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Understanding Infectious Diseases PowerPoint Presentation

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Description : Check out this medical titled "Understanding Infectious Diseases”.

This medical is about infectious diseases, illnesses caused by microorganisms such as bacteria, viruses, fungi, or parasites that enter the body and cause harm. These microorganisms can be transmitted through different ways such as through the air, contaminated food or water, or direct contact with an infected person, animal or surface.

Some common examples of infectious diseases include the common cold, flu, tuberculosis, malaria, HIV/AIDS, hepatitis, and COVID-19.

Preventing the spread of infectious diseases often involves measures such as hand hygiene, wearing personal protective equipment, avoiding contact with infected individuals or surfaces, and vaccination. Treatment for infectious diseases may involve medications such as antibiotics, antivirals, antifungals, or antiparasitics, as well as supportive care to manage symptoms and complications.

Tags : microorganisms, viruses, fungi, parasites, common cold, flu, tuberculosis, malaria, HIV/AIDS, hepatitis, COVID-19, Infectious Disease, Infectious Disease

Published on : Jun 01, 2023 | Views : 1589 | Downloads : 1

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Slide 1-

Slide 1 of 17 Objectives Identify the causes of infectious diseases. Describe four ways in which infectious diseases are spread. Section 21.1 Understanding Infectious Diseases
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Slide 2 of 17 Myth There isn’t much a person can do to avoid spreading or catching a cold or the flu. Fact About 80% of infectious diseases are spread by hand contact. Washing your hands with soap and water is a simple and effective way to prevent the spread of colds and the flu. Do you think most teens wash their hands as much as they should? What do you think are some ways to encourage more frequent hand washing?
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Slide 3 of 17 Also known as communicable diseases, infectious diseases (in FEK shus) are caused by organisms or viruses that enter and multiply within the human body. Causes of Infectious Diseases Microorganisms (my kroh AWR guh niz ums) are organisms that can be seen only through a microscope. Microorganisms and viruses that cause disease are called pathogens (PATH uh junz). Pathogens can cause an infectious disease when they enter your body and multiply.
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Slide 4 of 17 Bacteria (bak TEER ee uh) are simple, single-celled microorganisms. Bacteria live in air, soil, food, and in and on the bodies of plants and animals, including you. Bacteria Some bacteria injure cells by giving off poisons called toxins (TAHK sinz).
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Slide 5 of 17 The smallest pathogens are viruses. Viruses A virus can multiply only after entering a living cell. The virus then takes over the cell’s reproductive mechanisms, resulting in cell damage or death.
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Slide 6 of 17 Organisms such as yeasts, molds, and mushrooms are known as fungi (FUN jy). Fungi Fungi grow best in warm, dark, moist areas.
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Slide 7 of 17 Single-celled organisms that are much larger and more complex than bacteria are known as protozoans (proh tuh ZOH unz). Protozoans Protozoans have the ability to move through fluids in search of food.
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Slide 8 of 17 Some infectious diseases are caused by animals such as mites, lice, and certain worms. Other Pathogens
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Slide 9 of 17 Click above to go online. For: More on infectious diseases
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Slide 10 of 17 Pathogens can spread through contact with How Pathogens Are Spread an infected person an infected animal contaminated objects contaminated food contaminated soil contaminated water The pathogens can then enter the body through breaks in the skin or through the moist linings of the eyes, ears, nose, mouth, or other openings.
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Slide 11 of 17 Many infectious diseases are spread through some form of contact with a person who has the disease. Infected People The contact may be direct physical contact. Infectious diseases can also spread through indirect contact.
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Slide 12 of 17 Some infectious diseases are transmitted to humans through the bites of animals. Infected Animals
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Slide 13 of 17 Some pathogens can survive for a period of time outside a person’s body. Contaminated Objects These pathogens can be spread from person to person on objects such as doorknobs eating utensils towels needles used for body piercings and tattoos
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Slide 14 of 17 Some pathogens are naturally present in food and soil. Contaminated Food, Soil, or Water Sometimes water and food become contaminated with pathogens from infected people.
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Slide 15 of 17 Vocabulary infectious disease A disease caused by an organism or virus that enters and multiplies within the human body. microorganism An organism that is so small it can only be seen through a microscope. pathogen A microorganism or virus that causes disease. bacteria Simple, single-celled microorganisms. toxin A poison given off by some bacteria that can injure cells. virus The smallest type of pathogen.
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Slide 16 of 17 Vocabulary fungi Organisms such as yeasts, molds, and mushrooms that grow best in warm, dark, moist areas. protozoan A large and complex single-celled organism.
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Slide 17 of 17 QuickTake Quiz Click to start quiz.
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Slide 18 of 17 End of Section 21.1 Click on this slide to end this presentation.