The correct answer is Screening.
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what causes a disease ?</h3>
Infectious diseases are illnesses caused by organisms like bacteria, viruses, fungus, or parasites. Many organisms inhabit and dwell on human body. They are usually innocuous or even beneficial. However, some microbes can cause disease under particular conditions.
Some infectious diseases are transmissible from person to person. Some are spread by insects and other animals. You can get others by eating contaminated food or drinking polluted water, or by being exposed to organisms in the environment.
The signs and symptoms vary depending on the organism causing the illness, although fever and exhaustion are common. Mild infections may respond to rest and home remedies, however severe infections may necessitate hospitalisation.
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