bacteria
what is the definition of bacteria
Can be defined as single called organisms lacking a nucleus and made of simple structures.
what is the definition of rickettsias
Group of bacteria that are obligate intracellular parasites transmitted by arthropod vectors from the host to the reservoir
What is the definition of virus
Nonliving, metabolically inert infectious agents
What is the definition of Fungi
Yeast- single celled fungi that reproduce by budding;
Molds - multicelled fungi often 'fuzzy' due to areal hyphe.
What is the definition of Protozoa
Single celled microscopic organisms; most are parasitic in nature
what are the characteristics of bacteria
Prokaryotes having a cell wall and cell membrane. Prokaryotes are single celled and have no central nucleus.
what are the characteristics of rickettsias
Prokaryotes; often look like gram negative bacteria inside WBCs; about 0.8-2.0 microns in size
What are the characteristics of Virus
Ultra microscopic in size; made up of genetic material, protein capsid and some have bilipid envelope
What are the characteristics of fungi
Yeast - able to convert sugar to COz and alcohol;
Molds - asexual and sexual reproduction they have hyphe
what are the characteristics of protozoa
Eukaryotic; some have flagella or cilia to facilitate movement; each species has a specific life cycle;reproduction can be sexual or asexual
i What is the mode of transmission of bacteria
fecal-oral, contact, droplet, airborne, blood and sexual contact.
what is the mode of transmission for rickettsias
Often a vector like a flea, tick, louse or mite passing bacteria by a bite
what is the mode of transmission for viruses
Fecal/oral, contact, droplet, airborne,
blood & sexual contact
what is the mode of transmission for fungi
Contact, airborne, blood & environmental sources
what is the mode of transmission for protozoa
Fecal/Oral, contact, blood & vectors
What diseases are caused by bacteria
Streptococcus pyogenes, E. Coli, Shigella, Salmonella and Mycobacterium Tuberculosis
What diseases are caused by rickettsias
Rocky Mountain Spotted Fever, Q fever, Typhus
What diseases are caused by viruses
Influenza, colds, hepatitis, cancer,
AIDS, chicken pox
what diseases are caused by fungi
Thrush, swimmers ear, athlete's foot, ringworm, histoplasmosis
what diseases are caused by protozoa
Malaria, traveler's diarrhea, trichamoniasis,
what is the identification of Bacteria
Culture on agar media, gram stain, some molecular tests available
what is the identification of rickettsias
Antibody testing, immune-fluorescence
(IFA), growth on special media
what is the identification of viruses
PCR & other molecular methods, cell culture, IFA
what is the identification of fungi
Direct examination, culture on media, PCR or molecular
What is the identification of protozoa
Ova & parasite exam to include slides of fecal concentration and different stains, some molecular or antibody methods.