Virology - DNR/RNA viruses Flashcards
What DNA virus is single stranded?
Parvoviridae
What DNA virus has partially double stranded circular DNA?
Hepadnaviridae
Hepatitis B falls under what family?
Hepadnaviridae
What DNA virus replicates in the cytoplasm?
Poxviridae
What is the hallmark of Poxviridae infections?
Intracytoplasmic inclusion bodies
Typically fatal Poxviridae in rabbits
a) Parapoxvirus
b) Leporipox virus
c) Capripoxvirus
b) Leporipox virus
Which of the following correlates with Bovine Lumpy Skin Disease?
a) Parapoxvirus
b) Orf
c) Capripoxvirus
d) Cow pox
c) Capripoxvirus
Which of the following ZOONOTIC Parapoxvirus is a primary contagious pustular dermatitis in sheep and goats?
a) Orf
b) Scabby disease
c) Thistle disease
d) Sore mouth
e) All of the above
e) all of the above
Which of the following are zoonotic?
a) Orthopoxvirus (Cowpox)
b) Infectious tracheobronchitis
c) Suispoxvirus
d) Leoripoxvirus
a) Orthopoxvirus (cowpox)
What virus is responsible for the development of vaccines?
a) Smallpox
b) Parapoxvirus
c) Orthopoxvirus spp cowpox virus
d) Orthopoxvirus spp monkeypox virus
c) Orthopoxvirus spp cowpox virus
What parvovirus can cause cerebellar hypoplasia in kittens?
a) Procine parvovirus
b) Feline leukemia
c) Feline panleukopenia virus
d) Feline Infectious Peritonitis
c) Feline panleukopenia virus
Which of the following Herpesviridae can be spread sexually?
a) Varicella (HHV 3)
b) Herpes simplex virus
c) Epstein-barr virus
d) A and B
e) B and C
e) B and C
True or False
IBR and Aujezky’s Disease can be transmitted vertically as well as horizontally
True
Which of the following herpesviruses can have transplacental transmission?
a) Varicella zoster virus
b) Herpes simplex virus (HHV 1 and HHV 2)
c) Human herpesvirus HHV 4 (Epstein-barr virus)
c) Human herpesvirus HHV4 Epstein-barr virus
Marek’s disease is a DNA Herpesviridae that can cause which of the following in chickens?
a) Acute fatality
b) Ocular lymphomatosis
c) Swollen feather follicles
d) All of the above
d) All of the above
True or False
Papillomaviridae can be transmitted via close direct contact, but is not transmitted sexually
False - it IS transmitted sexually
Which of the following is incorrect about Polymoviridae?
a) It can infect the respiratory system
b) It can infect the kidneys and brain
c) It can be transmitted in eggs
d) All of the above are correct
d) All of the above are correct
What are the modes of transmission for Hepadnaviridae?
a) Parenteral
b) Sexual
c) blood
d) All of the above
e) None of the above it is airborne
d) All of the above
Hepadnaviridae is responsible for what virus?
a) Hepatitis B
b) Hepatitis A
c) Canine hepatitis
d) All of the above
a) Hepatitis B
Which of the following viruses affect the liver via hepatocytes?
a) Herpesviridae
b) Retroviridae
c) Rhabdoviridae
d) Hepadnaviridae
d) Hepadnaviridae
What form of Hepatitis B causes liver damage and will result in jaundice?
a) Acute Hepatitis B
b) Chronic Hepatitis B
c) Both
d) Neither cause jaundice
b) Chronic Hepatitis B
Which of the following is a characteristic of Retroviridae?
a) It has a pseudodiploid genome
b) It is reverse transcribed to DNA intermediates via reverse transcriptase
c) It has an envelope with GAG proteins
d) All of the above
d) All of the above
Retrovirus DNA is inserted in host genome as what?
A provirus
Jaagsiekte virus is from the genus Betaretrovirus. It can manifest into a contagious lung cancer or ovine pulmonary adenocarcinoma. What process does this virus go through to achieve this?
a) Reverse transcriptase
b) Acute Transforming Virus
c) Slow Transforming Virus
d) None of the above
c) Slow transforming Virus
This Retrovirus is also known as “Chasing disease” because it often goes unnoticed until the sheep become respiratory intolerant during exercise.
a) Bovine Leukosis
b) Jaagsiekte
c) Orthomoxyoviridae
b) Jaagsiekte
This bovine virus can cause enlargement of lymph nodes which can lead to protrusion of the conjunctival membrane.
a) Bovine Lumpy Skin disease
b) Bovine spongiform encephalopathy
c) Bovine Leukosis
d) Swamp Fever
c) Bovine Leukosis (spp)
*Genus: Deltaretrovirus
Reportable disease in equine that can lead to anemia, thrombocytopenia, swelling of legs
a) Lentivirus
b) Equine infectious anemia
c) Swamp Fever
d) All of the above
d) All of the above
Lentivirus = genus
Equine infectious anemia = spp
Swamp Fever = Lehman’s term
Which of the following statements are true of the Gammaretrovirus FeLV?
a) Vertical transmission is possible
b) It is called the “aggressive cat disease” because it is spread through bites
c) Most cats are symptomatic carriers
d) All of the above
a) Vertical transmission is possible
During the course of FeLV, when the virus is found in the early immune response stage, which infection is occurring?
a) Abortive infection
b) Regressive infection
c) Progressive infection
a) Abortive infection
What are the characteristics of the abortive infection of FeLV?
Effective immune response
Replication is halted
Rarely diagnosed
During the course of FeLV, when the virus is found to be in the late immune response, which infection is occurring?
a) Abortive infection
b) Regressive infection
c) Progressive infection
b) Regressive infection
Where does regression infection and late immune response occur in the body?
a) Oropharynx
b) Bone marrow
c) Salivary glands
d) All of the above
b) Bone marrow
What are the characteristics of Regressive infection?
Effective immune response
Transient viraemia
Viral reactivation possible
During the course of FeLV, what infection is occurring during the Poor/Absenet Immune response?
a) Abortive infection
b) Regressive infection
c) Progressive infection
c) Progressive infection
What are the characteristics of Progressive infection?
Continuously viraemic
Disease development
Poor prognosis
In what stage of infection can FeLV remain asymptomatic for life or become progressive if a cause is given (ie. transmission)?
Regressive infection
At what stage of infection will FeLV develop clinical signs?
Progressive infection
True or False
There is a vaccine available for FIV but not FeLV
FALSE
There is a vaccine for FeLV but there is NO vaccine for FIV currently
FIV is a species of the genus Lentivirus that is transmitted through bite injuries. What cells does the virus infect?
a) CD4 T cells
b) CD8 T cells
c) Macrophages
d) All of the above
d) All of the above
True or False
In FIV, after a deep bite wound the cat can either remain asymptomatic for life or it can progress into clinical disease
True
As T-cell concentration falls, HIV concentration ______
Rises
As T cells are further reduced, immune function is impaired. What type of infection occurs?
Opportunistic infections
As HIV concentration rises, T cell concentration falls and what is lost?
Natural immunity
What phase do most FIV positive cats remain?
Asymptomatic phase
Which of the following is the correct method for controlling FIV?
a) Euthanasia
b) Isolation
c) Spaying and neutering
d) all of the above
c) Spaying and neutering
Which of the following is the correct method for controlling FeLV?
a) Euthanasia
b) Spaying and neutering
c) Vaccination
d) All of the above
c) Vaccination
