Download List 5 ways can students minimize the spread of pathogens at school?

Name ___________________________________ Class _________________ Date ___________
Chp. 21 Common Infectious Diseases, Lesson 3
(pp. 558–563)
Objectives
• Identify some diseases caused by bacteria and by viruses.
• Describe behaviors that can help you get healthy and stay healthy.
Four infectious diseases caused by bacteria are strep throat, Lyme disease, meningitis, and
tuberculosis. Strep throat is common among teenagers. Symptoms include sore throat, swollen
nodes, headache, and fever. People can become infected with the bacteria that cause Lyme disease
when they are bitten by an infected tick. Symptoms include a rash at the site of the bite.
Bacterial meningitis is an infection of the fluid surrounding the spinal cord and the brain.
Symptoms include headache, high fever, stiff neck, and vomiting. Early treatment is critical to
prevent serious illness or death. Tuberculosis is a highly contagious infection of the lungs. It is
spread from person to person through coughing or sneezing. Symptoms may not occur for years after
the initial infection. A bacterial disease may be treated with an antibiotic (an tih by AHT ik), a drug
that inhibits or kills bacteria.
Viral diseases include the common cold, influenza, pneumonia, and hepatitis. The common
cold is really a group of symptoms caused by a number of viruses. Colds are spread through contact
with infected people or contaminated objects.
Influenza, or the flu, is an infection of the upper respiratory system. It is spread in the same way
as a cold, but can cause more serious symptoms, such as a high fever. In some cases, influenza can
develop into pneumonia, a serious lung infection. Hepatitis is an inflammation of the liver.
Symptoms include fever, pain in the abdomen, and yellowing of the skin. The most common types of
hepatitis are A, B, and C. Most viral infections cannot be cured by medication. Antibiotics are not
effective against viruses.
If you are worried about your health for any reason, see a doctor and discuss your concerns
with him or her.
You can protect yourself from infectious diseases in three ways: by avoiding contact with
pathogens, by making sure that your immunizations are current, and by choosing healthful
behaviors. One important healthful behavior is to wash your hands several times a day.
List 5 ways can students minimize the spread of
pathogens at school?
1.
2.
3.
4.
5.
Name __________________________________ Class _________________ Date ___________
Section 21-3
Note Taking Guide
Common Infectious Diseases (pp. 558–563)
Bacterial Diseases
Viral Diseases
1. Complete the outline by adding details about common infectious diseases.
I. Bacterial Diseases
A. Strep throat
1. Symptoms ____________________________________________________
_____________________________________________________________
2. Diagnosis _____________________________________________________
B. Lyme disease
1. Spread by _____________________________________________________
2. Symptoms ____________________________________________________
_____________________________________________________________
3. Protection _____________________________________________________
C. Bacterial meningitis
1. Description ____________________________________________________
2. Symptoms ____________________________________________________
_____________________________________________________________
3. Severity ______________________________________________________
D. Tuberculosis
1. Description ____________________________________________________
2. Spread by _____________________________________________________
3. Symptoms ____________________________________________________
_____________________________________________________________
E. Treating bacterial diseases
1. Treatment _____________________________________________________
Name __________________________________ Class _________________ Date ___________
Section 21-3: Note Taking Guide (continued)
Outline (continued)
II. Viral Diseases
A. The common cold
1. Description ____________________________________________________
2. Symptoms ____________________________________________________
3. Spread by _____________________________________________________
B. Influenza
1. Description ____________________________________________________
2. Spread by _____________________________________________________
3. Symptoms ____________________________________________________
4. Prevention ____________________________________________________
C. Pneumonia
1. People at risk __________________________________________________
2. Description ____________________________________________________
D. Hepatitis
1. Description ____________________________________________________
2. Symptoms ____________________________________________________
3. Types ________________________________________________________
E. Treating viral diseases
1. Treatment _____________________________________________________
Getting Healthy, Staying Healthy
2. For which condition listed below should you seek medical care?
_____
a. breathing difficulties
_____
b. a temperature of 99°F for one day
3. Which behavior listed below can help you avoid infectious diseases?
_____
a. staying up late
_____
b. cooking and storing foods properly