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Infection Control

By | June 2012
Page 1 of 9
Causes and Spread of infection

Q 1.1 - Identify the differences between: bacteria, viruses, fungi and parasites.

* Bacteria are unicellular, prokaryotic microorganism found almost in all kinds of habits. Some bacteria are beneficial like those involved in nitrogen fixation and some pathogenic, which cause diseases.

* Viruses are unicellular, tiny organisms which is mostly composed of DNA (DeoxyriboNucleic Acid) and protein. Its body compromises of head and tail sections. Viruses attach themselves to other organisms and cause severe infectious diseases.

* Fungi are a group of simple plants whose cells are devoid of chlorophyll. Fungus has chitis in its cell walls instead of cellulose. Fungi are popular for beneficial effects including food production, penicillin production and decomposition.

* Parasites are those micro-organisms which depend on other organisms (hosts) for their survival. Both virus and bacteria could be parasites.

Q 1.2 - Identify common illness and infections caused by: bacteria, viruses, fungi and parasites.

* Common illness and infections caused by bacteria are:-

- Impetigo.
- Salmonella.
- Tuberculosis (TB).
- Cholera.
- Anthrax.
- Shigella.
- Pertussis (Whooping Cough).
- Bubonic Plague.
-Leprosy.

* Common illness and infections caused by viruses are:-

-Aids / HIV.
- Hepatitis.
- Polio.
- Cold.
- Chicken Pox.

* Common illness and infections caused by fungi are:-

- Thrush.
- Ringworm.
- Anthrax.
- Athlete’s Foot.

* Common illness and infections caused by parasites are:-

- Diarrhea....

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