Presentation on theme: "EPIDEMIC"— Presentation transcript
Slide1
EPIDEMIC
X-CHEM HEALTH SCIENCE CAMP 2013Slide2
How This Will Work:
In the next couple of slides I have a bunch of questions for you!
When I ask a question, raise your hand and I will throw you a ball
You can only answer the question when you are holding the ball!Slide3
What is an Epidemic?
An epidemic is when a disease is spread through a large populationSlide4
What Causes a Disease?
There are 2 main causes of diease
:
1. Viruses
2. BacteriaSlide5
What is a Virus?
Microscopic organismsThey are not alive
They land on the outside of a cell and inject their DNA into the cell
The DNA mixes with the DNA already in the cell and starts to create lots more viruses
The new viruses burst out of the cell and find new cells to attackSlide6Slide7
What is Bacteria?
Bacteria are actually alive!!Much more complicated than viruses
Easier to treat when you get sick
Bacteria are treated with antibiotics (penicillin is a common one) but viruses are much harder to treatSlide8
Bacteria
There are 3 main shapes of bacteria:Cocci
(ball-shaped)
Bacilli (rod-shaped)
Spirlilla
(spiral shaped)Slide9
How can diseases spread?
Coughing
Blood
Eating/drinking from
someones
food/cup
From human to human
From animal to human (sometimes)Slide10
The Biggest Epidemic
The influenza epidemic (the flu)Have you ever had the flu? I have
The flu used to be extremely deadly
More people died from the Spanish flu than in World War 1
The flu is a viral epidemic, it can mutate and cause new diseases (this is why you get a flu shot every year; the flu changes strains)Slide11
Mutation
Mutations are not always a bad thing!A mutation is when DNA changes, almost by mistake, and results in a new abilitySlide12
Do you remember the Swine Flu?
It didn’t reach epidemic levels, but a lot of people got sick
It was a specific strand of fly that effect pigs then it mutated to effect humansSlide13
The Plague
Huge bacterial epidemic Also called “Black Death”
Effected people especially in their middle ages
It is not deadly anymore due to antibiotics
It was known as a pandemic, meaning that it spread across continents or even worldwideSlide14
Spreading Disease
What if one of the leaders was sick with a contagious disease and touched the ball that you all just touched?
You would all have the sickness on your hands!
Using a UV light we will be able to see this all over your handsSlide15
Preventing Sickness
Washing your hands well is one of the best ways to protect yourselves against disease
Covering your mouth when you cough & sneeze
Staying home when your sick
Washing your clothes & sheets often
Wearing a mask!Slide16
Designing a Mask
Let’s desgin masks to wear to protect ourselves from sickness
Materials:
Construction paper
Staples
Tape
Scissors
elastics
