-
the smallest free living bacteria known
Mycoplasm sp.
-
they have no cell wall
Mycoplasm sp.
-
causes Mycoplasma sp. to be flexible & pleomorphic
no cell wall
-
the colonies under a dissecting microscope have a "fried-egg" shape
Mycoplasma sp.
-
causes primary atypical pneumonia
Mycoplasma pneumoniae
-
transmitted via droplet spray or contact with contaminated respiratory secretions
Mycoplasma pneumoniae
-
tends to affect school-aged children and young adults
rarely adults over the age of 50
Mycoplasma pneumoniae
-
these are urethral normal flora organisms of sexually active humans
Mycoplasma hominis, urealyticum
-
may cause several different infections of the reproductive systems
Mycoplasma hominis, urealyticum
-
similar to a gram-negative coccobacillus
rickettsia
-
are obligate intracellular parasites of man and certain arthropod vectors
rickettsia
-
they are small in size and are barely visible under a normal light microscope
rickettsia
-
rickettsia lack certain external structures associated with other bacteria
- 1. flagella
- 2. pili
- 3. capsules
- 4. spores
-
rickettsia cause several diseases that have as characteristics
- 1. high fever
- 2. skin rash
-
the diseases of _____________ organisms are difficult to diagnose because the symptoms are similar to many other diseases...and...the organisms are dangerous to work with
rickerrsial
-
it has been found that the genus of bacteria ___________ has an antigen in its cells that is also present in _________
-
Proteus is less fdangerous to work with, a diagnosis of a rickettsial disease can be performed by testing for the presence of the shared antigen
Weil-Felix test
-
caused by Rickettsia prowazekii
epidemic typhus fever (louse-borne typhus fever)
-
transmitted from host to host via the human body louse
- Rickettsia prowazekii
- epidemic typhus fever (louse-borne typhus fever)
-
a louse takes a blood meal from a person with typhus fever
the rickettsia line the intestinal lining of the louse
when the louse feeds again on another human host, it defecates
leaving the skin contaminated with rickettsia
- Rickettsia prowazekii
- epidemic typhus fever (louse-borne typhus fever)
-
the bite itches and the wound is infected when the organism is ground in by scratching
- Rickettsia prowazekii
- epidemic typhus fever (louse-borne typhus fever)
-
characterized by a mental dullness or stupor caused by the high fever
- Rickettsia prowazekii
- epidemic typhus fever (louse-borne typhus fever)
-
symptoms include:
1. unbearable headache
2. chills
3. muscle ache
4. rash over the entire body EXCEPT:
a. face
b. palms pf hands
c. soles of feet
- Rickettsia prowazekii
- epidemic typhus fever (louse-borne typhus fever)
-
caused by Rickettsia typhi
- Endemic Tyohus fever
- (Flea-borne typhus, Murine typhus)
-
transmitted from host to host via the rat flea
because the disease is endemic to rats and mice
- Rickettsia typhi
- Endemic Tyohus fever
- (Flea-borne typhus, Murine typhus)
-
the disease is similar to Epidemic typhus but is much less severe and rarely causes death
- Rickettsia typhi
- Endemic Tyohus fever
- (Flea-borne typhus, Murine typhus)
-
caused by Rickettsia rickettsii
Rocky Mountain Spotted Fever
-
transmitted from host to host via a tick
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
the tick becomes infected by biting a diseased animal or by passage of the disease from a mother tick to her offspring
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
children are the most likely to contract the disease
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
adults are more likely to die
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
symptoms include:
1. flu-like aches & pains
2. headache
3. light sensitivity
4. chills
5. confusion
6. several days of high fever
7. a characteristic reddish to black rash
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
starts on the extremities
particularly on palms of hands and the soles of feet
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
the rash signifies that the organism is multiplying in and destroying the endothelial cells of capillaries
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
allows for the escape of RBC into the surrounding tissues causing the rash
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
a common complication is that the disease cannot be diagnosed at the onset because the symptoms resemble those of many other diseases
delayed treatment
- Rickettsia rickettsii
- Rocky Mountain Spotted Fever
-
caused by Rickettsia tsutsugamushi (orientia)
- Scrub Typhus Fever
- (Tsutsugamushi disease)
-
transmitted from host to host via a mite similar to a chigger
- Rickettsia tsutsugamushi (orientia)
- Scrub Typhus Fever
- (Tsutsugamushi disease)
-
symptoms include:
1. severe headache
2. chills
3. fever
4. characteristic rash called an eschar
- Rickettsia tsutsugamushi (orientia)
- Scrub Typhus Fever
- (Tsutsugamushi disease)
-
-
a sloughing off of the skin
an eschar
-
a rickettsial disease caused by coxiella burnetti
Q fever
-
transmitted from host to host in three ways:
1. by inhallation
2. by ingestion of raw milk
3. by the bite of several types of ticks
-
because the organism is highly resistant to heat, light, and drying
- by inhallation
- Coxiella burnetti
- Q fever
-
does NOT REQUIRE an arthropod vector like other rickettsial diseases
by ingestion of raw milk
-
a gram-negative coccobacillus
chlamydia
-
obligate intracellular parasites
chlamydia
-
have a complex reproduction process that forms the infectious agents called elementary bodies
chlamydia
-
also know as Ornithosis, parrot fever, or chlamydial pneumonia
-
caused by Chlamydia psittaci
-
transmitted via inhalation of dust from the feces of virtually any type of bird
1. wildbirds
2. farm birds
3. pets
-
causes an influenza-like infection with:
1. headache
2. fever
3. cough
-
can be life-threatening with symptoms of:
1. persistent high fever
2. mental confusion
3. SOB
-
known as inclusive conjunctivitis
-
-
transmitted by direct contact with contaminated fingers, towels, or clothing
-
the word trachoma means
rough
-
a description of granular, pebble-like texture of the infected conjunctiva
rough
-
the inflammation process results in scarring of the cornea causing blindness
-
this is the number one preventable cause of blindness worldwide
-
climatic bubo
- Lymphogranuloma venereum
- chlamydia
-
VD
- Lymphogranuloma venereum
- chlamydia
-
caused by Chlamydia trachomatis
- Lymphogranuloma venereum
- chlamydia
-
first manifests as a small lesion on the genitals
- Lymphogranuloma venereum
- chlamydia
-
second, moves to the regional lymph nodes of the inguinal area
- Lymphogranuloma venereum
- chlamydia
-
third, causes the nodes to become swollen, inflamed, & necrotic
- Lymphogranuloma venereum
- chlamydia
-
lastly, will eventually disfigure the external genitalia because of lymphatic obstruction
- Lymphogranuloma venereum
- chlamydia
-
the most frequent cause of gonorrhea negative urethritis
- NGU (non-gonococcal urethritis)
- NSU (non-specific urethritis)
- chlamydia
-
an STD that produces a chronic urethral discharge and inflammation for up to a year
- NGU (non-gonococcal urethritis)
- NSU (non-specific urethritis)
- chlamydia
-
Will disfigure the external genitalia
- Lymphogranuloma venereum
- chlamydia
-
Which is more severe?... ... . Epidemic or Endemic typhus fever
Epidemic typhus fever
-
The most frequent cause of gonorrhea negative urethritis
- NGU (non-gonococcal urethritis)
- NSU (non-specific urethritis)
- chlamydia
-
Sloughing off of the skin
eschar
-
Rickettsia line the intestinal lining of the louse
- Epidemic Typhus fever
- (Louse-borne typhus fever)
-
-
Scarring of the cornea
- inclusion conjuctivitis
- Chlamydia trachomatis
-
Louse defecates when eating
- Epidemic Typhus fever
- (Louse-borne typhus fever)
-
Lack flagella, pili, capsules, and spores
Rickettsia
-
Number one preventable cause of blindness worldwide
- Chlamyda trachomatis
- inclusion conjunctivitis
-
Starts as small lesions on the genitals and moves to regional lymph nodes
- lymphogranuloma venereum
- climatic bubo
- chlamydia trachomatis
-
Causes an influenza-like infection
- Psittacosis
- Chlamydia psittaci
-
A rickettsial disease caused by a genus other than Rickettsia
-
Granular, pebble-like texture of the conjunctiva
trachoma
-
A venereal disease
Lymphogranuloma venereum
-
Causes a rash called an eschar
- Scrub Typhus Fever (Tsutsugamushi disease)
- Rickettsia tsutsugamushi (orientia)
-
Bite wound itches and we grind the organism into our skin by scratching
- Epidemic Typhus Fever (Louse-borne typhus fever)
- Rickettsia prowazekii
-
A rash that covers the entire body EXCEPT the face, palms of the hands, and soles of the feet
- Epidemic Typhus Fever (Louse-borne typhus fever)
- Rickettsia prowazekii
-
A characteristic reddish to black rash
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
-
Can be diagnosed by the Weil-Felix test
-
Has a cellular antigen similar to that of Proteus?
Rickettsia
-
No cellwall
Mycoplasma sp.
-
Smallest "free-living" bacteria known.
Mycoplasma sp.
-
Fried-egg shape of colonies
Mycoplasma sp.
-
Flexible and pleomorphic
Mycoplasma sp.
-
Rarely atfects adults over 50... usually school-aged children and young adults
Mycoplasma pneumoniae
-
Urethral normal flora organism of sexually active humans
Mycoplasma hominis, urealyticum
-
Infectious agents are the elementary bodies
Chlamydia
-
Dust of bird feces
- Psittacosis
- Chlamydia psittaci
-
Characterized by mental dullness and a stupor caused by the high fever
- Epidemic Typhus fever (Louse-borne typhus fever)
- Rickettsia prowazekii
-
Disease is endemic to rats and mice
- Endemic Typhus fever (Flea-borne typhus, Murine typhus)
- Rickettsia typhi
-
A rash that covers the entire body PARTICULARLY the palms of the hands and soles of the feet
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
-
Light sensitivity is a symptom
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
-
Destroys the endothelial cells of capillaries
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
-
Causes a chronic urethral discharge and inflammation for up to a year
-
lntermediate in size between bacteria and viruses(2)
-
Small in size and barely visible under a normal light microscope(2)
-
Children are most likely to contract it but adults are more likeiy to die
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
-
Distinctive features of the disease include a high fever and skin rash
- Rocky Mountain Spotted Fever
- Rickettsia rickettsii
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