chain of infection

chain of infection
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  • Okay, I'll give you medicine.
  • It's like this.....
  • Through chain of infection.
  • What's that?
  • Doc, I have colds.
  • Doc, How did I get Colds?
  • Second link is Reservoir, where pathogens require for survival. Reservoirs can be Humans or animals. This can be broken down by medical treatment, quarantine etc.
  • It's a chain made up of 6 diff. links. The first link is PATHOGEN. The Disease-causing organism.
  •      Third link is the portal of exit.,where it is needed for the pathogen to leave the reservoir. If the reservoir is a human, then the portal of exit may be saliva,feces etc.
  • The fourth link is the means of transmission. The pathogencan be transmitted either directly or indirectly.
  • The link can be broken through hand washing, safe sex practices, or avoiding contact with infected individuals.
  • Fifth link is the portal of entry. 
  • The final link is the new host
  • Entry of the pathogen can take place in one of three ways: penetration,inhalation, or ingestion.
  • Yep.
  • Ahh. So that's how I got Colds.
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