1. Is a virus alive?

2. Most Common Virus? The Common cold
200 different viruses that make up the common cold
Affects upper respiratory tract (nose, sinuses)
Typically 7-10 days between start and finish
No cure exists but symptoms are treatable
Spanish flu was the most deadly strain and it killed 20 million people in US and Europe and 17 million in India
How many deaths per year from colds?
36,000 die of flu related complications

3. How do viruses spread?
A good virus occupies the host just long enough that the host spreads it around it’s environment and into other hosts.
Enters through nose, mouth or breaks in skin
Progression of symptoms:

4. Interesting Fact # 1
Some parasitic wasps lay eggs in caterpillars, where they mature into adult wasps. The wasp eggs contain a virus, encoded in the wasp genome, which prevents the caterpillar from rejecting the eggs.

5. 13 Most Deadly Viruses How many can you name?

6. Common Viruses Ebola Causes the Ebola hemorraghic fever
50-90% of infected die
Symptoms: fever, throat and muscle pains, headaches. Then nausea, vomitting, diarrhea and decrease function of liver and kidney, hemorrhaging out of eyes and mouth
Spread through contact with bodily fluids of an infected animals (monkeys, fruit bats, gorillas, etc)

7. How does Ebola work? https://www.youtube.com/watch?v=J6WI0AbB3lk

8. Your task:
Research viruses and how the 8 different criteria for being “alive” applies to them.
Write a paragraph which communicates your opinion on whether viruses are alive
In this paragraph, specific details about all 8 criteria for being considered alive must be present

9. Measles
Using the following 2 websites answer the questions on the following slides:

10. Measles questions
4. Is the measles a bacteria or a virus? Draw a sketch. 5. Can the measles be treated with antibiotics? Why or why not? 6. What body cells, tissues and systems do the measles affect? 7. How do they spread from person to person? 8. What treatments do the CDC propose? 9. What did you find the most interesting about looking into the measles?