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So tell me doc, what is a pathogen?
A pathogen is a bacterium or microorganism that can cause disease. For example, bacteria, viruses and fungi are all pathogens.
Bacteria can be spread in 4 different ways: First by kissing someone Second by touching someone
Or, you can spread disease by Sneezing in a public area Or coughing in a public area
Ok, but how do I protect myself from these diseases?
To protect yourself; wash your hands to get rid of bacteria you picked up, keep up to date with all your shots, and avoid touching your eyes, nose and face.
But what does my immune system do?
Your immune system maintains homeostasis by preventing pathogens from disrupting the body's normal functioning.
Man, the immune system must be huge!
Yep! For example, in the first line of defense your tears wash out pathogens, this is called a mechanical mechanism. An example of a chemical mechanism in the first line of defense is sweat which contain enzymes that kill pathogens.
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