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Infectious Diseases
Disease Prevention
Chapter 28 Lesson 3
9th Grade Level
Johanna Adderly
Shena Wright
Ayana Rhoden
Infectious Disease
– Section1:
–What causes Infectious
Disease?
– Section2:
–Prevention of Infectious
Disease
What causes infectious
disease?
– What are infectious disease?
– Different types of Infectious
disease
– How is it transmitted?
– Common infectious Disease
What are Infectious
Diseases?
A disease resulting from the presence
and activity of a pathogenic microbial
Agent.
Different types of infectious
Disease
Bacteria
 Viruses
 Rickettsias
 Protozoans
 Fungi

Bacteria
– Single cell microorganism
– Can live anywhere
– Some bacteria are good for
our bodies
– Some are poisonous to the
human body
Viruses
– Smallest know infectious
agent
– Nonliving
– Needs a host to survive
– Enters body and makes
copies of itself
Protozoans
– Single cell organism
– Larger than Bacteria
– Most are harmless
– Thirty different types can cause diseases
– Happens where there is poor sanitation
Fungi
– Simple organism
– Unable to produce their
own food
– Usually eat dead animals,
insects, and leaves
– Like in damp and dark
surroundings
How are infectious diseases
transmitted?
– Two modes of Transmission
– Direct Contact
– Indirect Contact
Direct Contact


Person to person
– Kissing
– Exchange of body fluids
Animal to person
– Being bitten
– Handling pet waste
Direct Contact
– Mother to child
• Breast Feeding
• Mother to unborn
child (ex:umbilical
cord)
Indirect Contact
– Droplets and Airborne
Particles
– Coughing
– Sneezing
– Vectors and Vehicles
– Bites and Stings
– Food Contamination
Common Infectious Diseases

Respiratory Infections

Infection of the Nervous
System
Respiratory Infection
Common Cold
 Influenza
 Tuberculosis

Infection of the Nervous
System
Encephalitis
 Meningitis
 Poliomyelitis
 Measles
 Hepatitis

Prevention of Infectious
Disease
Five Modes of Prevention
 Proper Method of Hand washing
 Attitudes towards Making a lifestyle Change

Five Modes of Prevention
Immunization
 Antibiotics
 Food Preparation
 Practicing Safe Sex
 Hand Washing

Immunization
 Two Types
of Immunization
– Passive Immunization
– short term affect
– Blood contains antibodies
Immunization

Active Immunization
(Vaccination)
• Vaccine provide immunity
• Immediately effective
• Last a long time
Antibiotics
– Take what is
prescribed TO YOU
ONLY!
– Take them as directed
– Don’t stop taking
them
Food Preparation

Do’s
– Refrigerate food purchased
– Wash raw fruits and vegetables
– Cook poultry and meat
thoroughly
– Keep seafood, poultry, and egg
separate from fruits
Food Preparation

DON’T
– Eat raw eggs
– Leave leftovers out for
more than 2 hrs
Practice Safe Sex


Abstinence

Using Protection
Getting Tested
Hand Washing Video
Facts About Hand Washing
America aren't washing your hands often
enough
 According to CDC, hand washing is most
important thing you can do to prevent
infectious diseases
 America has received a “C” for hand
washing

Facts About Hand Washing
Con’t
43% says they don’t wash
after sneezing or coughing
 32% fail to wash before
lunch
 54% don’t wash for 20
seconds

Statistical Graph on Hand
Washing
Hand Washing
People infected
0.7
0.6
0.5
0.4
Series1
0.3
0.2
0.1
0
1993
1994
1995
1996
Year
1997
1998
Attitudes towards making a
lifestyle change
– Being Lazy
– “Nothing will happen to me”
– “Out of sight out of mind”
– “When it happens, I will deal with it”