del 9 Flashcards
This virus is spread by bodily secretion such as blood, saliva or semen:
a. Porcine parvovirus.
b. Feline calicivirus.
c. Hepatitis A.
d. Rinderpest virus.
e. Rabbit haemorragic disease virus.
T: a, b, c, d, e
Which of the following viruses is/are capable of causing infection by direct contact:
a. Orthomyxoviridae.
b. Fowl poxvirus.
c. Cow pox.
d. Myxoma virus.
e. Transmissible gastroenteritis virus – TGEV
T: a, b, c
F: d, e
The following viruses may spread infection by aerosol transmission:
a. Porcine enterovirus 1.
b. Canine herpesvirus 1.
c. African swine fever virus.
d. Myxoma virus.
e. Bovine herpesvirus 1.
T: a, b, c, e
F: d
The origin of respiratory disease are:
a. Avian influenza virus.
b. Porcine circovirus.
c. Border disease virus.
d. Adenovirus.
e. Equine herpesvirus 1
T: a, b, d, e
F: c
Ether resistant are viruses:
a. Bovine rhinoviruses.
b. Togaviridae.
c. Herpesviruses.
d. Hepacivirus.
e. Equine rhinoviruses.
T: a
F: b, c, d, e
The following viruses are thought to cause haemorrhagic disease:
a. Orbivirus (deer)
b. Canine herpesvirus 1 (CHV).
c. Caliciviridae (RHDV).
d. Equine viral arteritis virus (EVAV).
e. Nairovirus.
T: a, c, e
F: b, d
Viruses which occur worldwide:
a. Equine viral arteritis virus (EVAV).
b. Yellow fever virus.
c. Gallid herpesvirus 2 (Marek‘s disease).
d. Border disease virus (BDV).
e. Bovine viral diarrhoea virus (BVDV).
T: a, c, d, e
F: b
Reproduction of animal viruses:
a. The first step in the animal virus cycle is adsorption to the host cell surface.
b. Viruses penetrate the plasma membrane and enter a host cell shortly after adsorption.
c. Some naked viruses (poliovirus): only their nucleic acids are released in the cytoplasm.
d. The mechanisms of penetration and uncoating do not vary with the type of virus.
e. The entire process from adsorption to final uncoating may take from minutes to several hours.
T: a, b, e
F: c, d
Pathogenic viruses of cats and dogs:
a. Cow pox.
b. Parvoviridae.
c. Astroviridae.
d. Adenoviruses.
e. Polyomaviridae.
T: b, c
F: a, d, e
Family Orthomyxoviridae:
a. Comprise the genera Alphavirus and Rubivirus.
b. Host range is limited to their original host species in the field.
c. Sensitive to heat, drying, detergents, disinfectants and very labile in the external environment.
d. Ss, (+), linear, helical symmetry.
e. Birds and swine are considered as a reservoir for subtypes.
T: c, e
F: a, b, d
Family paramyxoviridae:
a. May cause congenital infection.
b. Cytoplasmic replication, budding from the plasma membrane.
T: b
F: a
genus: respirovirus, morbilivirus, rubulavirus, avulavirus
mononegavirales
Lyssavirus:
a. Family: paramyxoviridae.
b. Rabies is notifiable and has long been the most feared zoonosis.
c. Fox population is <1 per 4/ km will support the virus.
d. Host: all mammals are susceptible.
e. Transmission is usually by bite or break in the skin.
T: b, d, e
F: a, c
ssDNA
- circoviridae
- anelloviridae
- parvoviridae
Herpesvirales
- adenoviridae
- herpesviridae
- hepadnaviridae
- papillomaviridae
- polyomaviridae
Reovirales and dsRNA virus families
- sedoreoviridae
- spinareoviridae
- birnaviridae
