8L12 Disease Outbreak A disease outbreak happens when a disease occurs in greater numbers than expected in a community or region or during a season An outbreak may occur in one community or even extend to several countries It can last days or years ID: 552557
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Slide1
Epidemic Vs Pandemic
8.L.1.2Slide2
Disease Outbreak
A disease outbreak happens when a disease occurs in greater numbers than expected in a community or region, or during a season.
An outbreak may occur in one community or even extend to several countries. It can last days or years.
Sometimes, a single case of a contagious disease is considered an outbreak. This may be true if it is an unknown disease, is new to a community, or has been absent from a population for a long time.
An outbreak is classified as either an epidemic or pandemic. Slide3
Epidemic and Pandemic:
What do they refer to?
The terms epidemic and pandemic usually refer to:
The rate of infection
and/or
The area that is infectedSlide4
Epidemic
An epidemic is defined as an illness or health-related issue that is showing up in more cases than would normally be expected. It occurs when an infectious disease spreads rapidly to many people.
Ex: In 2003, the severe acute respiratory syndrome (SARS) epidemic took the lives of nearly 800 people worldwide. Slide5
Pandemic
The term pandemic normally is used to indicate a far higher number of people affected than an epidemic.
Pandemic also refers to a much larger region being affected.
In the most extreme cases, the entire global population would be affected by a pandemic. Slide6
Pandemics affect more of the population than an epidemic.
A pandemic is typically in a widespread area (
u
sually worldwide) rather than being confined to a particular location or region.
Pandemics tend to affect the global population.
A pandemic does not necessarily mean millions of deaths- it means a geographically widespread epidemic
. Slide7
Influenza Pandemics have occurred more than once
An influenza pandemic occurs when a new subtype of virus arises.
This means humans have little or no immunity so everyone is at risk.
The virus spreads easily from person to person causing a serious illness worldwide.
Virus have the capability to spread worldwide very quickly due to the speed of air travel. Slide8
Past Influenza Pandemics
Spanish Influenza:
1918
40-50 million dead
Asian Influenza:
1957
2
million people dead
Hong Kong Influenza
:
1968
1
million dead