Midterm 1 Flashcards
Drinking water cannot transmit infective agents since it is hypoosmotic
False
In the case of iatrogenic infections, the infective agents are transmitted by the veterinarian.
True
Intra uterine infection does not occur since the placenta protects the fetus.
False
In the case of cyclozoonosis arthropods are responsible for maintaining the infection
False
An euryxen agent can infect several host species.
True
In the case of a local infection the site of entry and the lesions are at the same place.
True
The incubation time is the time between the appearance of the clinical signs and death of
the animal.
False
When the clinical signs disappear, shedding the agent is finished
False
In the case of an abortive infection no clinical signs will be seen.
True
In the case of latent infection only mild clinical signs will be seen.
False
Subunit vaccines contain only antigens of the agents.
True
Certain diseases can be eradicated with generation shift
True
Canine adenovirus serotype-1 may cause encephalitis in certain carnivore hosts.
True
Dogs carry Canine adenovirus serotype-1 usually in the spleen.
False
Only inactivated vaccines are available against Infectious Canine Hepatitis infections.
False
Infertility and abortions are the most significant signs of Bovine adenovirus infections
False
Avian adenoviruses spread both vertical and horizontal.
True
Adenoviruses may cause hydropericardium syndrome in chicken and in geese.
Ture
Egg Drop Syndrome usually appears in the beginning of the laying season.
False
The Turkey Hemorrhagic Enteritis and the Marble Spleen Disease are caused by the same virus
True
Feline panleukopenia is present worldwide.
True
Feline panleukopenia may be caused by Canine parvoviruses.
True
Aleutian mink disease virus induces enteritis in older mink.
False
Inactivated vaccines are used agains aleutian mink disease
False
The primary site of replication of the Derzsy´s disease virus is the gut.
True
Infection below 5 weeks of age result in severe clinical signs of the Derzsy´s disease.
True
Hemorrhagic enteritis and nephritis of geese is only prevalent in France.
False
Infection of day-old chickens with the Chicken Infectious Anemia virus leads to immune suppression.
True
Porcine circoviruses are responsible for a variety of clinical conditions.
True
Porcine circovirus replicates in the myocardium of the fetus.
True
Porcine circoviruses cannot be responsible for reproductive disorders.
False
Porcine circoviruses cause severe hemorrhagic diseases in pigs.
True
Herpesvirus infections frequently result in latent virus carry
True
Herpesviruses are strong antigens; therefore, single vaccinations provide life-long protection.
False
Antibodies against Infectious Bovine Rhinotracheitis Virus (IBRV) might be detected in the milk.
True
The most frequently used eradication strategy for IBRV is selection with the help of vaccines.
True
The Bovine Herpes Mammillitis virus causes lesions on the skin of the milker´s, therefore, it is a zoonotic agent.
True
Goats are the reservoir hosts of the Malignant Catarrhal Fever virus.
False
Convalescent swine are life-long carriers and potential shedders of Aujeszky’s disease virus.
True
Swine are immunized against the Aujeszky’s disease virus usually with gE-negative marker vaccines.
True
The Equid herpesvirus-1 may cause abortion storms in studs.
True
Pregnant mares abort usually several weeks after Equid herpesvirus-1 infection.
True
Abortion is a frequent complication of Coital Exanthema in mares.
False
Equid herpesvirus-2 may cause Keratoconjunctivitis in foals.
True
Feline Infectious Rhinotracheitis is characterized by inflammation of the upper respiratory tract.
True
Crowded area, poor general condition and stress contribute significantly to the development of Feline Infectious Rhinotracheitis.
True
Prolonged contact is usually needed for successful transmission of Feline Infectious Rhinotracheitis.
False
Sneezing is typical for Feline Infectious Rhinotracheitis
True
Infectious Laryngotracheitis virus is typically transmitted by the germinative route.
False
Infectious Laryngotracheitis virus replicates in the liver of cats.
False
Conjunctivitis is frequently associated with Infectious Laryngotracheitis.
True
Duck plague is only seen in day-old ducklings
False
Pigeon herpesvirus infection is frequently combined with adenovirus and circovirus infection.
True
The Marek disease virus survives for a long time in the environment.
True
Marek disease is caused by Turkey herpesviruses.
False
Transient Marek paralysis may lead to visceral form.
True
Parapoxvirus infections induce long-lasting immunity.
False
Cowpox virus is frequently present in rodents.
True
Contagious Pustular Dermatitis is often deadly at any age.
False
Sheep and goat pox are endemic in Europe.
False
Sheep pox is deadly for young susceptible lambs.
True
Lumpy Skin Disease virus is mostly transmitted by insects.
True
Myxomatosis is mostly seasonal.
True
There are no vaccines available against Myxomatosis.
False
Fowl pox viruses cause generalized diseases in seals
False
In the case of aerogenic infection the agents are transmitted with air.
True
If agents are passed from animals to humans, we speak about zoonosis.
True
Mortality shows the ratio of dead animals and the total stock.
True
Some infective agents can cause malformation of fetuses
True
Cellular immune response is very important in the case of viral diseases.
True
In case of latent infections, the agents are continuously shed.
False
Pandemic diseases are spreading fast around the Earth.
True
Selection (test and slaughter) is a method of eradiation of a disease
True
Canine adenovirus infects only dogs.
False
Dogs may develop transient bilateral corneal opacity after Canine adenovirus infection.
True
Bovine adenovirus-10 may cause hemorrhagic enteritis.
True
Aviadenovirus infections of geese may cause lesions similar to the Derzsy´s disease
True
Seropositive cattle cannot be carriers of the Infections Rhinotracheitis virus.
False
Bovine Herpes Mammillitis virus causes milkers’ nodules in humans.
True
Malignant Catarrhal Fever is usually lethal in cattle.
True
Dogs should be vaccinated against Aujeszky’s diseas
False
Canine herpesvirus-1 may contribute the signs of the Kennel Cough Syndrome.
True
Canine herpesvirus may remain in latency for years in infected animals.
True
Ulcerations of the oral mucosa are frequent signs of Feline Rhinotracheitis.
False
Abortion is rare in rhinotracheitis infected pregnant cats
False
Infectious Laryngotracheitis virus replicates in the upper respiratory tract.
True
Duck viral enteritis is usually mild, osmotic diarrhea.
False
Duck plague infects exclusively domestic and wild ducks.
False
Pigeon herpesvirus infection causes feather developmental problems
False
The usual way of infection by sheep or goat pox is inhalation.
True
Myxomatosis virus is only present in Australia.
False
Myxomatosis is mostly seasonal
True
Humans can be infected by the following poxviruses: Cowpox. Pseudo-cowpox. Vaccinia. Monkey pox.
✅ Cowpox.
✅ Pseudo-cowpox.
✅ Vaccinia.
✅ Monkey pox.
The chronic form of Marek disease is characterized by neurological disorders.
True
Transient paralysis by Marek disease usually ends in full recovery.
False
Marek disease usually starts as an airborne infection.
True
Free Marek virus particles are shed from the feather follicles
True
Porcine SMEDI can only be induced by parvoviruses.
False
Porcine parvovirus-1 (PPV-1) is transmitted through the fecal-oral route.
True
PPV-1 induces diarrhea in suckling piglets
False
Avian pox viruses are frequently transmitted by insects.
True
The mucosal form of Fowl pox is bening
False
Neurological disorders are frequent in Porcine parvovirus infections.
False
The primary site of Porcine parvovirus (PPV-1) replication is in the small intestine.
True
Canine parvoviruses are shed in high concentrations with the feces.
True
Subtypes of Canine parvovirus (CPV-2) cause panleukopenia in cats
True
Feline panleukopenia viruses may infect dogs.
False
Mink parvovirus enteritis is characterized by fever and high mortality.
True
Live vaccines are used against Aleutian Mink Disease.
False
Ferrets can also be infected by the Aleutian Mink Disease virus
True
Derzsy´s disease virus can cross into the egg.
True
Derzsy´s disease may occur both in geese and Muscovy chucks.
True
Hemorrhagic nephritis and enteritis of geese is caused by herpes viruses.
False
Hemorrhagic nephritis and enteritis of geese is present worldwide
True
Porcine circoviruses are genetically and antigenically uniform.
False
Porcine circoviruses may cause a variety of diseases.
True
Infection of day-old chickens with Chicken Anemia Virus leads to immune suppression.
True
Avian circovirus infections result high morbidity and low mortality.
True
Pigeon circoviruses are antigenically uniform.
False
Pigeon circoviruses frequently appear in diseases together with other viruses and bacteria
True
Germinative infection is frequent in mammals, it will result in malformation of the fetuses.
False
Galactogen infection cannot happen when the animals receive colostrum, since the antibodies in the colostrum prevent it.
False
In the case of horizontal infection animals in the same group infect each other.
True
Intra uterine infection can occur in pregnant animals
True
Pathogenicity means the ability of the agent to cause disease.
True
Virulence means the level of pathogenicity.
True
The amount of the agent does not influence the outcome of the infection, since it can replicate in the host.
False
In the case of optimal way of infection the least amount of agent can cause disease
True
