Pandemic Diseases Michelle Casale. Definitions (dictionary.com) Disease- a disordered or incorrectly functioning organ, part, structure, or system of.
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Definitions (dictionary.com) Disease- a disordered or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors, infection, poisons, nutritional deficiency or imbalance, toxicity, or unfavorable environmental factors; illness; sickness; ailment.
Main Diseases AIDS/HIV Flu of 1918 SARS Smallpox Tuberculosis
HIV/AIDS HIV(Human Immunodeficiency Virus) Attacks the immune system using healthy white blood cells to replicate itself and break down the immune system leaving your body more susceptible to illness. AIDS (Acquired Immune Deficiency Syndrome) HIV+ person diagnosed with AIDS they are no longer able to fight off illness because their immune system is so weak. Much more vulnerable to infections such as pneumonia and various forms of cancer. (opportunist infections) No known cure or vaccine for AIDS More than 25 million people have died of AIDS since 1981. Africa has 11.6 million AIDS orphans Young people(under 25 yrs. Old) account for half of all new HIV infectiions worldwide. In 2007 more than 2.5 million adults and children became infected with HIV. By the end of the year, 33 million people worldwide were living with HIV/AIDS and two million died.
Flu of 1918 Killed more people than WW1; somewhere between 20 and 40 million Cited as the most devastating epidemic in world history Origin not precisely known. They blame the war(the use of mustard guns and the generated “smoke and fumes” WW1 aided its rapid circulation and attack with its mass movements of men in armies and aboard ships Known as the “Spanish Flu” because of its large mortalities in Spain where it allegedly killed 8 million in one month. Circled the globe, outbreaks swept through North America, Europe, Asia, Africa, Brazil, and the South Pacific Affected everyone. One quarter of US and one fifth of the world was infected. Physicians of that time were helpless against the powerful pandemic Children in 1918 would jump rope the rhyme: I had a little bird, Its name was Enza. I opened the window, And in-flu-enza.
SARS Severe Acute Respiratory Syndrome A serious form of pneumonia caused by a virus isolated in 2003 results in severe breathing difficulty and sometimes death. First reported in Asia. Within 6 weeks of discovery, infected thousands of people throughout the world including people in Asia, Europe, North and South America, Australia, and Africa. Total of 8,098 people worldwide became ill with SARS. Of that, 774 died. Only 8 people in the US had laboratory evidence of the SARS infection. All of these people traveled to other parts of the world that had SARS. Spread by close person-to-person contact most readily through respiratory droplets produced when someone coughs or sneezes.
Smallpox A severe contagious disease caused by variola virus Believed to have originated over 3000 years ago in India or Egypt and is one of the most devastating diseases known to humanity. For centuries, repeated epidemics swept across continents destroying populations and changing the course of history. Killed as many as 30% of those it infected. 65-80% of survivors were marked with deep pitted scars called pockmarks, mostly on the face. As late as the 28 th century, it killed every 10 th child born in Sweden and France and every 7 th child born in Russia. In the early 1950s about 50 million cases of smallpox occurred in the world each year. Fell to around 10-15 mil. By 1967 because of vaccination Last single natural case was occurred in Somalia in 1977.
Tuberculosis A bacterial infection caused by a germ called mycobacterium tuberculosis. Attacks the lungs but can damage other parts of the body. If not treated properly can become deadly. Classic symptoms are a chronic cough, coughing up blood, fever, night sweats, and weight loss. Treatment is difficult and requires long courses of multiple antibiotics. 1/3 of the worlds population has been infected with tuberculosis. New infections occur at a rate of one per second. In 2007, there were an estimated 13.7 million chronic active cases, 9.3 million new cases, and 1.8 million deaths, all mostly in developing countries. Distribution of TB, although worldwide, not uniform. 80% of population in many Asian and African countries test positive for it while only 5- 10% of the US population test positive.