Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Herd Immunity A Guide to Epidemic Prevention

Word Count Emoji
382 words
Reading Time Emoji
2 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

What is Herd Immunity? 🐄

  • Think of a herd of cows. If most of them are protected against a wolf (thanks to a superhero cape or something), then the whole herd is generally safe even if a few don't have capes.
  • In human terms, herd immunity is when many in a population are immune to a disease (either because they had it before or got vaccinated), making it hard for the illness to spread.
  • Picture this: The virus is trying to play 'tag', but keeps finding people it can't tag because they're "it" already!

Does EVERYONE Need to be Immune? 🤔

  • Surprise! No.
  • Not every single person needs to be immune for herd immunity to kick in.
  • Because of this, some smart people (epidemiologists) prefer calling it "herd protection".

Why is Herd Immunity Super Cool? 😎

  • Protects the vulnerable: Some can't get vaccines due to weak immune systems. With herd immunity, they're less likely to get sick.
  • Imagine you're allergic to rain and can't use an umbrella (bummer!). But if most people around you have BIG umbrellas, you'll stay dry even when it pours!

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IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Herd Immunity A Guide to Epidemic Prevention

Word Count Emoji
382 words
Reading Time Emoji
2 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

What is Herd Immunity? 🐄

  • Think of a herd of cows. If most of them are protected against a wolf (thanks to a superhero cape or something), then the whole herd is generally safe even if a few don't have capes.
  • In human terms, herd immunity is when many in a population are immune to a disease (either because they had it before or got vaccinated), making it hard for the illness to spread.
  • Picture this: The virus is trying to play 'tag', but keeps finding people it can't tag because they're "it" already!

Does EVERYONE Need to be Immune? 🤔

  • Surprise! No.
  • Not every single person needs to be immune for herd immunity to kick in.
  • Because of this, some smart people (epidemiologists) prefer calling it "herd protection".

Why is Herd Immunity Super Cool? 😎

  • Protects the vulnerable: Some can't get vaccines due to weak immune systems. With herd immunity, they're less likely to get sick.
  • Imagine you're allergic to rain and can't use an umbrella (bummer!). But if most people around you have BIG umbrellas, you'll stay dry even when it pours!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟