Infectious Diseases

Raniel Job Bernard S. Quipit

Infectious Diseases

What are Infectious Diseases?Communicable

Diseases that are transmissible from one person to another

Key Term:Contagious – communicable dses. that is easily transmitted from one person to another

Ex.: TB, Rabies, Influenza

Elements of Infection: Triangle of Epidemiology

Environment

Susceptible Host

TIme

Agent

Infectious Agents

Bacteria

Fungi

Human Parasites

Virus

Bacteria Shape: cocci, bacilli, spirochette

Reproduction: asexual by binary fission

Locomotion: Some have flagella

Human Parasites Forms

protozoans - unicellular Metezoans - multicellular

Most common helminths: Nematodes (roundworms) Cestodes (tapeworms) Trematodes (flatworms)

Fungi Reproduce asexually or sexually, the

reproductive structure is called a spore

They get food from the environment

2 types of fungi: Yeasts – non-filamentous and unicellular Molds – filamentous and multicellular

Virus Can not be seen by the naked eye

Assume variety of shapes: Spherical, hexagonal, bullet shaped, etc.

Very simple structure: Core made out of DNA or RNA

Surrounded by a protein coat

Sources:

http://www.youtube.com/watch?v=m-3Ju0EX3gQ

Sources:

science.howstuffworks.com

Sources:

www.heavy.com

Sources:

www.edu.pe.ca

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