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a microorganism that causes a disease


living organism that is so small it can be seen only w/ the aid of a microscope


one-celled microscopic organisms; there are several different types; not all are bad for you


rod-shaped, spore-forming bacteria; can cause Tetanus & TB


small bacterium that lives in lice, fleas, ticks and mites; cause: Rocky Mountain Spotted Fever


sprial-shaped bacteria that have flexible walls and can move; causes Lyme Disease


bacteria that form irregular groups or clusters; may cause bacterial pneumonia


bacteria that form a singular chain; can cause pharyngitis, aka Strep Throat


simple parasitic plant; some are harmless; can cause aspergillosis (affects any organ)


a type of fungus; ex is candida albicans that affects the skin or mucous membranes (common place is mouth and vagina)


plan or animal that lives on or within another living organism at the expense of that organism; example: malaria


very small infectious agents that live by invading healthy cells, reproducing and breaking through the cell wall to spread to other cells


chickenpox; highly contagious viral disease that causes fever and pustules, transmitted by droplets or direct contact w/ the sores


infection that may not have s/s unless you are pregnant or immunocompromised; can cause blindness, mental disability, etc in newborns

Herpes Zoster

aka shingles; acute viral infection characterized by painful skin eruptions that follow the underlying route of the inflamed nerve; originates w/ the person having chicken pox & reactivated when the immune system is compromised

Infectious Mononucleosis

caused by Epstein-Barr Virus, characterized by fever, sore throat, enlarged lymph nodes; can last for weeks


acute, highly contagious viral disease transmitted by respiratory droplets; characterized by Koplik's spots, followed by a spreading skin rash


viral disease characterized by the swelling of parotid glands


viral infection that may be transmitted to humans by the blood, tissue, salivary glands of an infected animal


aka German Measles; viral infection characterized by fever, diffuse, fine, red rash. If mother has it it may cause congenital abnormalities


chemical substance that stops the growth or kills pathogenic microorganisms


substance that causes death of bacteria; primarily penicillins & cephalosporins


agent that inhibits, slows, or retard the growth of bacteria; includes tetracyclines, sulfonamides & erythromycin

antiviral drugs

treat viral infections or to provide temporary immunity; acyclovir is an example; antibiotics are not effective against viruses.

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