1. Infectious/Non-Infectious Disease
Non-Infectious Disease (Ch. 23)
A non-communicable disease (NCD) Disease which is non- infections and non-transmissible among people. Not transmitted by mean of a pathogen (disease causing agent).
- NCD may be chronic disease of long duration and slow progression or may result in more rapid death.
Ex. – Cancer, Heart Disease, Asthma, Diabetes, Stroke, etc.

2. 3 Categories of Non-Infectious Diseases
Genetic
Sex/Gender
Familial Disease Tendency

3. 3 Categories of Non-Infectious Diseases
Lifestyle
High Fat Diet
Lack of Sleep
Smoking/Smokeless Tobacco
Stress
Exposure to Sun
Lack of Exercise
Poor Nutrition

4. 3 Categories of Non-Infectious Diseases
Environment
Polluted Air and Water
Harmful Substances in Food
Exposure to Sun
Injury/Accident

5. Infectious Diseases
Infectious Disease: A disease caused by organisms- such as bacteria, viruses, fungi or parasite. Many live in and on our bodies. They’re normally harmless or even helpful, but some organisms may cause disease.
Pathogens: microorganisms and viruses that cause diseases
Enter your body and multiply making you sick
4 types:
Bacterial
Viral
Fungal
Protozoan

6. Bacterial Air, soil, food, in and on the bodies of plants and animals
Some give off toxins or a poison that could grow on the food (food poisoning)
Ex: strep throat

7. Viral 100 times smaller than bacteria
A virus can multiply only after entering a living cell
Ex: common cold

8. Fungal Yeast, molds, and mushrooms are known as fungi
Grows in warm, dark, moist areas.
Ex: athletes foot

9. Protozoans Single-celled organisms that are much larger than bacteria
Can move through fluids to search for food
Ex: Malaria (infects red blood cells causing weakness and nausea)

10. How Pathogens Are Spread
Infected people
Shaking hands
Indirect contact like coughs or sneezing
Infected Animals
Objects
Doorknobs, eating utensils, towels, cups
Food, Soil, or Water
Salmonella found in poultry and eggs
E. coli found in beef
Drinking water that is contaminated by sewage