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86 Cards in this Set
- Front
- Back
What type of virus is HSV?
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- herpes simplex virus
- DNA virus - herpesvirus family |
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What are the two forms of HSV?
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HSV 1 - spread predominantly through oral (above waist)
HSV 2 - predominantly through sexual contact (lesions below waist) |
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How does spread of HSV to an uninfected host occur?
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- during periods of asymptomatic viral shedding
- symptomatic active lesions |
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What is the usual incubation period of HSV?
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3 - 9 days
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Define PRIMARY INFECTION of HSV?
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- initial exposure of an individual who has not been previously exposed to the disease
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Most primary infections of HSV occur when?
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childhood - subclinical - few result in clinical disease
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What is the most common form of symptomatic primary HSV?
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acute herpetic gingivostomatitis
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Most cases of acute herpetic gingivostomatitis arise when?
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6 months to 5 years
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Explain why HSV is "neurotropic"?
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it is transported via nerves to sensory ganglia, the TRIGEMINAL GANGLION to reside in a latent form
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How is diagnosis of HSV usually made?
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clinical.
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Which treatment mode is good for HSV and in which time frame?
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If identified within 2-3 days then ACYCLOVIR is helpful.
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What is SECONDARY INFECTION of HSV?
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reactivation of the latent virus, causing vesiculo-ulcerative eruption on infected epithelial surface
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WHat are PRODROMAL symptoms of HSV?
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- tingling
- burning - itching - pain in site where lesions will appear |
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Where do most secondary lesions of HSV appear?
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vermillion border and surrounding skin
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What is the name for the most common form of secondary infection of HSV?
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- recurrent herpes labialis
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Intraoral occurences of HSV are almost always restricted to what types of surfaces?
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keratinized mucosa that is bound to bone
- attached gingiva - hard palate |
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What is HERPETIC WHITLOW?
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primary or secondary HSV infection involving the finger.
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What is the more common layman's term for VARICELLA?
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Chickenpox
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How is VZV spread?
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- direct contact
- airborne droplets |
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Describe the skin lesions of VZV?
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intensely pruritic vesicles
- "dew-drops on rose petals" |
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Describe the oral lesions of VZV:
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- few 1-2 mm shallow oral ulcers, generally not as symptomatic as cutaneous lesions
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How is diagnosis of VZV made?
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- history of exposure in past 3 weeks
- clinical signs |
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What is the treatment for VZV?
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- supportive care
- acyclovir for adults, neonates, immunocompromised, and patients with progressive illness |
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Define Herpes zoster?
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- herpes zoster is the recurrent form of varicella infection.
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What is the laymans term for Herpes Zoster?
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- shingles
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What is the reason that VZV can recur?
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after initial infection with VZV the virus is transported up the sensory nerves where it resides in a latent form in the DORSAL SPINAL GANGLIA.
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Describe oral lesions of herpes zoster?
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Oral lesions occur with trigeminal nerve involvement and are sharply and distinctively unilateral along nerve distribution - STOP AT MIDLINE
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What can be a cause of significant morbidity with herpes zoster?
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ocular involvement may lead to permanent blindness
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Infectious mononucleosis is caused by what virus?
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Epstein-Barr Virus
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How is EBV transmitted?
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Through Saliva - sharing straws or kissing in adults
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What is the difference between getting EBV in childhood vs adolescent / adult?
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Childhood - usually asymptomatic
Adol/Adult - develops into infectious mononucleosis |
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What are some signs of Mono?
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- lymphadenopathy
- oropharyngeal tonsillar enlargement - oral lesions: lymphoid enlargement, NUG, petechiae on palate |
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What is the treatment for MONO?
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- IM resolves within 4-6 weeks. No specific treatment other than bed rest.
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What are the most prominent members of the PARAMYXOVIRUS FAMILY?
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Measles
Mumps |
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How is MEASLES spread?
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- airborne droplets
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Define "Kopliks spots"
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in Measles, small erythematous macules with white necrotic centers appearing on buccal mucosa
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Koplik's spots in Measles generally precede skin rash by how long?
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1-2 days
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During what period is the MEASLES patient contagious?
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- 2 days prior to becoming symptomatic
- 4 days after rash develops |
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What are some possible complications of MEASLES?
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- encephalitis
- viral pneumonia |
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When is the MMR vaccine recommended?
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- 12-15 months first dose
- 1 months second dosse |
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What is HAND FOOT AND MOUTH disease?
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Highly contagious systemic infection usually caused by coxsackievirus A.
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How is HFM disease transmitted?
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inhalation of airborne droplets or by contact with saliva containing virus
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HFM disease most commonly occurs in what demographic>?
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children 1-5 years old
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Describe the oral lesions of hand foot mouth disease:
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shallow ulcers 2-7 mm in diameter (1-30) on buccal mucosa, labial mucosa and tongue
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Describe the skin lesions of hand foot mouth:
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1-3 mm erythematous macules that may develop a central vesicle
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What is the treatment for hand foot mouth:
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self-limiting. Resolves within 7-10 days
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Define HERPANGINA:
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enterovirus infection caused by any one of several strains of coxsackievirus A or B or echovirus
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Describe the lesions of Herpangina:
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acute onset of sore throat, fever, 1-2mm shallow oral ulcers (2-6) localized to posterior soft palate/tonsillar pillar region
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What is ACUTE LYMPHONODULAR PHARYNGITIS?
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localized infection of coxsackievirus A
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What is ACUTE LYMPHONODULAR PHARYNGITIS characterized by?
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sore throat, fever, and mild headache
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What is the clinical features of acute lymphonodular pharyngitis?
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low numbers (1-5 ) of yellow to dark pink papules develop on soft palate or tonsillar pillars
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What diseases are related to HERPES SIMPLEX VIRUS?
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- primary herpes gingivostomatitis
- secondary herpes infections (recurrent herpes labialis) - genital herpes |
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What diseases are related to VARICELLA ZOSTER VIRUS?
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- chickenpox
- shingles |
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What disease are related to EPSTEIN BARR VIRUS?
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- mononucleosis (mono)
- Burkitt's lymphoma - Nasopharyngeal carcinoma - hairy leukoplakia |
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What disease are related to HUMAN PAPILLOMAVIRUSES?
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- oral papilloma / warts
- condyloma acuminatum - focal epithelial hyperplasia |
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What diseases are related to COXSACKIEVIRUSES?
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- herpangina
- hand foot mouth disease - acute lymphonodular pharyngitis |
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This patient has a history of cold sores appearing often on the lips. They present to your office with this condition. What is your diagnosis?
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Herpetic whitlow
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This patient has a history of cold sores appearing often on the lips. They present to your office with this condition. What is your diagnosis?
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Herpetic whitlow
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This child present to you with ulcerations on the oral mucosa and surrounding areas. They are very painful and some of the blisters have already ruptured. What is your diagnosis?
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Acute herpetic gingivostomatitis (Primary Herpes Simplex Infection)
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This child present to you with ulcerations on the oral mucosa and surrounding areas. They are very painful and some of the blisters have already ruptured. What is your diagnosis?
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Acute herpetic gingivostomatitis (Primary Herpes Simplex Infection)
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This child present to you with ulcerations on the oral mucosa and surrounding areas. They are very painful and some of the blisters have already ruptured. What is your diagnosis?
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Acute herpetic gingivostomatitis (Primary Herpes Simplex Infection)
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This child present to you with ulcerations on the oral mucosa and surrounding areas. They are very painful and some of the blisters have already ruptured. What is your diagnosis?
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Acute herpetic gingivostomatitis (Primary Herpes Simplex Infection)
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This child present to you with ulcerations on the oral mucosa and surrounding areas. They are very painful and some of the blisters have already ruptured. What is your diagnosis?
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Acute herpetic gingivostomatitis (Primary Herpes Simplex Infection)
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This adult presents with a "cold sore" on the lip. They say that this happens once or twice a year. What is your diagnosis?
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Recurrent Herpes Labialis
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This adult presents with a "cold sore" on the lip. They say that this happens once or twice a year. What do you tell the patient?
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That the lesion should go away within 7-10 days. Can prescribe analgesics for the pain. Acyclovir if the lesion has only been for 2-3 days active.
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What is this lesion?
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Recurrent Herpes Labialis
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What is this lesion?
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Recurrent Herpes Labialis
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What virus is this child infected with?
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Varicella zoster (Chicken pox)
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What virus is this child infected with?
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Varicella zoster (Chicken pox)
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What virus is this child infected with?
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Varicella zoster (Chicken pox)
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What virus is this child infected with?
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Varicella zoster (Chicken pox)
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This elderly man has a positive history for chickenpox in his childhood. He presents with this severe condition strangely following unilateral trigeminal distribution. What is your diagnosis?
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Herpes Zoster (Shingles)
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These are known as "Koplik's Spots". Which condition are they associated with? Why are they significant?
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MEASLES
They precede the rash by 2 days. |
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What is the percentage of patients sustaining a needle stick from a documented HIV-positive person become infected with HIV?
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0.3%
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Which ONE of the following is the most appropriate test for diagnosing acute HIV infection during acute retroviral syndrome?
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HIV PCR
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Diagnosis of ORAL CANDIDIASIS is most appropriately made by visual appearance plus which ONE of the following confirmatory lab tests?
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Gram stain
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A 27 year old male IDU (Injection Drug USer) presents with multiple smooth, papular, facial lesions, 2-4mm in diameter with a central umbilicus. What is the diagnosis?
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Molluscum contagiosum
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AZT and 3YC are antiretroviral drugs which work by which ONE of the following mechanisms?
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Inhibition of REVERSE TRANSCRIPTASE and DNA CHAIN TERMINATION
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Efavirenz and Nevirapine are antiretroviral drugs which work by which mechanism?
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Inhibition of reverse transcriptase alone
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Nelfinavir and Lopinavir are antiretroviral drugs which work by which mechanism?
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Inhibiton of protease
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Saquinavir and Atazanavir are antiretroviral drugs which work by which mechanism?
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Inhibition of protease
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Enfuvirtide is an antiretroviral drug which works by which mechanism?
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Inhibition of HIV/target cell fusion
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Raltegravir is an antiretroviral drug which works by what mechanism?
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Inhibition of integrase
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Maraviroc is an antiretroviral drug which works by what mechanism?
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Inhibition of chemokine receptor CCR5
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When should POST EXPOSURE PROPHYLAXIS begin?
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Within 2 hours of exposure
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List the AIDS-defining illnesses:
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- esophageal candidiasis
- oral kaposi's sarcoma - pneumocystis pneumonia - extrapulmonary TB |