4. Other Infectious Microbes
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Transcript 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