Infectious Diseases

By: Hunter Reid

What is Microbiology

Microbiology is the study of microorganisms

Characteristics of Bacteria

Bacteria is a single celled prokaryotic microorganism that live in soil water or inside living things and can reproduce rapidly. They are small and could be spherical, rod, spirilla shaped.

Characteristics of Viruses

Virus is a nonliving, they have disease producing particles, they are unable to reproduce without a host cell. Viruses can be shaped like a helical, icosahedral, complex and enveloped.
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Characteristics of Parasites

Parasites are on organism that lives on or inside of another organism and benefits by taking nutrients from its host. Parasites don't have a shape because it can be any insect can give you a disease also known as a vector.

Characteristics of Fungi

Fungi are a diverse group of eukaryotic organisms that live by decomposing the organic material in which they grow. Fungi can be mushrooms, algae, mold, and also mildew, etc.


An outbreak is a spread of a disease that only spreads to one area. Like if at a school and 90 kids all have the flu at once then that would be an outbreak.


An epidemic is a spread of a disease that spreads over a region or a country.


A pandemic is a spread of a disease that has spread world wide.

Differences and Simularties

Epidemic will only be in one specific place, only in one country.

Pandemic will be all over the world.

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Important Definitions


Any insect that can transmit a disease or parasite to one animal or plant from another organism.


Anything that can cause a disease.


Are a diverse group of unicellular eukaryotic organisms.


A nonliving pathogen that can change mutate. It infects a hose cell and then replicates to cause illness and disease.


Single celled prokaryotes that can cause disease. Multiply rapidly and can form colonies.


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


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, takes over, and makes copies or itself.


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