Diseases Flashcards
Etiology: Variola virus
Enveloped
Large brick shaped to pleomorphic virion
Small linear, double-stranded DNA genome (18.6 kb)
Smallpox
Etiology: Gram-positive rod Obligate anaerobe Motile Forms endospores Produces tetanospasmin Produced by growing cells Released only when cell lyses Inhibits release of inhibitory neurotransmitters
Clostridium Tetani (tetanus)
Etiology: Morphology: Gram-negative, non-endospore forming bacilli In the family Enterobacteriaceae Characteristics Facultative anaerobe Cannot grow well at temperatures > 44.5oC Tolerant of pH 4 to 5 Resistant to many antibiotics Sensitive to irradiation
Escherichia coli
Etiology: Acid-fast bacillus
Has an unusual, waxy coating on the cell surface(primarily mycolic acid)
Nonmotile
Obligate aerobe
Facultative intracellular parasite (esp. macrophages)
Slow Generation Time: 15 to 20 hours
Mycobacterium tuberculosis
Etiology: Crescent-shaped protozoan
Member of the Apicomplexa
Obligate intracellular parasite
Multiplies within host cells
Toxoplasma gondii
Reservoir: cats
Toxoplasma gondii
Etiology: Primarily four species P. falciparum P. vivax P. ovale P. malariae P. knowlesi, is a simian malaria and causes zoonotic malaria in humans
Malaria
Etiology: Flagellated protozoa
Two morphological forms: trophozites and cysts (infective form)
After ingestion, excystation releases trophozites
Attach to mucosal surface of duodenum and jejunum
Cysts form in small intestine
Giardia intestinalis (also known as G. lamblia and G. duodenalis)
ETIOLOGY: Pleomorphic
Gram-negative
Facultative anaerobic
Coccobacillus
Yersinia pestis (black plague)
Name for Cave disease, spelunker lung, or ohio valley disease
histopasma capsulatum
name for athlete foot?
tineas
Name for Giardia
Gardia intestinalis
Name for beaver fever
gardia intestinalis
name for the plague
yersina pestic
name for tuberculosis
mycobacterium tuberculosis
