Bacteria
both
Is bacteria beneficial or harmful?
harmful
Is rickettsia's beneficial or harmful?
harmful to humans
Is a virus beneficial or harmful?
Both
diamorphic- those fungi that exist in yeast state at body temp & mold state at room temp
Is fungi beneficial or harmful?
harmful or non-parasitic
Is protozoa beneficial or harmful?
prokaryotes, having a cell wall & cell membrane - three basic shapes
What are bacteria characteristics?
prokaryotes; often look like gram negative bacteria inside WBC's; about 0.8-2.0 microns in size
What are rickettsia characteristics?
ultra-microscopic in size; made up of genetic material, protein capsid and some have bilipid envelope
What are virus characteristics?
yeast- able to convert sugar to CO2 and alcohol
molds- asexual and sexual reproduction, they have hyphe
What are fungi characteristics?
eukaryotic; some have flagella or cilia to facilitate movement; each species has a specific life cycle; reproduction can be sexual or asexual
What are protozoa characteristics?
fecal/oral, contact, droplet, air-borne, blood & sexual contact
What is the mode of transmission for bacteria?
often a vector like a flea, tick, louse, or mite passing bacteria by a bite
What is the mode of transmission for rickettsia?
fecal/oral, contact, droplet, airborne, blood & sexual contact
What is the mode of transmission of a virus?
contact, airborne, blood & environmental sources
What is the mode of transmission of fungi?
culture on agar media, gram stain, some molecular tests available
What is the identification of bacteria?
What is the identification for rickettsia?
PCR & other molecular methods, cell culture, IFA
direct examination, culture on media, PCR or molecular
What is the identification of a fungi?
ova & parasite exam to include slides of fecal concentration and different stains, some molecular or antibody methods
What is the identification of protozoa?
a single-celled organism, lacking a nucleus and made of simple structures
What is bacteria?
group of bacteria that are obligate intracellular parasites transmitted by arthropod vectors from the host to the reservoir
What is rickettsia?
a nonliving metabolically inert infectious agent
What is a virus?
yeast- single celled fungi that reproduce by budding
molds- multicellular fungi often "fuzzy" due to areal hyphe
single celled microscopic organisms: most are parasitic in nature
What is protozoa?