Pathogen

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Pathogen

An organism or virus that causes a disease.

Fungi

Vaginitis is vaginal infection are either caused by a yeast or bacterial infections:

http://en.wikipedia.org/wiki/Vaginitis#Infection

Oral or vaginal infection

Transmitted by sexual intercourse

Subtopic

Bacteria

Control of bacterial diseases using antibiotics

Why they are uneffective against viral diseases

Types of antibiotics and their action

Pencilinase

Viruses

Viruses have antiviral drugs:

http://en.wikipedia.org/wiki/Antiviral_drug

Ineffectve against antibiotics

Viruses use vital metabolic pathways within host cells to replicate, they are difficult to eliminate without using drugs that cause toxic effects to host cells in general. The most effective medical approaches to viral diseases are vaccinations to provide immunity to infection, and antiviral drugs that selectively interfere with viral replication.

Host cells' metabolic pathway

Influenza

Worms

Roundworm

Flatworm

Tapeworm / Cestode

Protozoa

Musquito

Musquitos are carriers of the malaria protozoa.

Malaria