National Institutes of Health

Emerging and Re-emerging Infectious Diseases part A

Prerequisite Knowledge: Students should be familiar with bacteria and

viruses and understand that infectious diseases are due to infection of the body by an external agent

What disease do you think is the greatest threat to students in this class?

Write idea’s in blank spot.

What disease do you think is the greatest threat to the worlds population?

Write idea’s in blank spot.

WHO top killers globally 2011? Heart disease is the

top killer globally Stroke and

Cerebrovascular disease is #2

Pneumonia (#3) chronic obstructive

pulmonary disease (#4)

diarrheal diseases such as cholera (#5)

HIV/AIDS is the 6th highest killer worldwide

#7: cancer of the trachea, bronchus, or lung

#8: Diabetes Traffic accidents #9 Prematurity #10

Heart disease, stroke, lower respiratory infections, chronic obstructive lung disease, diarrhea and HIV/AIDS have remained the top major killers during the past decade.

Tuberculosis is no longer among the 10 leading causes of death, but is still among the top 15, killing one million people in 2011.

Chronic diseases cause increasing numbers of deaths worldwide. Lung cancers (along with trachea and bronchus cancers) caused 1.5 million (2.7%) deaths in 2011, up from 1.2 million (2.2%) deaths in 2000. Similarly, diabetes caused 1.4 million (2.6%) deaths in 2011, up from 1.0 million (1.9%) deaths in 2000

The Germ Theory of Disease Was fully developed by Robert

Koch in 1870 as he studied anthrax. Koch devised a set of steps to prove that a

particular bacterium causes a specific disease.

Try to think of these steps

Page 880-882

1. The organism should always be found in the animals suffering from the disease

2. The organism must be isolated from the animal's body and cultivated in pure culture

3. The culture should induce the same disease when  inoculated into a healthy animal.

4. the organism should be re-isolated and cultured from  the healthy animal and found to be the same as the  original organism.

Causes of Death Quiz

Which of the Following Diseases Has

Been Recognized Since Antiquity? a. AIDS

b. Ebola hemorrhagic fever

c. guinea worm disease

d. Legionnaire disease

What disease killed thousands of European and American city dwellers in the 1700’s and 1800’s

a. AIDS

b. Lung Cancer

c. Polio

d. Tuberculosis

What infectious disease causing severe fever and chills plagued settlers in the Southern and Midwestern United States during the 1800s and early 1900s?

a. Legionnaire disease

b. Lyme disease

c. Malaria

d. Schistosomiasis

Most deaths among U.S. servicemen in 1918 were due to what cause?

a. automobile accidents

b. flu

c. injuries sustained on the battlefields of World War I

d. plague

According to the World Health Organization, which of the following diseases caused more deaths last year than the others?

a. AIDS

b. Diabetes

c. lung cancer

d. pneumonia

Watch the movie on :http://science.education.nih.gov/supplements/nih1/diseases/activities/activity1.htm

Which of the Following Diseases Has

Been Recognized Since Antiquity? a. AIDS

b. Ebola hemorrhagic fever

c. guinea worm disease

d. Legionnaire disease

What disease killed thousands of European and American city dwellers in the 1700’s and 1800’s

a. AIDS

b. Lung Cancer

c. Polio

d. Tuberculosis

What infectious disease causing severe fever and chills plagued settlers in the Southern and Midwestern United States during the 1800s and early 1900s?

a. Legionnaire disease

b. Lyme disease

c. Malaria

d. Schistosomiasis

Most deaths among U.S. servicemen in 1918 were due to what cause?

a. automobile accidents

b. flu

c. injuries sustained on the battlefields of World War I

d. plague

What is an infectious disease?

Which are infectious diseases?a. AIDS

b. Ebola hemorrhagic fever

c. guinea worm disease

d. Legionnaire disease

e. Lyme disease

f. Malaria

g. Schistosomiasis

h. Diabetes

i. Heart disease

j. pneumonia

k. Cystic fibrosis

l. Cancer

•Noninfectious diseases such as cancer, heart disease,and cystic fibrosis cannot be

“caught,”

•Infectious diseases such as AIDS and tuberculosis are caused by agents that can

be transmitted from one individual to another.

Impact of Infectious Diseases on peoples health and well being Medical advances in the last century

have resulted in far fewer deaths from infectious diseases than at any other time in history

Infectious diseases are still the leading cause of death worldwide and the third leading cause of death in the United States.

Researchers have discovered that infectious agents may play a role in some diseases that were previously considered noninfectious, chronic

conditions.

For example

Might heart disease be infectious?

Infection by Chlamydia pneumoniae may contribute to the development of cardiovascular development of cardiovascular diseasedisease

Gastric ulcersGastric ulcers are caused by Helicobacter pylori bacteria.

Activity

Get a set of disease cards

Scientists find it useful to group diseases depending on the problems they want to address.

Find the chart and classify the disease cards by Infectious agent. For example one example of a category may be virus.

Criterion: Infectious AgentCategory

Disease

Solicit titles for the categories identified from several teams and write them on the appropriate place on Disease Classifications master. Then, ask the other teams to name one or more diseases they classified in the categories and write these into the appropriate columns. Ask students to describe the symptoms of each disease as they do so. Ask students to suggest reasons why scientists might find it useful to classify diseases based on the type of infectious agent.

Now find the next chart and disease cards by Mode of Transmission

Criterion: Mechanism of Transmission

Category

disease

Finally, find the next chart and disease cards by History of occurance

Criterion: History of Occurrence

Category

disease

Put all diseases into three groups: emerging, re-emerging and endemic diseasesEmerging Re-emerging Endemic

Check your work

End of Part 1. Print review Objectives: After completing this activity,

students will recognize that infectious diseases are a

continuing problem among all human populations,

be able to define and give examples of emerging infectious diseases, and

be able to define and give examples of re-emerging infectious diseases.

Assignment: Read handout labeled “Introduction” Read 880-884 in the book. Define

highlighted words and answer questions page 884.

To prepare for next time look up the following: What is an infectious disease? What is an antibody? When does the body produce antibodies? How are antibodies used to test for diseases?

Extra Credit Internet Web sites maintained by both the Centers

for Disease Control and Prevention (www.cdc.gov/) and the World Health Organization (www.who.org/) include health topic sections that provide information on infectious (and noninfectious) diseases.

Use these and other resources to create additional disease cards and to classify those diseases as emerging, re-emerging, or endemic.