Diseases
A disease is an abnormal condition that affects the body of an organism, typically with specific symptoms or signs.
In families, it is more likely to find multiple members complaining of the same kind of disease. These diseases are caused by germs.
Germs are tiny organisms (living things) that may cause diseases. They are so small and sneaky that they can enter our bodies unnoticed. In fact, germs are so tiny that we need to use a microscope to see them.
Types of Germs
- Virus
- Fungi
- Worms
- Bacteria
Characteristics of Viruses
- They are the smallest microbes.
- They consist of strands of genetic information with a protein coat.
- Antibodies do not affect them.
Examples of Viruses
- Flu
- Chickenpox
- Measles
- HIV/AIDS
- Ebola
Characteristics of Bacteria
- They are larger than viruses.
- They are living cells found in most places.
- They grow and reproduce rapidly.
- Antibodies do affect them.
How Diseases Are Transmitted
- Through polluted water we drink
- Polluted air
- Eating contaminated food
Types of Diseases
- Communicable diseases
- Non-communicable diseases
Prevention of Diseases
- Supply of clean water
- Health education
- Prevention of pollutants
- Immunization
- Environmental sanitation
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