Picornaviridae

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What are the two genuses in PIcornaviridae that are important to Toka?

Aphtovirus and Enterovirus

Which of the following viruses is in the genus Cardiovirus?

  • Foot and mouth disease viruses
  • Encephalomyocarditis virus (correct)
  • Swine vesicular disease virus
  • Porcine teschovirus 1

Match the Genus to virus associated with it

Aphtovirus = Foot and mouth disease Cardiovirus = Encephalomyocarditis virus Enterovirus = Swine vesicular disease virus Teschovirus = Porcine teschovirus 1 and 2-11

Which of the following species are affected by Aphtovirus?

<p>Cattle (A), Sheep (B), Swine (C)</p> Signup and view all the answers

Which of the following principle species are affected by Encephalomyocarditis virus?

<p>rodents (A), Swine (C), Elephants (D)</p> Signup and view all the answers

Which of the following statements about Picornaviridae virion properties is FALSE?

<p>They are unstable in mucus and feces. (C)</p> Signup and view all the answers

Picornaviruses can withstand strong sunlight

<p>True (A)</p> Signup and view all the answers

High humidity prohibits picornaviruses survival in the environment

<p>False (B)</p> Signup and view all the answers

Which of the following disinfectants is effective against Picornaviruses?

<p>Sodium carbonate (A)</p> Signup and view all the answers

Foot and mouth disease is a notifiable disease

<p>True (A)</p> Signup and view all the answers

Which of the following statements about Foot and Mouth Disease Virus (FMDV) is TRUE?

<p>FMDV is inactivated at pH levels below 6.5 and above 11. (B)</p> Signup and view all the answers

Which of the following best describes Foot and Mouth Disease (FMD)?

<p>A vesicular disease that affects cloven-hoofed animals (B)</p> Signup and view all the answers

What clinical signs are commonly seen in cattle infected with Foot and Mouth Disease Virus (FMDV)?

<p>All of the above (D)</p> Signup and view all the answers

The vesicles are noted in the _____, _______, __________, and ____________.

<p>The vesicles are noted in the buccal cavity, coronary bands, interdigital spaces and teats</p> Signup and view all the answers

The animals will recover from foot and mouth disease in ______ weeks unless secondary infections arise.

<p>2 weeks (A)</p> Signup and view all the answers

Why is Foot and Mouth Disease (FMD) in sheep and goats difficult to recognize?

<p>Sheep and goats typically show only mild or no clinical signs. (B)</p> Signup and view all the answers

What is a major consequence of Foot and Mouth Disease (FMD) outbreaks?

<p>Loss of livestock production and limitations on international trade (B)</p> Signup and view all the answers

What is the morbidity rate of Foot and Mouth Disease (FMD) in a susceptible animal population

<p>100% (C)</p> Signup and view all the answers

What is the control method of animals that are infected?

<p>The animals are culled to prevent the spread of disease</p> Signup and view all the answers

What is the primary mode of transmission of Foot and Mouth Disease (FMD) among animals?

<p>Respiratory aerosols and direct contact (B)</p> Signup and view all the answers

Which of the following is NOT a method of direct transmission for Foot and Mouth Disease (FMD)?

<p>A mosquito inoculation (C)</p> Signup and view all the answers

Why is Foot and Mouth Disease (FMD) considered highly contagious?

<p>The virus can remain in the human respiratory tract for 1-2 days, allowing spread to animals (A)</p> Signup and view all the answers

Why is clinical diagnosis of Foot and Mouth Disease (FMD) difficult?

<p>Vesicular diseases appear similar, requiring further testing for confirmation (B)</p> Signup and view all the answers

Because FMD presents with vesicles and salivation, it makes it indistinguishable form other vesicular diseases. For pigs, tranquilization may be necessary to complete the examination for clinical diagnosis

<p>True (A)</p> Signup and view all the answers

Match the statements of Foot and mouth diseases to appropriate species

<p>Cattle = Disease indicators; oral and hoof lesions, salivation, drooling etc Pigs = Are considered amplifying hosts; less severe oral lesions, hoof sloughing, snout vesicles Shoats = Are the maintenance hosts; mild signs if any Free bee = free bee</p> Signup and view all the answers

What is the first step before collecting or sending samples for Foot and Mouth Disease (FMD) testing?

<p>Notify the proper authorities and wait for instructions (B)</p> Signup and view all the answers

Which of the following laboratory tests is NOT used for Foot and Mouth Disease (FMD) diagnosis?

<p>Hemagglutination inhibition assay (D)</p> Signup and view all the answers

Which of the following diseases should be considered in the differential diagnosis of FMD in swine?

<p>Swine vesicular disease (B)</p> Signup and view all the answers

What is the recommended treatment for Foot and Mouth Disease (FMD)?

<p>Euthanasia and disposal in FMD-free countries (C)</p> Signup and view all the answers

Which of the following is a key biosecurity measure for preventing Foot and Mouth Disease (FMD) in FMD-free countries?

<p>USDA APHIS strict import restrictions (B)</p> Signup and view all the answers

What type of vaccine is used for Foot and Mouth Disease (FMD)?

<p>Killed vaccine, serotype-specific (C)</p> Signup and view all the answers

Why is it essential to identify the serotype of FMD before vaccination?

<p>Vaccination is only effective against the identified serotype (A)</p> Signup and view all the answers

Why is vaccination for Foot-and-Mouth Disease (FMD) not routinely done in the USA and Canada?

<p>The disease has not been present in these countries for a long time (C)</p> Signup and view all the answers

What is a major drawback of vaccinating against FMD in countries where the disease is not present?

<p>It harms international trade status (B)</p> Signup and view all the answers

Which of the following is TRUE about Enteroviruses?

<p>They cause diseases of economic importance in swine and poultry (B)</p> Signup and view all the answers

Swine Vesicular Disease Virus (SVDV) is classified as what type of disease in the USA and Canada?

<p>Notifiable disease (B)</p> Signup and view all the answers

How can Swine Vesicular Disease Virus (SVDV) be transmitted?

<p>Through ingestion, inhalation, and skin abrasions (C)</p> Signup and view all the answers

Which of the following clinical signs is characteristic of Swine Vesicular Disease Virus (SVDV)?

<p>Hemorrhagic skin lesions (D)</p> Signup and view all the answers

Where are the lesions noted on pigs with SVDV?

<p>Lesions are noted on the snout, lips and tongue</p> Signup and view all the answers

What clinical features can swine occasionally develop with SVDV?

<p>Some pigs may develop encephalomyelitis, ataxia, circling and convulsions</p> Signup and view all the answers

Where does the replication of SVDV occur, predominantly?

<p>Gastrointestinal tract (C)</p> Signup and view all the answers

How soon after infection can pigs become viraemic with Swine Vesicular Disease Virus (SVDV)?

<p>Within 24 hours (C)</p> Signup and view all the answers

When can an ELISA test be used for diagnosing Swine Vesicular Disease Virus (SVDV)?

<p>If a sufficient amount of vesicular fluid is collected (B)</p> Signup and view all the answers

How long does it take for the Swine Vesicular Disease Virus (SVDV) to produce cytopathic effects (CPE) in swine kidney cells during virus isolation?

<p>6 hours (A)</p> Signup and view all the answers

Flashcards

Picornaviridae Genera of Concern

Two important genera within the Picornaviridae family.

Cardiovirus Example

A virus within the genus Cardiovirus.

Aphtovirus Host

Species commonly affected by Aphtovirus, specifically Foot and Mouth Disease.

Encephalomyocarditis Virus Host

Principle species affected by Encephalomyocarditis virus.

Signup and view all the flashcards

Picornaviridae Virion Stability

Picornaviruses are stable in mucus and feces.

Signup and view all the flashcards

Picornaviruses and Sunlight

Picornaviruses are able to survive exposure to strong sunlight.

Signup and view all the flashcards

Picornaviruses and Humidity

Picornaviruses tend to survive better in low humidity environments.

Signup and view all the flashcards

Effective Picornavirus Disinfectant

A disinfectant effective against Picornaviruses.

Signup and view all the flashcards

Foot and Mouth Disease Reporting

Foot and Mouth Disease requires mandatory reporting to authorities.

Signup and view all the flashcards

FMDV Inactivation pH

FMDV is inactivated at pH levels below 6.5 and above 11.

Signup and view all the flashcards

Foot and Mouth Disease (FMD)

A highly contagious vesicular disease affecting cloven-hoofed animals.

Signup and view all the flashcards

FMD Symptoms in Cattle

Clinical signs of FMD in cattle include vesicles, fever, and lameness.

Signup and view all the flashcards

FMD Vesicle Locations

The vesicles are noted in the buccal cavity, coronary bands, interdigital spaces and teats.

Signup and view all the flashcards

FMD Recovery Time

Animals will recover from FMD in approximately 2 weeks, absent secondary infections.

Signup and view all the flashcards

FMD in Sheep and Goats

Usually show mild or no symptoms.

Signup and view all the flashcards

Consequences of FMD Outbreaks

Major economic consequences include loss of livestock production and trade restrictions.

Signup and view all the flashcards

FMD Morbidity Rate

Nearly 100% of susceptible animals get infected.

Signup and view all the flashcards

FMD Control Method

Culling infected animals is used.

Signup and view all the flashcards

Primary FMD Transmission

Spreads through respiratory aerosols and direct contact.

Signup and view all the flashcards

FMD Not Direct Transmission

A mosquito inoculation.

Signup and view all the flashcards

FMD Highly Contagious

The virus can persist in the human respiratory tract for up to 2 days

Signup and view all the flashcards

FMD Clinical Diagnosis

Vesicular diseases present similarly, requiring further testing to determine FMD

Signup and view all the flashcards

Clinical Diagnosis in Pigs

True, tranquilization may be necessary to complete the examination for clinical diagnosis in pigs

Signup and view all the flashcards

First Step in FMD Testing

First the proper authorities must be notified before collecting samples for FMD testing.

Signup and view all the flashcards

Laboratory Test Not Applicable to FMD

Hemagglutination is not used

Signup and view all the flashcards

FMD Differential Diagnosis in Swine

Swine vesicular disease.

Signup and view all the flashcards

FMD Recommended Treatment

Euthanasia and disposal.

Signup and view all the flashcards

FMD Key Biosecurity Measure

USDA APHIS strict import restrictions.

Signup and view all the flashcards

FMD Vaccine Type

Killed vaccine, serotype-specific.

Signup and view all the flashcards

FMD Serotype Identification

Vaccination is only effective against the identified serotype.

Signup and view all the flashcards

More Like This

Hepatitis A Virus (HAV) Quiz
5 questions
Familia Picornaviridae
12 questions
Use Quizgecko on...
Browser
Browser