them. Indeed, the relationship between microbes and humans is very
delicate and complex.1
More information on medical condition: Microbes:
1. excerpt from Microbes in Sickness and in Health - Publications, National Institute of Allergy and Infectious Diseases: NIAID
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