PoxViridae L2

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Questions and Answers

Pseudocowpox belongs to which viral genus?

Orthopoxvirus
Parapoxvirus (correct)
Adenovirus
Herpesvirus

Which species can be affected by viruses in the Parapoxvirus genus?

Only cattle
Only humans
Cattle, sheep, goats, and humans (correct)
Birds and reptiles

What is pseudocowpox commonly called when it infects humans?

Cowpox
Orf
Milkers nodule (correct)
Bovine eczema

How is pseudocowpox primarily transmitted?

From infected cattle via direct or indirect contact (B) Signup and view all the answers

Which of the following is NOT a known transmission route of pseudocowpox?

Airborne transmission (D) Signup and view all the answers

How can calves become infected with pseudocowpox?

By sucking on infected teats of cows Signup and view all the answers

In which regions has pseudocowpox been reported?

In most countries worldwide Signup and view all the answers

What is the primary characteristic of pseudocowpox lesions?

Hyperplasia of squamous epithelium (B) Signup and view all the answers

How severe are pseudocowpox infections typically?

Mild (A) Signup and view all the answers

What is the correct sequence of lesion development in pseudocowpox?

Erythema → papule → vesicle or pustule → rupture → thick scab formation (B) Signup and view all the answers

What is the typical size range of the thick scabs formed in pseudocowpox?

0.5 to 25 cm in diameter Signup and view all the answers

Why do the thick scabs in pseudocowpox lesions become elevated?

Due to granulation tissue buildup (B) Signup and view all the answers

After 7–10 days, what is a characteristic feature of the healing pseudocowpox lesion?

A horseshoe-shaped ring of small scabs around a small wart-like granuloma (C) Signup and view all the answers

What is a characteristic feature of chronic pseudocowpox lesions?

Yellow-gray, soft scurfy scabs that are rubbed off during milking (B) Signup and view all the answers

Which of the following is NOT a feature of chronic pseudocowpox?

Painful ulcerative wounds (C) Signup and view all the answers

What happens to the skin in chronic pseudocowpox infections?

It becomes corrugated and thickened (C) Signup and view all the answers

What is the hallmark clinical sign (pathognomonic lesion) of pseudocowpox?

A horseshoe shaped ring of small scabs around a wart-like granuloma Signup and view all the answers

What laboratory methods can confirm a diagnosis of pseudocowpox?

Isolation and detection of the virus from vesicular fluid or teat skin samples (B) Signup and view all the answers

Which of the following diseases is NOT a differential diagnosis for pseudocowpox?

Foot-and-mouth disease (D) Signup and view all the answers

How does udder impetigo differ from pseudocowpox?

Udder impetigo is caused by a bacterial infection, whereas pseudocowpox is viral (A) Signup and view all the answers

Which environmental condition can cause teat lesions that resemble pseudocowpox?

Frostbite and teat chaps (B) Signup and view all the answers

What are the treatment methods for pseudocowpox?

Removal of scabs, burn scabs to prevent environmental contamination, application of an emollient ointment before milking and application of astringement preparation after milking. Signup and view all the answers

What are the prevention methods for psuedocowpox?

Disenfection via iodophor teat dip, isolation and treatment of infected cows, and reduce teat trauma- as injuries to skin of teat predisposes to infection Signup and view all the answers

Flashcards

Pseudocowpox genus

A viral genus that includes the pseudocowpox virus.

Species affected by Parapoxvirus

Cattle, sheep, goats, and humans.