Name ___________________________________________________ Track/Grade ____________
Communicable & Chronic Diseases
Warm-Up: Write down what you think of when you here the term disease?
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Disease Definition: Condition that affects the proper _______________ of the body or mind.
Communicable Diseases
A _______________ that is spread from one living organism to _______________ or through the
environment, often through contaminated unclean or polluted water.
Another term for the diseases are “_______________” since they can be caught from others.
What Causes Communicable Diseases?
Pathogens are also known as germs
Four main classes
1. Viruses: _______________, nonliving particles that invade and take over healthy cells.
2. Bacteria: Extremely small, single-celled _______________ with no cell nucleus.
3. Protozoa: Single-celled organisms that have a _______________.
4. Fungi: Single-celled or many celled organisms that cannot make their own _______________.
Chronic Diseases
Also referred to as _______________ - _______________ because these diseases cannot spread from
one living organism to another.
An illness which is _______________. These diseases are also referred to as “degenerative” because
they break down organs.
They may be progressive, meaning the person will continue to get _______________ unless there is
medical care.
Causes of noncommunicable/chronic diseases:
- Poor health habits
- Lack of _______________ _______________
- Being _______________
- Eating foods high in fat
- Person’s _______________
- Heredity
- Some chronic diseases are present at birth
Read the following 20 diseases listed and decide if they are communicable or chronic. Place each disease
in the appropriate column:
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Food poisoning
Diabetes type 2
Asthma
Chicken pox
Tetanus
Heart disease
Polio
High blood pressure
Mononucleosis
Arthritis
Lyme disease
Influenza
Rabies
Cold
Alzheimer’s disease
Skin cancer
Smallpox
Osteoporosis
Bronchitis
Lung cancer
COMMUNICABLE
How Germs Are Spread
Direct Contact (Shaking Hands)
_______________ contact (travels through the air)
Eating contaminated food or water (food poisoning)
Contact with animals or ______________
How Diseases Spread - Direct Contact
Examples of Spread of Illness
How to Prevent
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Stepping on a nail and getting tetanus
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An unborn child getting infected from
mother during pregnancy
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An animal bite or scratch
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Chronic
How Diseases Spread – Indirect Contact
Examples of Spread of Illness
1. Contaminated objects
Sharing school materials with another child,
touching doorknobs or desktops touched by
someone who is ill.
How to Prevent
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Avoid touching your face or rubbing
your eyes.
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Avoid others who are sick.
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2. Other organism (vectors)
Being bitten by mosquitoes, ticks, fleas, or
flies. Diseases include malaria, hantavirus,
Lyme disease, Rocky Mountain spotted fever.
3. Contaminated food
Happens when food is improperly handled
or stored or not cooked well enough. Diseases
include salmonella, botulism, ecoli.
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Report the bite of any insect to an adult.
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Wash hands before eating or preparing
food.
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4. Contaminated water
Drinking water from unclean sources or
eating food prepared in unclean water.
Hepatitis A is an example.
Wash your hands before eating and after
using the bathroom
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Do not eat perishable foods that haven’t
been refrigerated for two hours.
Be certain water source is not
contaminated.
How Diseases Spread – Airborne Transmission
Examples of Spread of Illness
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Pathogens for flu and tuberculosis
are spread when an infected person
coughs or sneezes; can travel 10
feet.
How to Prevent
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Stay away from sick people
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Have a flu shot yearly
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Body’s Defense Against Communicable Diseases
Body’s Natural Barriers: Skin, __________, saliva, mucous, and stomach __________.
Infection – result of pathogens or germs invading the body.
Body _______________ rises to kill the germs