Download 4. Other Infectious Microbes

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Other Infectious Microbes
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Fungi

Out of thousands of species of fungus only
about 50 cause disease.

Diseases caused by fungi are called mycoses.

Usually unicellular eukaryotes (i.e.mold)
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Fungus Example: Ringworm

Infects the middle skin layers.

Caused by the fungi: Dermatophytosis

Transferred by skin to skin contact. Highly contagious!

Symptoms: Itchy, a round rash

Treatment: Antifungal creams
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Fungus Example: Candidiasis

A.K.A. Yeast infection

Caused by Candida albicans- a naturally occurring fungus.

Usually controlled by bacteria in your body.

Symptoms show when there is a lack of bacteria in the body.
(When you are on antibiotics)

Symptoms show in the GI tract or vaginal area.

A yeast infection of the
mouth is called thrushusually occurs in infants.

Treated by an
antifungal cream
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Protozoans

Unicellular eukaryotes

Less than 20 species cause disease

Usually use the body to reproduce like a
bacteria.

Some varieties can do photosynthesis and
some behave more like animal cells
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Protozoan Example: Amoebiasis
A
parasite that survives in
warm climates- especially in
places with poor sanitation.
 3,000-5,000
the US
cases per year in
 Enters
through food or
unsanitary practices—enters
through the mouth
 Divides
in the intestine
 Produces
vomiting
 Spread
ulcers, diarrhea,
through feces
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Protozoan Example: Malaria
 Caused
by plasmodium- a
 Carried
by female mosquitoes
parasite
 Infects
 Uses
liver cells
erythrocytes to reproduce
 Erythrocytes
lyse causing
infectious agent to spread
through the blood stream.
 Taken
up by mosquitoes again