📍Varicella (Chickenpox) & Herpes Zoster (Shingles):

1. What is the primary mode of transmission for chickenpox?
A) Fecal-oral route
B) Inhalation of respiratory droplets
C) Mosquito bites
D) Blood transfusion
Answer: B

2. Where does Varicella-Zoster Virus (VZV) establish latency after primary infection?
A) Liver
B) Sensory nerve ganglia
C) Spleen
D) Skin cells
Answer: B

3. Reactivation of latent VZV infection causes:
A) Measles
B) Herpes zoster (shingles)
C) Epstein-Barr virus infection
D) Hand, foot, and mouth disease
Answer: B

4. Which of the following is a characteristic clinical feature of chickenpox?
A) Petechial rash
B) Generalized vesicular rash
C) Bullous lesions
D) Maculopapular rash without vesicles
Answer: B

5. High viral titers in chickenpox are found in:
A) Blood
B) Urine
C) Vesicular fluid
D) Cerebrospinal fluid (CSF)
Answer: C

6. The initial site of VZV replication after infection is the:
A) Liver
B) Mucosa of the upper respiratory tract
C) Kidneys
D) Bone marrow
Answer: B

7. Secondary viremia in chickenpox spreads the virus to the:
A) Brain
B) Skin
C) Lungs
D) Heart
Answer: B

8. Which population is primarily affected by chickenpox?
A) Elderly adults
B) Infants under 6 months
C) Children
D) Pregnant women only
Answer: C

9. What is the risk of transmission through direct contact with chickenpox vesicles compared to respiratory droplets?
A) Higher
B) Lower
C) Equal
D) No risk
Answer: B

10. Primary infection with VZV causes:
A) Herpes zoster
B) Varicella (chickenpox)
C) Infectious mononucleosis
D) Cold sores
Answer: B

📍 Varicella (Chickenpox):

1. What is the typical incubation period for chickenpox?
A) 1–3 days
B) 10–21 days
C) 4–7 days
D) 22–30 days
Answer: B

2. The earliest symptoms of chickenpox include:
A) Rash and blisters
B) Malaise and fever
C) Severe headache
D) Joint pain
Answer: B

3. The rash in chickenpox progresses to which of the following forms?
A) Non-itchy macules
B) Fluid-filled blisters that crust over
C) Purpuric spots
D) Pustules without crusting
Answer: B

4. Where does the chickenpox rash typically appear FIRST?
A) Limbs
B) Face
C) Trunk
D) Scalp
Answer: C

5. How long does the chickenpox rash usually last?
A) 1–2 days
B) 5 days
C) 10 days
D) 3 weeks
Answer: B

6. What is the standard treatment for chickenpox in otherwise healthy children?
A) Antiviral drugs (e.g., acyclovir)
B) Antibiotics
C) Supportive care (e.g., antihistamines for itching)
D) Corticosteroids
Answer: C

7. What happens to the varicella-zoster virus (VZV) after primary infection in immunocompetent individuals?
A) It is completely eliminated by the immune system.
B) Some virions establish latency in nerve cells.
C) It persists in the liver.
D) It remains active in the bloodstream.
Answer: B

8. Herpes zoster (shingles) occurs when:
A) A new VZV infection is acquired.
B) Latent VZV reactivates due to weakened immunity.
C) Bacteria infect the skin.
D) The rash of chickenpox recurs.
Answer: B

9. Which of the following is a common complication of chickenpox in children?
A) Pneumonia
B) Secondary bacterial infection of skin lesions
C) Encephalitis
D) Myocarditis
Answer: B

10. Antiviral treatment (e.g., acyclovir) for chickenpox is typically reserved for:
A) All healthy children.
B) High-risk groups (e.g., immunocompromised patients).
C) Patients with mild fever.
D) Those with no rash.
Answer: B

📍 Herpes Zoster (Shingles) :

1. What is the primary cause of herpes zoster (shingles) reactivation?
A) New exposure to VZV
B) Weakened immunity due to aging, disease, or therapy
C) Bacterial co-infection
D) Genetic mutation of VZV
Answer: B

2. Where does VZV remain latent before reactivating as shingles?
A) Liver
B) Sensory nerve ganglia
C) Spleen
D) Skin cells
Answer: B

3. The skin lesions of herpes zoster are histologically identical to those of:
A) Measles
B) Varicella (chickenpox)
C) Impetigo
D) Scabies
Answer: B

4. Which dermatome is MOST commonly affected in herpes zoster?
A) Lumbar
B) Thoracic
C) Cervical
D) Sacral
Answer: B

5. What is the typical duration for herpes zoster skin lesions to heal?
A) 1 week
B) 2–4 weeks
C) 6 months
D) 1 year
Answer: B

6. Which symptom is characteristic of herpes zoster BEFORE the rash appears?
A) Fever
B) Pain, itching, or tingling in the affected dermatome
C) Joint swelling
D) Cough
Answer: B

7. How does reactivated VZV reach the skin to cause shingles?
A) Through the bloodstream
B) By traveling down the sensory nerve
C) Via lymphatic vessels
D) Through inhalation
Answer: B

8. Which population is at HIGHEST risk for herpes zoster?
A) Infants
B) Adults over 50 or immunocompromised individuals
C) Teenagers
D) Pregnant women
Answer: B

9. What is the main route of VZV transmission to others during a shingles outbreak?
A) Fecal-oral
B) Direct contact with vesicular fluid or respiratory secretions
C) Blood transfusion
D) Sexual contact
Answer: B

10. Which complication is unique to herpes zoster (not seen in chickenpox)?
A) Fever
B) Vesicular rash
C) Postherpetic neuralgia (chronic pain)
D) Cough
Answer: C

📍Infant Roseola (HHV-6 Infection) :

1. What virus causes roseola infantum?
A) Varicella-zoster virus (VZV)
B) Human herpesvirus 6 (HHV-6)
C) Epstein-Barr virus (EBV)
D) Cytomegalovirus (CMV)
Answer: B

2. What is the classic presentation of roseola?
A) Low-grade fever with immediate rash
B) High fever for 3 days followed by rash as fever subsides
C) Fever with sore throat
D) Fever with joint pain
Answer: B

3. How is HHV-6 primarily transmitted?
A) Fecal-oral route
B) Saliva or respiratory droplets
C) Blood transfusion
D) Mosquito bites
Answer: B

4. Where does HHV-6 replicate during primary infection?
A) Liver
B) Leukocytes and salivary glands
C) Skin cells
D) Kidney
Answer: B

5. What is a potential complication of roseola's high fever?
A) Hepatitis
B) Febrile seizure
C) Meningitis
D) Pneumonia
Answer: B

6. What type of rash appears in roseola?
A) Vesicular (blister-like)
B) Maculopapular (flat red spots with bumps)
C) Petechial (pinpoint bleeding)
D) Bullous (large blisters)
Answer: B

7. What is the standard treatment for roseola?
A) Antiviral therapy (e.g., acyclovir)
B) Supportive care (antipyretics for fever)
C) Antibiotics
D) Corticosteroids
Answer: B

8. Which age group is most affected by roseola?
A) Adolescents
B) Adults
C) Infants and toddlers (6 months–2 years)
D) Elderly
Answer: C

9. What is unique about the rash in roseola?
A) It itches intensely
B) It appears AFTER fever resolves
C) It leaves permanent scars
D) It spreads from limbs to trunk
Answer: B

10. Which diagnostic method confirms HHV-6 infection?
A) Blood culture
B) PCR (detects viral DNA)
C) Urinalysis
D) Skin biopsy
Answer: B

hid ?

Oropharyngeal in children " 2-3 weeks "
In adults " 4-5 Days "
Genital " 3 weeks "
Varicella " incubation period " 10-21 Days "
Zoster " 2-4 weeks "