Infectious Diseases

By: Elaina Ramon

Objectives

8.L.1.1 - Summarize the basic characteristics of viruses, bacteria,fungi, and parasites relating to the spread,treatment and prevention of disease.

8.L.1.2 - Explain the difference between epidemic and pandemic as it relates to the spread, treatment and prevention of disease.

Microbiology

Microbiology is the branch of science that deals with microorganisms. Microbiology has been around for a very long time. The microbes that it studies generates half of the oxygen that we breathe.

Virus

A virus is a non-living pathogen that can change mutate. It infects a host cell and replicates to cause illness and disease. They cannot survive with a host cell. They kill your healthy cells. Viruses spread by air, on surfaces, and contact with any infected person. You can treat viruses with antibiotics. You can prevent it by washing your hands, by not touching your face, getting vaccinated and staying at home if infected. It can cause diseases such as colds, influenza, polio, and west nite.
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Bacteria

Bacteria is a single-celled organisms that can cause disease. They multiply rapidly and can form colonies. Bacteria are living organisms. They are transmitted, by spreading through the air and on surfaces. They are treated with antibiotics. You can prevent this disease by washing your hands, and cleaning cuts and skin wounds. Bacteria can cause diseases such as food-poisoning, strep throat,tuberculosis, and ecoli.
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Fungi

Fungi are single-celled or multi-cellular organisms that can decompose or absorb organic matter. For example, mushrooms, yeast, or mold. Fungi are living organisms. They spread by wind,water,or animals. You can treat it by anti-fungal creams, shampoos,and medicine. You can prevent it by not sharing shoes, wearing dry socks, and by washing your hands. Fungi can cause diseases such as athletes foot, thrush,jock-itch,and ringworm.
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Parasites

Parasites are organisms that live in or on another organism,called a host,taking nutrients and often harming it in the process. Parasites are living organisms. They spread by moving in their own from one organism to the next. You can treat it with medicines, direct removal of parasite from host. You can prevent it by avoiding biting nails, avoid eating raw meat, and wash your hands. Parasite can cause diseases such as malaria,amebic dysentery.
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Outbreak,Pandemic,Epidemic

An outbreak is an occurrence of a disease greater than would otherwise be expected at a particular time and place. A pandemic is an epidemic that spreads over a very large area or throughout the world.An epidemic is an outbreak of a disease that affects many people in an area of a specific country or region.
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Important Vocabulary

Outbreak-Occurrence of a disease greater than would otherwise be expected at a particular time and place.

Epidemic-An outbreak of a disease that affects many people in an area of a specific country or region.

Pandemic-An epidemic that spreads over a very large area or throughout the world.

Vector-An organism typically an insect, transmits disease.

Pathogen-A virus,bacteria,fungi,parasite, or protozoa that can cause illness and infection.

Protozoa-Diverse organisms that cannot be classified as animals ,plants,or fungi,.EX: amoebas and algae.

Virus-A non-living pathogen that can change mutate.It infects a host cell and replicates to cause illness and disease.

Bacteria-Single-celled prokaryotes that can cause disease.Multiply rapidly and can forms colonies.

Parasite-An organisms that lives in or on another organism, called a host, taking nutrients and often harming it in the process.

Fungi-A single-celled or multi-cellular organism that can decompose or absorb organic matter.EX: mushrooms,yeast,or mold

Host Cell-A call that a virus invades,take over, and makes copies of itself.

Quarantine-A time or place of isolation in which people or animals that have been exposed to infectious or contagious diseases are placed.