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NAME: ____________________________ DATE: __________________ PERIOD: _____________ VIRUS SPREAD SIMULATOR I. 1) Go to website-- http://www.washingtonpost.com/wp-srv/special/health/how-ebola-spreads/ 2) Slide the day indicator toggle bar near the top of the page (next to the boxes that indicate colors for newly infected, recovered & deaths) to day 1. This represents the day one person was infected with each of the viral diseases listed in the tables below 3) Slide the indicator to the days indicated in the tables and record the number of people infected and number of deaths for each disease for each of the days. Answer the questions that follow. Days Elapsed 1 10 20 30 40 50 60 70 Days Elapsed 1 10 20 30 40 50 60 70 EBOLA People Infected 1 Number of Deaths MEASLES People Infected 1 Number of Deaths Days Elapsed 1 10 20 30 40 50 60 70 Days Elapsed 1 10 20 30 40 50 60 70 SMALLPOX People Number of Infected Deaths 1 FLU People Infected 1 1) How many days did it take for each of these diseases to affect 100 people? Ebola SmallpoxMeasles- Number of Deaths Flu- 2) Based on your answers to question #1, rank the diseases (ebola, smallpox, measles and flu) from most to least contagious (how easy it is to catch and spread the disease). 3) How many of the 100 people infected did each of the diseases eventually kill (this number represents the percentage of people killed by the disease)? Convert this percentage to a decimal by dividing it by 100. Ebola: ________% (decimal) ________ Smallpox: ________% (decimal) ________ Measles: ________% (decimal) ________ Flu: ________% (decimal) ________ 4) The population of the U.S. is approximately 300 million people. If each disease spread to the entire population, how many people would each disease kill (multiply 300million by each decimal from question 3)? Ebola SmallpoxMeaslesFlu- II. 1) Go to website - http://www.washingtonpost.com/wp-srv/special/health/ebola-effect-on-body/ 2) Click on “Stages of Hemorrhagic Fever” arrows and answer the questions below. Questions: 1) Ebola virus particles occupy an infected person’s ____________ and other bodily fluids, which can enter another person through the __________, mucous membranes, scratches on the __________or from a hypodermic needle — not from from the __________ or from insects. The bodies of people who have died of the disease are highly infectious. 2) Lasts ____ to ____ days, but most often ____ to ____ days before symptoms suddenly appear. 3) The virus attacks ______________cells in the bloodstream, which carry the infection to the ______________, ______________ and ______________ nodes. 4) Proteins released by immune cells create widespread ______________, which can damage the tissue lining blood vessels, causing them to leak. When immune cells known as ______________ are attacked by Ebola, they release proteins that cause coagulation in the bloodstream, ______________ blood flow to organs such as the liver, brain and kidneys. Red blood cells break apart when moving through small vessels filled with clots. The ____________ becomes overwhelmed with broken blood vessels. As cells in the liver are destroyed, the blood loses its normal ability to ____________, exacerbating any internal or external hemorrhaging. Massive blood loss is not a frequent result of Ebola, but when it does happen, it is usually in the ________________. 5) After five or more days, patients often develop signature signs of an Ebola infection: a) Bumpy red __________ on the face, neck, torso & arms; __________ can ____________ off. b) Severe ________________, nausea and __________________. c) Chest pain, shortness of breath, ________________, confusion, bloodshot eyes, hiccups or ________________. d) Spontaneous __________________, skin hemorrhages. e) __________________ from the ____________, ears, nose, ____________ mucus membranes & rectum. 6) A breakdown of the adrenal glands leads to dangerously low blood ______________. Liver failure and ________________ often occur. An infected ________________ can cause severe ________________ pain. 7) Fluid accumulates in the ________________. __________________ can cause patients to ________________ infectious ________________ and other bodily fluids. 8) People who die from the disease usually develop severe symptoms early on and die between days ______ and ______, succumbing to extreme low blood pressure, multi-____________ failure and the shock of severe infection. The death rate can be as high as ________ percent. In non-fatal cases, patients might have a fever for several days and maybe even a few advanced symptoms before improving, usually between days six and 11, but full recovery can be a long process involving inflamed ____________, recurrent hepatitis, bloodshot __________ & psychosis.