Crico-Virus Test Bank Exam updated questions and accurate, detailed answers verified 100% Graded A+

Crico-Virus Test Bank Exam 2025 -2026
updated questions and accurate, detailed
answers \verified 100% \Graded A+
Porcine circovirus type 2 ✅ A. Circoviridae — smallest known DNA viruses.
belongs to which viral family?
A. Circoviridae

B. Adenoviridae

C. Parvoviridae
D. Flaviviridae

Which type of genome does ✅ A. Small, circular single-stranded DNA genome.
PCV-2 have?
A. Circular single-stranded
DNA
B. Linear double-stranded DNA

C. Segmented RNA

D. Circular RNA

Which age group is most ✅ C. Postweaning pigs are most susceptible. (1.5-4 months)
affected by PMWS?
A. Mature sows

B. Suckling piglets under 1
week
C. 5-14 week-old pigs

D. Boars over 1 year

What are the main clinical ✅ B, C, D — wasting, respiratory and enteric signs.
signs of PMWS? (Multiple
answers are correct)
A. Neurological signs

B. Dyspnea and cough

C. Diarrhea

D. Wasting and poor growth

Which diagnostic methods ✅ A, B, C, D — all can be used depending on stage of infection.
confirm PMWS? (Multiple
answers are correct)
A. PCR for PCV-2

B. Immunohistochemistry

C. Serology for antibodies

D. Virus isolation

,What is the main route of ✅ C. Spread by ingestion or inhalation of viral particles.
PCV-2 transmission?
A. Transovarial only

B. Vector-borne

C. Fecal-oral and respiratory

D. Venereal

Which co-infections ✅ A, B, C, D — co-infections worsen clinical signs.
enhance PMWS severity?
(Multiple answers are correct)
A. PRRS virus

B. Mycoplasma
hyopneumoniae
C. Swine influenza virus

D. Salmonella spp.

Which of the following ✅ A, C, D — vaccination and hygiene reduce disease.
control measures help
prevent PMWS? MCQ
A. Vaccination against PCV-2

B. Antibiotics to eliminate virus

C. Improved biosecurity

D. Reduced mixing of age
groups
Which vaccine types are used ✅ A. Commercial inactivated and subunit vaccines are widely
used.
for PCV-2?
A. Inactivated or subunit
vaccines
B. Live attenuated oral vaccines

C. Vector-based mRNA
vaccines
D. DNA vaccines
PMWS is characterized by: ✅ D. Chronic wasting and lymphadenopathy are classic signs.
A. Acute hemorrhage

B. Diarrhea only

C. CNS paralysis

D. Progressive weight loss

and enlarged lymph nodes
Mortality rate in PMWS can ✅ A. Mortality often 10-30% but morbidity can be high.
reach:
A. 10-30%

B. 60-80%

C. 5-10%

D. Over 90%

, PDNS is associated with ✅ B. PCV-2 involvement is strongly associated with PDNS.
infection by:
A. Porcine parvovirus

B. Porcine circovirus type 2

C. Swine influenza virus

D. PRRS virus

What is the proposed ✅ B. Immune complexes deposit in small vessels and glomeruli.
(hypersensitivity 3)
pathogenesis of PDNS?
A. Direct viral cytolysis

B. Immune complex-mediated
vasculitis
C. Autoimmune reaction to
feed proteins
D. Bacterial toxin damage

Which age group is most ✅ C. Older pigs typically 8-16 weeks are affected. (30-100kg from
1.5months old)
affected by PDNS?
A. Sows

B. Neonates

C. Grower and finisher pigs

D. Boars

What are the characteristic ✅ A, B, C — necrotizing vasculitis of skin.
skin lesions in PDNS?
(Multiple answers are
correct)
A. Red to purple raised patches

B. Necrosis and crust formation

C. Petechiae on ears and hind
limbs
D. Ulcers on snout

Which organs are most ✅ A, B, D — systemic vasculitis and glomerulonephritis.
affected in PDNS? (Multiple
answers are correct)
A. Skin

B. Kidney

C. Liver

D. Spleen

Which gross renal lesion is ✅ A. Petechial hemorrhages and edema are classic.
typical of PDNS?
A. Cortical petechiae and pale
kidneys
B. Granulomatous nodules

C. Enlarged congested kidneys