Bacteria are ubiquitous, present in the soil, air and water around you. Some bacteria can be beneficial, while other bacteria causes illness and even death. Pathogenic bacteria, those organisms that cause disease, relentlessly bombard your body daily. Your body's immune system fights off most of these invaders. Some types of bacteria cause more harm to humans than others, overwhelming your body's defenses and frequently causing death in terrifying ways and at alarming speeds.
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