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HLTH 1000 Midterm: Unit 2 Study Guide Part 1

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HLTH 1000
Julie Kulas

HLTH 1000 Unit 2 Study Guide Chapter 13: Protecting Against Infectious Diseases When it comes to your health and well-being, it is best to be proactive instead of reactive. (notes) Health is not merely the absence of disease or infirmity but a state of complete physical, mental, and social well being. (Concept of Health online lesson) Define infectious communicable disease. (Concept of Health online lesson) • A disease caused by pathogens that can be spread from person to person. In other words, diseases are transmitted through a series of steps—a Chain of Infection. The hands are the greatest source of infectious disease transmission. (notes) What are the six links in the “Chain of Infection?” (Concept of Health online lesson) • Pathogen Means of transmission • Reservoir Portal of entry • Portal of Exit New host Pathogens, disease-causing agents, are everywhere. We inhale them, swallow them, rub them in our eyes, and are constantly in a hidden, high-stakes battle with them. (p. 397) Historically, infectious diseases have wiped out whole groups of people through epidemics such as the Black Death, or bubonic plague, which killed up to one-third of the population of Europe in the 1300s. Pandemics, or global epidemics, continue to cause premature death throughout the world. (p. 397) The more easily pathogens can gain a foothold in the body and sustain themselves, the more virulent, or aggressive they may be in causing disease. (p. 397) Too much stress, inadequate nutrition, a low-fitness level, lack of sleep, misuse or abuse of drugs, poor personal hygiene, and high-risk behavior significantly increase the risk for many diseases. (p. 397-8) To gain entry into your body, pathogens must overcome barriers that prevent them from entering your body, mechanisms that weaken organisms, and substances that counteract the threat that these organisms pose. (p. 398) Your body’s first line of defense and one of the most critical barriers between you and an infectious agent is your skin. (p. 399) Any substance capable of triggering an immune response—a vir
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