front 1 Urinary Tract Infections Disease (E. coli) | back 1 -
Causative organism: Escherichia coli
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Mode of Transmission: opportunism: transfer from GI
tract
(community-acquired) or environment or GI tract (via
catheter) -
Virulence Factors: Adhesins, motility
-
Culture/Diagnosis: usually culture-based;
antimicrobial susceptibilities always
checked -
Prevention: hygiene practices; in case of CA-UTIs,
limit catheter usage
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Treatment: Usually nitrofurantoin
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Signs and Symptoms: typically present with dysuria
(burning urination), urinary frequency and urgency, suprapubic pain,
and cloudy or foul-smelling urine; if the infection ascends to the
kidneys, it can cause flank pain, fever, and nausea/vomiting
(pyelonephritis).
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front 2 Urinary Tract Infections Disease (Staph) | back 2 -
Causative organism: Staphylococcus
saprophyticus
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Mode of Transmission: opportunism: transfer from GI
tract
(community-acquired) or environment or GI tract (via
catheter) -
Virulence Factors: N/A
-
Culture/Diagnosis: usually culture-based;
antimicrobial susceptibilities always
checked -
Prevention: hygiene practices; in case of CA-UTIs,
limit catheter usage
-
Treatment: Usually nitrofurantoin
-
Signs and Symptoms: typically present with dysuria
(burning urination), urinary frequency and urgency, suprapubic pain,
and sometimes hematuria; symptoms are similar to other UTIs and may
occasionally be accompanied by mild fever if the infection
ascends.
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front 3 Urinary Tract Infections Disease (Entercoccus) | back 3 -
Causative organism: Enterococcus
-
Mode of Transmission: opportunism: transfer from GI
tract
(community-acquired) or environment or GI tract (via
catheter) -
Virulence Factors: N/A
-
Culture/Diagnosis: usually culture-based;
antimicrobial susceptibilities always
checked -
Prevention: hygiene practices; in case of CA-UTIs,
limit catheter usage
-
Treatment: Based on susceptibility testing;
vancomycin-resistant, Enterococcus is in Serious Threat category in
CDC, and Antibiotic Resistance Report
-
Signs and Symptoms: typically present with dysuria
(burning urination), urinary frequency and urgency, suprapubic pain,
and cloudy or foul-smelling urine; in more severe or complicated
cases, fever and flank pain may occur if the infection spreads to
the kidneys (pyelonephritis).
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| back 4 -
Causative organism: Leptospira interrogans
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Mode of Transmission: Vehicle: contaminated soil or
water
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Virulence Factors: Adhesins, invasion
proteins
-
Culture/Diagnosis: Slide agglutination test of
patient’s blood for
antibodies: in the United States, CDC will
culture specimens -
Prevention: Avoiding contaminated vehicles
-
Treatment: Doxycycline, penicillin G, or
ceftriaxone
-
Signs and Symptoms:
- Leptospirosis
phase:
• sudden high fever, chills, headache, muscle
aches, conjunctivitis, and vomiting - Immune
phase:
• Mild fever, headache due to leptospiral
meningitis • Weil’s syndrome: kidney invasion, hepatic disease,
jaundice, anemia, and neurological disturbances
- Long-term disability and death can result
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| back 5 -
Causative organism: Schistosoma haematobium
-
Mode of Transmission: Vehicle: contaminated
water
-
Virulence Factors: Antigenic “cloaking,” induction
of granulomatous
response -
Culture/Diagnosis: Identification of eggs in urine,
PCR methods
-
Prevention: Avoiding contaminated vehicles
-
Treatment: Praziquantel
-
Signs and Symptoms: Itchiness in the area where the
helminth enters the
body, Fever, chills, diarrhea, and
cough • Urinary tract symptoms occur at a later date and can
cause chronic infection |
| back 6 -
Causative organism: Candida albicans
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Mode of Transmission: Opportunism
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Virulence Factors: N/A
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Culture/Diagnosis: Wet prep or Gram stain
-
Prevention: N/A
-
Treatment: Topical or oral azole drugs, some
over-the-counter drugs
-
Signs and Symptoms: Inflammation of the vagina,
characterized by some
degree of vaginal itching, burning, and
White, curd-like discharge |
front 7 Vaginitis (Trichomoniasis) [Most common nonviral sexually transmitted disease] | back 7 -
Causative organism: Trichomonas vaginalis
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Mode of Transmission: Direct contact (STI)
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Virulence Factors: N/A
-
Culture/Diagnosis: Protozoa seen on Pap smear or
Gram stain; culture is the
gold standard -
Prevention: Barrier use during intercourse
-
Treatment: Metronidazole, tinidazole
-
Signs and Symptoms: Inflammation of the vagina,
characterized by some
degree of vaginal itching, burning, and
discharge may be greenish in women but men seldom have symptoms and
many cases are asymptomatic |
| back 8 -
Causative organism: Mixed infection of Gardnerella
vaginalis, Atopobium, and
Mobiluncus -
Mode of Transmission: Opportunism or STI
-
Virulence Factors: N/A
-
Culture/Diagnosis: Visual exam of vagina or clue
cells seen in Pap smear or other smear
-
Prevention: N/A
-
Treatment: Metronidazole or clindamycin
-
Signs and Symptoms: Does not induce inflammation in
the vagina
• Produces discharge with a fishy odor, and itching
is common, Can lead to PID, infertility, and ectopic
pregnancies • Not sexually transmitted, but more common in
sexually active women |
| back 9 -
Causative organism: GI tract biota
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Mode of Transmission: Endogenous transfer from GI
tract; otherwise unknown
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Virulence Factors: Various
-
Culture/Diagnosis: Digital rectal exam to examine
prostate; culture of urine or semen
-
Prevention: None
-
Treatment: Antibiotics, muscle relaxers, alpha
blockers
-
Signs and Symptoms: Pain in the groin and lower
back, Frequent urge to urinate, Difficulty urinating, Blood in the
urine, and Painful ejaculation
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| back 10 -
Causative organism: Neisseria gonorrhoeae
-
Mode of Transmission: Direct contact (STI), also
vertical
-
Virulence Factors: Fimbrial adhesins, antigenic
variation, IgA protease, membrane blebs/endotoxin
-
Culture/Diagnosis: Gram stain in males, rapid tests
(PCR, ELISA) for females, culture on Thayer-Martin agar
-
Prevention: Avoid contact; condom use
-
Treatment: Coinfection by gonorrhea and Chlamydia
should be assumed; treat
with ceftriaxone + azithromycin;
antibiotic-resistant strains on Urgent Threat list from CDC -
Signs and Symptoms:
- Males: urethritis,
painful urination, yellowish discharges,
many cases
asymptomatic • Females: mucopurulent or bloody vaginal
discharge, painful urination |
| back 11 -
Causative organism: Chlamydia trachomatis
-
Mode of Transmission: Direct contact (STI),
vertical
-
Virulence Factors: Intracellular growth resulting
in avoiding immune system and cytokine release, unusual cell wall
preventing phagolysosome fusion
-
Culture/Diagnosis: PCR or ELISA, can be followed by
cell culture
-
Prevention: Avoid contact; condom use
-
Treatment: Coinfection by Chlamydia and gonorrhea
should be assumed; treat with doxycycline or azithromycin
-
Signs and Symptoms:
- Males: discharge and
painful urination
• Females: cervicitis, discharge,
salpingitis, and PID • Up to 75% of Chlamydia infections are
asymptomatic |
| back 12 -
Causative organism: Treponema pallidum
-
Mode of Transmission: Direct contact and
vertical
-
Virulence Factors: Lipoproteins
-
Culture/Diagnosis: Direct tests
(immunofluorescence, dark-field microscopy),
blood tests for
treponemal and nontreponemal antibodies, PCR -
Prevention: Antibiotic treatment of all possible
contacts, avoiding contact
-
Treatment: Penicillin G
-
Signs and Symptoms: progresses in stages: primary
stage causes a painless chancre at the infection site; secondary
stage includes a widespread rash (often on palms/soles), fever, and
lymphadenopathy; latent stage is asymptomatic; and tertiary stage
can cause severe neurologic, cardiovascular, and gummatous tissue
damage if untreated.
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Effects on Fetus: Congenital syphilis
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| back 13 -
Causative organism: Haemophilus ducreyi
-
Mode of Transmission: Direct contact (vertical
transmission not documented)
-
Virulence Factors: Hemolysin (exotoxin)
-
Culture/Diagnosis: Rule out other ulcer
diseases
-
Prevention: Avoiding contact
-
Treatment: Ceftriaxone or azithromycin
-
Signs and Symptoms: causes painful, soft genital
ulcers with ragged edges, often accompanied by tender, swollen
inguinal lymph nodes that may form abscesses (buboes). Painful
chancre in men and often unnoticed in women
-
Effects on Fetus: None
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| back 14 -
Causative organism: Herpes simplex 1 and 2
-
Mode of Transmission: Direct contact, vertical
-
Virulence Factors: Latency
-
Culture/Diagnosis: Clinical presentation, PCR, Ab
tests, growth of virus in cell
culture -
Prevention: Avoiding contact, antivirals can reduce
recurrences
-
Treatment: Acyclovir and derivatives
-
Signs and Symptoms: causes painful, fluid-filled
vesicles or blisters on the mouth or genitals that rupture into
ulcers, often preceded by tingling or burning; the virus remains
latent in nerve ganglia and can reactivate causing recurrent
outbreaks.
-
Effects on Fetus: Blindness, disseminated herpes
infection
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| back 15 -
Causative organism: Human papillomaviruses
-
Mode of Transmission: Direct contact (STI), also
autoinoculation, indirect contact
-
Virulence Factors: Oncogenes (in the case of
malignant types of HPV)
-
Culture/Diagnosis: PCR tests for certain HPV types,
clinical diagnosis; Pap
smear -
Prevention: Vaccine available; avoid direct contact
and prevent cancer by
screening cervix -
Treatment: Warts or precancerous tissue can be
removed; virus not treatable
-
Signs and Symptoms:
- Females: growths on
the vulva and in and around the vagina as well as silent infections
of the cervix
• Males: warts on the penis and scrotum •
Both sexes: warts in or on the anus, and the skin around the groin
between the thigh and pelvis • Condyloma acuminata: branching,
cauliflower-like masses -
Effects on Fetus: May cause laryngeal warts
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| back 16 -
Causative organism: Poxvirus, sometimes called the
molluscum contagiosum
virus (MCV) -
Mode of Transmission: Direct contact (STI), also
indirect and autoinoculation
-
Virulence Factors: N/A
-
Culture/Diagnosis: Clinical diagnosis, also
histology, PCR
-
Prevention: Avoid direct contact
-
Treatment: Warts can be removed; virus not
treatable
-
Signs and Symptoms: Causes wart-like growths on the
mucous membranes or
the skin of the genital area -
Effects on Fetus: N/A
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front 17 Group B Streptococcus Colonization Disease (Neonatal Disease) | back 17 -
Causative organism: Group B Streptococcus
-
Mode of Transmission: Vertical
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Virulence Factors: N/A
-
Culture/Diagnosis: Culture of mother’s genital
tract
-
Prevention/
Treatment: Treat mother with penicillin/
ampicillin
-
Signs and Symptoms: often asymptomatic in adults,
especially in the gastrointestinal and genitourinary tracts, but can
cause serious neonatal infections (sepsis, pneumonia, meningitis)
during childbirth if transmitted from mother to infant; in adults it
may rarely cause UTI, bacteremia, or skin/soft tissue infections in
immunocompromised patients.
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