Population movement a factor in the increase in lyme

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Population movement. A factor in the increase in Lyme disease is the movement of people into heavily wooded areas where ticks are prevalent. Symptoms include a rash, fatigue, fever, headache, stiff neck, sore muscles, and joint pain. Lyme disease can be treated with antibiotics. O THER C OMMON C OMMUNICABLE D ISEASES Cause/Transmission Virus attacks lymphocytes; spreads through direct contact, including sharing eating utensils and kissing Virus spreads when an infected person coughs, sneezes, or talks; highly contagious A virus usually carried by mosquitoes; causes inflammation of the brain Virus or bacteria cause inflammation of the membranes that cover the brain Treatment/Prevention Rest if tired No definite treatment; vaccine for prevention If caused by herpes simplex virus, antiviral medicine; if caused by another virus, no known treatment Viral meningitis: antiviral medicine if severe; bacterial meningitis: antibiotics; vaccine is available Symptoms Chills, fever, sore throat, fatigue, and swollen lymph nodes High fever, red eyes, runny nose, cough, bumpy red rash usually starting on head or face Headache; fever; hallucinations; confusion; paralysis; and disturbances of speech, memory, behavior, and eye movement Fever, severe headache, nausea, vomiting, sensitivity to light, stiff neck Disease Mononucleosis Measles Encephalitis Meningitis HS_HEALTH_U08_C24_L3 12/8/03 5:29 PM Page 640
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Reviewing Facts and Vocabulary 1. Compare and contrast the common cold and the flu. 2. What are three ways you can reduce your risk of getting influenza? 3. What are emerging infections? Thinking Critically 4. Synthesizing. What healthful behaviors can students in your class practice to reduce everyone’s risk of respiratory infection? 5. Analyzing. Why might emerging infections be an important area to receive funding for research? How can technology impact the reduction of diseases worldwide? P R E S E N T A T I O N S O F T W A R E Use presentation software to present the information you found on the disease you chose to investigate. Find help in using presentation software at health.glencoe.com. Lesson 3 Common Communicable Diseases 641 Resistance to antibiotics. The widespread use of antibiotics has resulted in pathogens that have become resistant. The pathogens that cause tuberculosis, gonorrhea (a sexually transmitted disease), and a type of pneumonia all have developed resistance to one or more antibiotics. Changes in food technology. Mass production and distribution of food increases the chance that contaminated food will infect a great number of people. E. coli has been responsible for outbreaks affecting thousands. Agents of bioterrorism. Because of the ease and frequency of travel, a contagious bioterrorist agent such as smallpox can spread rapidly from country to country.
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