3/8 - 7th Grade AgendaCollect HW: Reading & Notetaking p. 157 – 159Chap 8 Test for absent studentsViruses & BacteriasTextbook Reading 326 – 333HW: Reading & Notetaking 160 & 161 6 Points Extra Credit: Bring a signed grade printout from home due 3/10 & 3/11Last day to take back your poster is on 3/12. Any poster not taken back will be recycled.

What causes colds, flu, smallpox, AIDS?

• Viruses

Cold VirusAIDS Virus

Flu Virus

Is a virus alive?• No• Scientists does not

consider viruses alive because it can not reproduce by it self

• It must multiply in another cell

Virus• Virus contains single strand of DNA and

protein coat protecting it.

Virus• Once inside a cell a

virus’s gen_____ material takes over many of the cell’s functions.

• It instruct the ce___ to produce the virus’s proteins and genetic material.

etic

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How Virus Spreads

Herpes Virus• 80% of Adult Population has Oral Herpes• 60% of Older Teenagers has Oral Herpes• 25% of Adult Population has Genital

Herpes• 80% of people infected with Herpes Virus

is not aware that they have it

How is Herpes Spread?• Skin to Skin contact with person with an active

Herpes (i.e. Cold sore)• Kissing some body with active Herpes• Sharing food or utensils with infected person• Sharing towels with infected person• There is no Herpes Vaccine• Once you get Herpes you will have it forever

Symptoms of Herpes• Oral Herpes:

– Itchy around the sores– Pain around the gum and mouth– Last about 14 days and it will return

• Genital Herpes: – Itchy around the sores– Painful while urinating– May last weeks or months and it will return

Over 80 million men, women and children are infected with HIV

• Epidemic: The rapid spread of a disease so that many have it at one time

• Endemic: Common to a population• Pandemic: Spreading over the entire continent

or the whole worldSo Is AIDS an Epidemic, Endemic or a

Pandemic?Its an Epidemic, Endemic and a Pandemic

About 1 out of 100 Americans have AIDS

About 1 out of 8 U. S. cases of AIDS are in California

Over 100,000 AIDS Cases in California

Through which bodily fluids is AIDS transmitted?

• Blood• Semen• Vaginal Fluids• Breast Milk

Through what part of the body is AIDS transmitted?

• Mouth• Openings in

Skin• Anus• Genitals

Hepatitis Virus – Infects the liver

• If you get this virus there is a chance that you will never get rid of it.

• 350 Million people world wide are infected with the virus and can not get rid of it (chronic)

Hepatitis Virus – How is it transmitted?

• Transmitted in a similar ways as HIV• If you get infected with the Hepatitis Virus, it may

damage your liver and lead to liver cancer.• 350 Million people world wide are infected with

the virus and can not get rid of it (chronic)• You can get vaccinated against the Hepatitis

virus so that you will be protected against it.