Chapter 10 Lesson 2 Infectious Diseases...

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Lesson 2 Infectious Diseases

Bellringer

List three common infectious diseases, and list the

type of pathogen that causes each disease.

Chapter 10




Objectives

• Identify four causes of infectious diseases.

• Explain how the spread of common infectious

diseases can be prevented.

Chapter 10




Start Off Write

How can you keep from catching a cold?

Chapter 10




Viruses

• A virus is a tiny, disease-causing particle that

invades a healthy cell and instructs that cell to

make more viruses.

• Viruses are known to cause many diseases

including:

1. the flu

2. the common cold

3. AIDS

4. herpes

Chapter 10



Lesson 2 Infectious DiseasesChapter 10

Viruses are not living things.




Bacteria

• Bacteria are very simple single-celled

microorganisms that do not have a nucleus.

Bacteria are found everywhere.

• Bacteria cause many kinds of diseases including:

1. whooping cough

2. cholera

3. anthrax

4. dental cavities

Chapter 10




Protozoa and Parasites

• Protozoa are small, single-celled organisms that

have a nucleus.

• Protozoa and other parasites cause many kinds of

diseases including:

1. malaria

2. diarrhea

3. tapeworm infections

Chapter 10




Fungi

• Fungi are complex organisms that cannot make

their own food.

• Fungi cause many kinds of diseases including:

1. athlete’s foot

2. jock itch

3. yeast infections

Chapter 10



Lesson 3 Controlling Infectious Diseases

Bellringer

Why do you think some communities offer free or low-

cost flu shots to their residents every year?

Chapter 10



Objectives

• Discuss two ways to protect yourself from

infectious diseases.

• Identify two ways to control the spread of

infectious diseases.

Chapter 10Lesson 3 Controlling Infectious Diseases



Start Off Write

Why should you know basic ways to stop the spread of

infectious disease?




Protecting Yourself

• Do the following things to protect yourself against

infection:

1. Stay away from people who are sick.

2. Practice good hygiene.

3. Maintain a healthy diet.

4. Get plenty of rest and exercise.

5. Get vaccinated.




Protecting Yourself

• The following diseases are commonly prevented by

vaccines:

1. hepatitis B

2. diphtheria

3. poliomyelitis

4. measles, mumps, and rubella

5. flu




Protecting Others

• The same steps you take to protect yourself from

pathogens will also help protect other people. You

can also:

1. Avoid contact with people when you are sick.

2. Get a flu vaccine every year.

3. Report any sightings of infected animals.




Quote of the Day

“Keep you blood clean, your body lean, and

your mind sharp.”

—Henry Rollins

Chapter 10 Lesson 2 Infectious Diseases...

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