Warm Up. What do you think the difference is between infectious and noninfectious disease?
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1 Warm Up What do you think the difference is between infectious and noninfectious disease?
2 Infectious Diseases Chapter 14
3 Lesson 1: Types of Infectious Disease
4 Infectious Diseases An infectious disease is an illness that is caused by microorganisms. Microorganisms are very small things that are found everywhere. *Most do not cause disease Disease causing = pathogen
5 Infectious vs. Contagious Some *but not all infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious.
6 How (contagious) Diseases Spread Touching Coughing or Sneezing Sharing: food/drink Sexual Contact Insects/animals Contaminated water/materials
7 THINK-PAIR-SHARE When was the last time you had an infection (infectious disease)? What type of infection was it? Do you know how you were infected? What symptoms did you have?
8 What are bacteria? Bacteria are simple single-celled microorganisms that are found everywhere. *Reproduce very quickly by dividing in half. *A single bacterium can divide into two identical bacteria in as little as 20 minutes!
9
10 Not all are bad!
11 Bacteria Because bacteria can reproduce so rapidly, a few bacteria can cause a serious infection very quickly. How do they survive? Invade a host (human, animal, plant) Get nutrients from host cells Causes damage to the host
12
13 Types of Bacterial Infection Strep Throat Tuberculosis Sinus Infection* E. Coli Staph Infection Food Poisoning
14 How can I avoid? Limit contact with people who have a bacterial infection Avoid sharing food/drinks with others Wash your hands frequently and carefully (soap and water) Shower frequently (practice good hygiene) Eat a balanced diet and get enough sleep Why? Keep immune system healthy and strong
15 Antibiotics An antibiotic is a drug that can kill bacteria or slow growth of bacteria. Made from different organism including other bacteria and molds Important: follow doctor s instructions carefully Complete all of the antibiotics to eliminate the bacterial disease
16 KWL Chart KNOW WANT TO KNOW LEARNED
17 Verbal Warm Up (no entry) What do you think is the best remedy for the common cold?
18 Lesson 3: Viral Infections
19 Are viruses alive? *Most scientists do not consider viruses to be living things. Viruses contain: genetic material - chemical information that is passed on during reproduction *Although viruses cannot reproduce on their own They use an invaded organism s cells to produce more viruses
20 Common Viral Infections The Common Cold Caused by many different kinds of viruses Symptoms: congestion, runny nose, sore throat, sneezing, coughing Spread from coughing, sneezing, touching - contagious Treat: fluids and rest
21 Common Viral Infections Influenza (flu) Caused by three types of influenza (strains) Symptoms: body aches, high fever, headaches, chills, congestion, cough, and sore throat, vomiting Spread from coughing, sneezing, touching - contagious Treat: fluids and rest - see doctor
22 Other Viral Infections Chickenpox Flu (influenza) Herpes Human immunodeficiency virus (HIV/AIDS) Human papillomavirus (HPV) Infectious mononucleosis Mumps, measles and rubella Shingles Viral gastroenteritis (stomach flu) Viral hepatitis Viral meningitis Viral pneumonia
23 Vaccines A vaccine is a substance that helps the body build resistance to a certain disease. *Cannot completely stop the spread of a virus. Ex. Flu vaccines are developed yearly (new strains develop)
24
25 Fighting Viral Infections Most viral infections do not cause major harm Can cause more serious issues in babies, elderly people, and those who have weakened immune systems Our bodies are equipped to fight most infections Some antiviral medications do exist Most will take time: rest
26
27 Other Types of Pathogens Fungal (fungus/fungi): caused by fungi that are common in the environment Athlete's foot, jock itch, ringworm Parasites (parasitic worms): an organism that lives on or in a host organism and gets its food from or at the expense of its host. tapeworms, hookworms, pinworm
28 Lesson 4: Sexually Transmitted Infections (STIs)
29 What are STIs? A sexually transmitted infection is any infection that can be passed from person to person by any form of sexual contact. *STIs can be caused by bacteria, viruses, fungi, or parasites.
30 Textbook Notes Read and take notes on Ch Pg When finished, answer the lesson review questions on pg. 313 (# 1-5)
31 STI Rates Among Young Americans CDC Infographic
32
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