What Is a Bacterial Infection?

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By james
Nov 7, 2020
Medical Expert Medical Expert

Keeping in good health can often be challenging. This world is chockful of all manner of threats and illnesses. And despite our best efforts, all of us will suffer some type of illness in our lifetime. Bacterial infections are highly common and most people will suffer several bouts during their lives. Their level of impact on our health can greatly vary.

One factor that can affect this impact is our immune response. Our bodies have their own mechanism that fights against illnesses. Often we can endure mild illnesses without the need for medication or other intervention as our bodies capably tackle the infection and restore normalcy. Bacterial infections often trigger our immune systems and should be carefully handled, especially when of a moderate to severe nature.

1. What is bacteria?

Bacteria are microscopic single-cell organisms that can exist in all manner of environments, including on and inside our bodies. There is a vast variety of bacteria in the world, with most being harmless, while a tiny minority can cause damage. Some of the beneficial bacteria include those that live in the human gut, aiding in digestion. Harmful bacteria like Escherichia coli, or E. coli, can cause gastrointestinal problems.

Their appearance can greatly vary. While most bacteria cells will have ridged walls with thin flexible membranes protecting the fluid inside, they do come in different shapes. The most common being circular, cylindrical and spiral. There are 10 times as many microbial cells as there are human cells in the body, with the majority residing in the gut where they can easily access nutrients.

Bacterial Infection

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