An organism or virus that causes a disease.
Musquito
Musquitos are carriers of the malaria protozoa.
Malaria
Flatworm
Tapeworm / Cestode
Roundworm
Viruses have antiviral drugs:http://en.wikipedia.org/wiki/Antiviral_drug
Influenza
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
Control of bacterial diseases using antibiotics
Types of antibiotics and their action
Pencilinase
Why they are uneffective against viral diseases
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