Download Infectious Disease

Infectious Disease
Essential Questions
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What are some causes of infectious disease?
How do the 2 pathogens (bacteria & virus)
spread to cause disease?
How does the body defend infectious disease?
What is HIV/AIDS? How do you decrease
exposure?
What is an STI? How do you decrease
exposure?
Infectious Disease
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DEFINITION: A Disease caused by an
agent that invades the body.
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Virus - Cold, Flu, Chicken Pox, Measles,
Mumps, Fever & Mono
 Bacteria - Strep Throat, Pink Eye, Whooping
cough, Tuberculosis.
 Contagious Disease - is a disease that can be
passed directly from one person to another
person.
How are these things spread?
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Direct
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Handshake
Drinking from
someone else’s drink
Indirect
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Sneezing
Coughing
Body’s Defenses
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Immune System organs & special cells
that fight infection (6)
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Skin
Hairs
Tears
Mucus
Saliva
Stomach acid
Concept Map
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http://kidshealth.org/P
ageManager.jsp?lic=1
&article_set=59296&c
at_id=20607
YOUR BODY’S BEST DEFENDERS
TONSILS
THYMUS
LIVER
MUCUS
MEMBR.
BONE
MARROW
SPLEEN
LYMPH
NODES
SKIN
THE “ KILL “
 White
blood
cells literally
swallow the
invaders &
destroy the
pathogens.
Immune System
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Antibiotic - drug
that kills or slows
growth of bacteria.
Fever
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Raises body
temperature to fight
against the cold or
flu. Body is sending
virus fighting cells &
proteins throughout
the body so the
pathogens wont
reproduce.
Preventing Spread of Infectious
Disease
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Protect yourself
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Protect others
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Wash your hands
Do not drink from someone else’s water bottle
Blow your nose in Kleenex
Cough in sleeve
Get your shots
The Flu – Day 2
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How far can the common cold/flu viruses
spread?
List 4 of the 6 barriers in the body that help
prevent the common cold/flu. (worksheet)
What is the purpose of a fever?
What does an antibiotic do?
Immune Response
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Bacteria/Virus
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The body is infected with the bacteria/virus
Inflammation
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Swelling by a substance call Interferon.
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White Blood Cells (WBC)
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Lymphocytes which form T & B Cells
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Antibodies
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Will continue to fight disease throughout your life.
Body begins to build up immunity.
GloGerm/Video
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How did Holly catch the flu in the first place?
What is one of the most common flu viruses?
(Stated in the video)
How does a macrophage destroy cells?
How does Holly’s body fight back?
What do antibodies do?
Word Bank
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Infectious Disease
Contagious Disease
Fever
Antibiotics
Body’s Immune Response