Infectious diseases are caused by microscopic agents called pathogens - True.
- Pathogens are a collective term for microbes that cause disease. Pathogens can cause disease by interfering with the body's natural functions or by activating the immune system to mount a defense, which manifests as high fever, inflammation, and other symptoms.
- Bacteria are tiny pathogens that quickly multiply once they enter the body.
- They are capable of releasing toxins that harm tissues and spread disease.
- To treat bacterial illnesses, doctors frequently prescribe antibiotics, but certain germs are evolving resistance to these medications. However, not all bacteria are harmful.
- There are five basic categories of pathogenic organisms: bacteria, fungus, viruses, protozoa, and worms.
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