Bacterial infections

Bacteria are single-celled microorganisms, also known as prokaryotes.

Experts estimate that there are at least 1 nonillion bacteria on Earth. A nonillion is a 1 followed by 30 zeros. Much of the Earth’s biomass comprises bacteria.

Bacteria take three main shapes:

  • Spherical: These are known as cocci.
  • Rod-shaped: These have the name bacilli.
  • Spiral: Coiled bacteria are known as spirilla. If the coil of a spirillum is particularly tight, scientists call it a spirochete.

Bacteria can live in almost any type of environment, from extreme heat to intense cold, and some can even survive in radioactive waste.

There are trillions of strains of bacteria, and few cause diseases in humans. Some of them live inside the human body, such as in the gut or airways, without causing harm.

Some “good” bacteria attack “bad” bacteria and prevent them from causing sickness. However, some bacterial diseases can be deadly.

  • Cholera
  • Diphtheria
  • Dysentery
  • Bubonic plague
  • Tuberculosis
  • Typhoid
  • Typhus

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3rd World Congress on Advancements in Tuberculosis and Lung Diseases

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