How Bacteria Make Us Sick

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How Bacteria Make Us Sick
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Exposure

• A bacterial cell has to first enter our body,
  this can happen through

Ingestion
A break in the skin (Cut or wound)
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Inside Our Body

• Warm (37 C)
• Moist
• Lots of food! (sugars)
• This makes our insides the ideal breeding ground
  for bacteria

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Once inside

• The bacteria begin to reproduceVery Quickly!

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How Bacteria Cause Illness

• 1. They can produce Enzymes
• Ex Helicobacter pylori produces an enzyme that
  neutralizes stomach acidsunfortunately it also
  destroys the lining of the intestinal wall

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Flesh Eating Disease

•  The medical name for this disease is necrotizing
  fasciitis (NF) and it is caused by a bacterium
  called Streptococcus pyogenes,

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2. Some produce toxins (poisons) that kill cells.
Clostridium botulinum bacteria produce botulinum
toxin, the most powerful toxin known to
humankind. They cause the disease called
botulism
Exotoxins are poisons released by live bacteria.
Endotoxins are poisons released when the
bacteria die.
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3. Body Become Overwhelmed

• Too many bacteria interrupt normal bodily
  functioning