Infectious Diseases
You are giving foot and mouth (FMD) vaccine to valuable breeding stock during
an outbreak confined to the eastern 1/3 of your state. This is an example of
a. Stamping-Out Modified with Emergency Vaccination to Kill
b. Stamping-Out Modified with Emergency Vaccination to Slaughter
c. Stamping-Out Modified with Emergency Vaccination to Live
d. Emergency Vaccination to Live without Stamping-Out - CORRECT ANSWER-c.
Stamping-Out Modified with Emergency Vaccination to Live
Rabbit Hemorrhagic Disease is
a. An arenavirus
b. Prevented through vaccination and biosecurity
c. Vector-borne
d. Rodent-borne - CORRECT ANSWER-b. Prevented through vaccination and
biosecurity
What precautions should international travelers who have been on a farm or
ranch take upon returning to the US?
a. Do not visit a farm or livestock facility for 72 hours after arrival in the US.
b. Disinfect shoes upon arrival at the US point of entry agricultural station.
c. Launder clothing soon after arrival in US in hot water and heat dry.
d. Use alcohol wipes on phone used to take pictures of livestock facilities. -
CORRECT ANSWER-c. Launder clothing soon after arrival in US in hot water and
heat dry.
Put in order the following, from least to most effective in destroying pathogens
a. Sterilants
b. Disinfectants
c. Detergents
d. Sanitizers - CORRECT ANSWER-c. Detergents
d. Sanitizers
b. Disinfectants
a. Sterilants
FMD Vaccines in the USA are
a. Ready-to-use multivalent vaccines which can deploy quickly
b. Manufactured post diagnosis using a vaccine precursor
c. DIVA (Differentiate Infected from Vaccinated Animals) so that an outbreak
would not impact WOAH status
d. MLV vaccines that induce rapid immunity
,e. Used in the place of "stamping-out" - CORRECT ANSWER-b. Manufactured
post diagnosis using a vaccine precursor
True/False: The National Scrapie Eradication Program has the goal of eradicating
classical scrapie from the USA so that USA can meet WOAH's "scrapie free"
status. - CORRECT ANSWER-True
Which of the following swine vesicular diseases are in the USA?
a. SVD, Swine Vesicular Disease
b. BTV, Blue Tongue Virus
c. SVV, Seneca Valley Virus
d. VE, Vesicular Exanthema - CORRECT ANSWER-c. SVV, Seneca Valley Virus
When vaccinating for FMD outbreak in the USA, which species are priority for
vaccination?
a. Cow-calf so that there is not spillover into wildlife sharing pasture
b. Pigs since they are effective at amplifying FMD virus
c. Sheep and goats since they may be unrecognized sub-clinical spreaders
d. Dairy cattle since they are vulnerable and important to the food chain
e. Zoo animals so that FMD will not become endemic in threatened species -
CORRECT ANSWER-d. Dairy cattle since they are vulnerable and important to the
food chain
A pig is diagnosed with erysipelas. What domestic disease was in the rule out list
before diagnosis?
a. ASF, African Swine Fever
b. CSF, Classical Swine Fever
c. Septicemic salmonellosis
d. Hog Cholera
Trivia bonus: What is the name of the rash in humans from E. rhusiopathiae? -
CORRECT ANSWER-c. Septicemic salmonellosis
Erysipeloid
Feral swine are reservoirs for which zoonotic diseases in the USA?
a. Brucellosis caused by Brucella scrofus
b. ASF, Africa Swine Fever
c. PED, Porcine Epidemic Diarrhea
d. PRRS, Porcine Respiratory and reproductive Syndrome
e. Tularemia caused by Francisella tularensis
f. Aujeszky's disease - CORRECT ANSWER-e. Tularemia caused by Francisella
tularensis
Which prion diseases may be present in USA cattle?
a. CWD
, b. vCJD
c. atypical BSE
d. Scrapie
e. Kuru - CORRECT ANSWER-c. atypical BSE
The following are core epidemiologic concepts in controlling FADs which enter
the USA. Give a one-word answer to summarize each concept.
1. Prevent contact between pathogen and susceptible animals
2. Stop production of virus by infected or exposed animals
3. Increase disease resistance or decrease shedding of susceptible animals
4. In the case of ASF, prevent ASF from becoming established in _________
swine populations and from becoming established in competent vectors. -
CORRECT ANSWER-1. Quarantine
2. Depopulation
3. Vaccination
4. Feral
The persistently infected (PI) BVD calf
a. Was infected shortly after birth before colostral immunity was effective
b. Was infected with cytopathic BVD in-utero
c. Will normally have a positive titer for BVD three weeks after birth
d. May progress to Mucosal Disease
e. Was infected with BVD, a Paramyxovirus, in-utero - CORRECT ANSWER-d. May
progress to Mucosal Disease
The World Organization for Animal Health (WOAH, formerly OIE) Global
Eradication program has the goal of eradicating which livestock disease by 2030?
a. Rinderpest
b. Contagious Bovine Pleuropneumonia (CBPP)
c. Dracunculiasis
d. Peste des petits ruminants (PPR) - CORRECT ANSWER-d. Peste des petits
ruminants (PPR)
The innate immune system contains
a. Antibodies
b. T lymphocytes
c. B lymphocytes
d. Macrophages - CORRECT ANSWER-d. Macrophages
Sterilizing immunity
a. Prevents transmission of the pathogen to new hosts
b. Is synonymous with protective immunity
c. Is mediated by the innate immune system
d. Is always cross protective between serotypes - CORRECT ANSWER-a.
Prevents transmission of the pathogen to new hosts