CE Unit 7. Viruses and Vaccines
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1 CE Unit 7 Viruses and Vaccines
2 DO NOT WRITE What is a virus? Have you ever had a virus? What is a vaccine? How is a virus different from bacteria?
3 What are the deadliest viruses? 10. Dengue fever 50 million infections per year 25,000 deaths per year epidemic in 100 countries spread by mosquitoes most common in South America and Asia
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5 Symptoms: headache, fever, muscle pain, joint ache, rash Treatment: no vaccine, no treatment
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7 9. Yellow Fever kills 30,000 people per year found in West Africa spread by mosquitoes
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9 Symptoms: attacks heart kidneys and liver chills, fever, headache, slowed heartbeat Treatment: no cure vaccine gives 10 year immunity
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11 8. Rabies spread by dogs, bats, foxes, monkeys found in Asia, Africa, America, Europe kills 55,000 per year
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14 Symptoms: starts with headache and fever virus infects brain and causes pain, depression and inability to swallow water Treatment: vaccine for humans and animals after infection, induced coma and medication
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16 7. Hantavirus kills 70,000 per year spread by rodent waste
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18 Symptoms: shock, bloodshot eyes, breathing problems, kidney problems Treatment: one form of infection has medication other form has no treatment
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20 6. Measles has killed 200 million people in the past 150 years kills 197,000 each year spread person to person
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22 Symptoms: runny nose, cough, fever, sores inside mouth Treatment: vaccine available after infection, medication is used
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24 5. Hepatitis C million people infected world wide kills 500,000 yearly most don t know they have it spread by blood contact
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26 Symptoms: no symptoms for years eventually liver begins to fail Treatment: no vaccine treatment delays symptoms liver transplant possible
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28 4. Influenza infects birds and mammals virus takes over cells and kills them 500,000 deaths per year
29 Symptoms: fever, body aches, fatigue can last 2-3 weeks worse in elderly people Treatment: vaccinations available (must be given yearly)
30 3. Hepatitis B has effected 1/3 of the world population 350 million people are chronic carriers kills 521,000 per year spread by blood
31 Symptoms: yellowing of skin and eyes, nausea, fatigue, pain can cause liver failure or cancer Treatment no treatment at first if hepatitis is chronic, drugs are available
32 2. Rotavirus kills 611,000 per year kills mostly children spread by food contaminated with feces
33 Symptoms: vomitting, diarrhea, dehydration, fever Treatment: keep fluids in the body, sometimes with an IV
34 1. HIV killed more than 25 million people since 1981 kills 3.1 million per year transmitted through bodily fluids
35 Symptoms: no symptoms at first generally develops into AIDS in years AIDS symptoms include weight loss, respiratory infections, rashes Treatment: no vaccine or cure medication can decrease the amount of the virus in the body and prolong life
36 Vocabulary capsid attaches to specific cells (HIV targets white blood cells) causes the body to launch an immune response
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38 lysogenic cycle virus becomes a part of your DNA can never get rid of this virus HIV, herpes, hepatits
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40 lytic cycle virus infects and destroys cell once virus cycle is done, infection is done flu, ebola, measles
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42 prion contain a protein instead of DNA or RNA causes mad cow and scrapie
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45 retrovirus virus that injects RNA into your cell instead of DNA HIV
46 virus no cure very small, simple structure
47 epidemic Measles in the Congo now Dengue fever in Pakistan now Flu in US
48 vector virus does not harm the vector not all viruses can live inside a vector (HIV can t)
49
CE Unit. Viruses and Vaccines
CE Unit Viruses and Vaccines DO NOT WRITE What is a virus? Have you ever had a virus? What is a vaccine? How is a virus different from bacteria? What are the deadliest viruses? 10. Dengue fever 50 million
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