Transcript What is herd immunity?

Vaccinations...
• Make a list of all the
vaccinations you have
ever had! (If you can’t
remember make a list of
all the ones you’ve heard
of!)
Vaccinations
• Lesson Learning Outcomes:
Define the
term herd
immunity
Describe how
vaccines
work
Increasing Difficulty
Identify the
advantages
and
disadvantages
of vaccinations
How do Vaccines Work?
Listen Right
Left hand page
Draw a flow diagram OR a
cartoon to show how
vaccines work
Summary
Do this when notes are
completed to help process
the information
Vaccines
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Acquired Immunity
• Do you remember what this
means?
• Recall with your shoulder
partner (2mins)
Acquired Immunity
• Vaccinations also
enable acquired
immunity by exposing
the body to either live
or inactive/dead
pathogens
Acquired Immunity
• Vaccinations also
enable acquired
immunity by exposing
the body to either live
or inactive/dead
pathogens
Acquired Immunity
• Vaccinations also
enable acquired
immunity by exposing
the body to either live
or inactive/dead
pathogens
• This provides immunity
through the production
of memory cells
Acquired Immunity
• Vaccinations also
enable acquired
immunity by exposing
the body to either live
or inactive/dead
pathogens
• This provides immunity
through the production
of memory cells
How does the HPV
vaccine work?
 http://www.youtube.com/watch?v=jq346hkaEec
Left hand page
Summarise how the
HPV vaccine works in
four bullet points or less
Vaccines
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Vinnie the Vaccine
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HPV
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Herd Immunity
•This is when a very high percentage of
a group or community is vaccinated
against
a certain disease.
PASS THE BUCK!
X
Herd Immunity
•When there is herd immunity
High % vaccinated so disease will never
spread in communities
•Responsibility to protects people who are not
able to be vaccinated
•Responsibility to protect unborn babies
•Prevents people spreading disease when they
travel to other countries, where they have less
immunity e.g Africa
Herd Immunity
vaccinated
infected
not vaccinated
Herd Immunity
vaccinated
infected
not vaccinated
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What is herd immunity?
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Vaccines
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Vinnie the Vaccine
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HPV
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Herd Immunity
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Herd Immunity
• Herd immunity prevents:
• Epidemics
• Pandemics
What is the
difference between
a pandemic and
an epidemic?
Epidemic
Pandemic
• A widespread
outbreak of an
infectious disease in
a community at the
same particular time
• An widespread
outbreak of an
infectious disease over
a whole country or the
world, at the same
time
• Scientists believe
there may be a
measles epidemic in
the future
• Swine flu caused
world-wide panic and
it was feared would
reach pandemic status
Why does it matter?
Left hand page
Summary Time
- Prioritise the top
three reasons why
you should get
vaccinations if you
can
- Summarise the
arguments FOR and
AGAINST
vaccinations being
mandatory in the UK
before starting school
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Vaccines
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Vinnie the Vaccine
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HPV
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Herd Immunity
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Why is it important that a high
percentage of people are
vaccinated against the same
disease?
Why would the Government
wish to vaccinate as many
people as possible?
How can the Government
encourage people to be
vaccinated?
Why might some people not
want to be vaccinated?
Should vaccinations be
compulsory in the UK?
Why do you have to be
vaccinated for the flu every
year?
Why isn’t there a vaccination
for HIV?