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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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