9/19 warm-up
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9/19 Warm-up. Open Google Chrome internet browser Go to Socrative.com Click on Student log in Enter Hayes-Science Enter your first and last name Answer the question posted. Infectious Diseases. 8 th grade science Sept. 19, 2013. What are Infectious Diseases?. - PowerPoint PPT PresentationTRANSCRIPT
9/19 Warm-upOpen Google Chrome internet browser
Go to Socrative.comClick on Student log inEnter Hayes-ScienceEnter your first and last name
Answer the question posted
Infectious Diseases8th grade scienceSept. 19, 2013
What are Infectious Diseases? Infectious diseases are diseases caused
by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi; the diseases can be spread, directly or indirectly, from one person to another.
Infectious Disease TransmissionPhysical contactContaminated foodBody fluidsObjectsAirborne inhalationVector organisms
Routes of transmissionDirect Skin-skin
Herpes type 1 Mucous-mucous
STI Across placenta
toxoplasmosis Through breast milk
HIV Sneeze-cough
Influenza
Indirect Food-borne
Salmonella Water-borne
Hepatitis A Vector-borne
Malaria Air-borne
Chickenpox
Infection in one person can be transmitted to others
Think about the simulation from a few weeks ago!!
Factors influencing disease transmission:
Epidemic vs. Pandemic Epidemic is where an infectious
disease spreads over a wide geographical area.
Pandemic is where an infectious disease spreads across multiple continents, or even worldwide.
Here are a few…Caused by Bacteria
Caused by Viruses Caused by Protozoa
Anthrax AIDS/HIV Dysentery
Lyme Disease * Chicken Pox Malaria *Leprosy Small Pox
Bacterial Meningitis Yellow Fever *Strep Throat Ebola
Tuberculosis SARS
Rabies*
Influenza
West Nile Virus *Viral Meningitis
Polio
Common Cold* Denotes diseases that are vector based.
AIDS
AIDS (Acquired Immunodeficiency Syndrome)
Caused by HIV (human immunodeficiency virus) progressively reduces the effectiveness of the
immune system and leaves individuals susceptible to opportunistic infections and tumors.
transmitted through direct contact of a mucous membrane or the bloodstream with a bodily fluid containing HIV, such as blood, semen, vaginal fluid, preseminal fluid, and breast milk.
has not been found to be transmitted through saliva unless there is a cut in your mouth.
Malaria
Malaria a mosquito-borne infectious disease of
humans caused by eukaryotic protists It is widespread in tropical and
subtropical regions, including much of Subsaharan Africa, Asia and the Americas.
results from the multiplication of malaria parasites within red blood cells, causing symptoms that typically include fever and headache, in severe cases progressing to coma, and death.
Tuberculosis (TB)
Tuberculosis caused by various strains of mycobacteria usually attacks the lungs but can also
affect other parts of the body. spread through the air when people who
have active MTB infection cough, sneeze, or spit
classic symptoms are a chronic cough with blood-tinged sputum, fever, night sweats, and weight loss