Infectious Disease Exam 6 - Dr. Gibbs Review

Question 1

Seasonal resp inf w/sudden explosive outbreak in pigs, expected to die but recover dramatically

Accepted Answer

Swine Influenza

Question 2

Anorexia, fever, cyanosis; young piglets most suscpetible, but affects diff groups differently

Accepted Answer

Porcine Respiratory and Repdroductive Syndrome, Blue Ear Disease

Question 3

Foreign animal disease w/high mortality, high fever, splenomegaly, & hemorrhages.

Accepted Answer

African Swine Fever

Question 4

How is African Swine Fever transmitted?

Accepted Answer

soft ticks and meat, resistant to smoking or salting

Question 5

Which virus has leukocyte associated viremic spread to tissues including the uterus & fetus?

Accepted Answer

EHV-1

Question 6

Fever, resp signs, nasal disch, lacrimation, edema, leg hemorrhaging, abortions, PI in in males

Accepted Answer

Equine Viral Arteritits

Question 7

What might you find on necropsy of a horse that died of Influenza?

Accepted Answer

mononuclear infiltration of alveolar walls, bronchioitis w/infiltration of lymphocytes & histocytes

Question 8

What would you expect to find on necropsy of a horse that died of Swamp Fever?

Accepted Answer

hemorrhages on serosal & mucus surfaces, enlargement of spleen & liver, emaciation & pale MM (chronic cases), subQ edema (acute cases)

Question 9

What effects did FMD have on society when it was first discovered in 2001?

Accepted Answer

~4 mil pigs slaughtered to control > reduced meat supply, created bad social standing of local farmers

Question 10

Which people are important to the development of "One Medicine"?

Accepted Answer

Osler and his initial use of the term "One Medicine", Schwabe and his book "Vet Med & Human Health", Virchow - recognition of connection of human & animal health

Question 11

What strains of influenza can be isolated from horses?

Accepted Answer

H3N8 & H7N7

Question 12

Which viral infection does PEDv most closely resemble?

Accepted Answer

Transmissible Gastroenteririts

Question 13

DDX: explosive outbreak of upper resp disease in horses, high fever, dry cough, & nasal disch.

Accepted Answer

Equine Influenza

Question 14

Which equine virus can be compared with FIV in cats?

Accepted Answer

Equine Infectious Anemia

Question 15

What resources should be utilized for the most UTD info on emerging diseases?

Accepted Answer

ProMed, State Vets & USDA

Question 16

Porcine Circovirus 2 causes many things to happen, including which of the following?

Accepted Answer

secondary viral inf of parvovirus, postweaning multisystemic wasting disease, (poss) porcine dermatitis & nephropahty syndrome

Question 17

Which equine encephalitides did Dr. Gibbs discuss in his lectures?

Accepted Answer

Togaviruses & Flaviviruses

Question 18

Which virus posses the greatest risk of causing a pandemic?

Accepted Answer

Influenza

Question 19

Pseudorabies effects which population of pigs?

Accepted Answer

all 3 groups in different ways (<2wks = most susceptible)

Question 20

How are herpesviruses generally transmitted?

Accepted Answer

direct contact & aerosol/droplet

Question 21

What international agencies report the occurrences of animal diseases?

Accepted Answer

OIE, WAHIS, ProMed, Center of Food Safety & Public Health and USDA

Question 22

Horses (& humans) are dead end hosts for which viruses?

Accepted Answer

Eastern Equine Encephalitis, West Nile Encephalitis

Question 23

What are some key characteristics to the spread of FMD?

Accepted Answer

Pigs are amplifiers of the virus, Cattle are indicators of the virus, Sheep are silent spreaders of the virus

Question 24

Which influenza strains are endemic to pigs in the US?

Accepted Answer

H1N1 & H3N2

Question 25

Circling, hing limb weakness, recumbency, muscle fasciculation, impaired vision, lip droop

Accepted Answer

West Nile Encephalitis

Question 26

What effect of Blue Ear Disease gives way to secondary infections?

Accepted Answer

destruction of macrophages (~40%) esp in lungs

Question 27

What prevents eradication of African Swine Fever in endemic areas?

Accepted Answer

no vaccines, tick reservoir, persistent infections, virus is stable in food

Question 28

What factor might explain why EIA continues as a persistent infection after initial exposure?

Accepted Answer

virus replicates in macrophages & poss other cells

Question 29

How is FMD transmitted?

Accepted Answer

direct contact, fomites on boots or vehicles, contaminated feed or animal remains, saliva, milk, feces, aerosols, wind

Question 30

Prominent edema, esp supraorbital edema, and lung exudate causes asphyxiation in horses

Accepted Answer

African Horse Sickness

Question 31

Which of the following is not an example of wildlife acting as a reservoir?

Accepted Answer

persistent EVA inf in stallions due to exposure to deer

Question 32

Extrinsic Incubation Period

Accepted Answer

time taken by org to complete dvlpmt in IH

Question 33

Characterized by acute outbreaks of severe diarrhea & vomiting, can affect ~100% of naive herd

Accepted Answer

Porcine Epidemic Diarrhea virus

Question 34

Upon necropsy of an aborted foal as a result of EHV-1 infection, what would you find?

Accepted Answer

focal necrosis of liver, intranuclear inclusions esp in fetal liver & lung, aborted fetuses not autolyzed

Question 35

What details are related to EVA pathogenicity and transmission?

Accepted Answer

virus replicates in macrophages & endothelial cells, persistent inf in stallions, virus shed in pharyngeal secretions, urine, & semen, spread by droplet inf & sexual contact

Question 36

Marker vax have been used to eradicate pseudorabies in US. What might keep it in enviro?

Accepted Answer

feral pigs serve as a reservoir for the virus, latent inf (in sacral ganglia), can be reactivated by stress

Question 37

Which of the following is not a main driver of viral disease epidemics?

Accepted Answer

advancements of bioterrorism and its rampant use

Question 38

Which porcine viruses are resistant to enviro &/or can survive for several days in enviro?

Accepted Answer

Coronavirus, Circovirus

Question 39

What would be found on necropsy of a pig that died of influenza?

Accepted Answer

bronchial mucus, hyperemia of pharyng & laryng mucosa, mild pleuritis & pericarditis poss, plum-colored consolidation of anteroventral lung lobes, focal atelactasis & bronchial exudation

Question 40

DDX: anemia, hypergammaglobinemia, leukopenia, lymphocytosis & monocytosis.

Accepted Answer

Equine Infectious Anemia

Question 41

Fever, anorexia, depr, cerebral signs, SC/brainstem abnormalities, teeth grinding, low head

Accepted Answer

Eastern Equine Encephalitis

Question 42

Intrinsic Incubation Period

Accepted Answer

time taken by an org to completes its development in DH

Question 43

How is African Horse Sickness similar to Bluetongue virus?

Accepted Answer

both are orbiviruses transmitted by Culicoides

Question 44

Which foreign animal disease that Dr. Gibbs mentioned exhibits prodromal virus excretion?

Accepted Answer

Foot & Mouth Disease

Question 45

What factors are important about Vesicular Stomatitis?

Accepted Answer

important to distinguish from FMD, behaves like arthropod-borne inf, but no viremia

Question 46

How does Equine Herpesvirus 4 differ from EHV-1?

Accepted Answer

EHV-4 is significantly more mild than EHV-1, EHV-1 causes neurologic disease & systemic disease in foals

Infectious Disease Exam 6 - Dr. Gibbs Review

Questions 46

Infectious Disease Exam 6 - Dr. Gibbs Review

Questions 46