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Registered Sanitarian Exam: Zoonotic Diseases Questions With Complete Solutions
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Registered Sanitarian Exam: Zoonotic Diseases Questions With Complete Solutions
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Registered Sanitarian Exam: ZoonoticDiseases Questions With Complete
Solutions
less than a day to 2 years CORRECT ANSWERS how long can Pathogenic organisms
survive in soil?
Direct Transmision CORRECT ANSWERS Immediate § transfer of the infectious agent
directly INTO body
Touching, biting, kissing, sex, sneezing, coughing
Indirect transmission CORRECT ANSWERS Vehicle-borne, Mechanical, or Biological
transmission.
Biological transmission CORRECT ANSWERS requires the arthropod to propagate the
infective agent or be involved in the life cycle.
mechanical transmission CORRECT ANSWERS carried on the exterior of the body of
vector or passing through the gut
Vehicle-borne transmission CORRECT ANSWERS transmission is any living creature
that transmits an infectious agent to another living creature
Airborne transmission CORRECT ANSWERS Infective agents spread as 1u to 5u
microbial aearosols or dust and enter through the respiratory tract
CORRECT ANSWERS
Epidemic CORRECT ANSWERS Is an outbreak or many disease cases over a short
period of time.
Endemic CORRECT ANSWERS Disease is prevalent/established in an area
Pandemic CORRECT ANSWERS Worldwide outbreak of disease in humans in
numbers clearly in excess of normal
Zoonosis CORRECT ANSWERS disease of animals transmitted to humans
Types of Malaria CORRECT ANSWERS Plasmodium Falciparum, Plasmodium Vivax
Plasmodium Falciparum CORRECT ANSWERS Most severe malarial illness, often
coma then death
Often drug resistant
,Plasmodium Vivax CORRECT ANSWERS Most common strain
Less severe
Malaria CORRECT ANSWERS Reservoir: only humans
Transmission: bite of anopheles mosquito
Dengue and Yellow Fever CORRECT ANSWERS § Break bone fever
§ Acute febrile viral disease with sudden onset and severe headache and bone pain
§ Endemic to most tropical countries
§ Infectious agent: Flavivirus spp.
§ Reservoir: human-Aedes aegypti cycle
§ Transmission: day biting of mosquito
Filariasis CORRECT ANSWERS § Lymphatic dwelling nematode
§ Infectious agent: W. Bacrofti
§ Reservoir: humans
§ Transmission: mosquito bite
Encephalitis CORRECT ANSWERS § Inflammation of the brain / spinal cord
§ Culex:
· St. Louis, Western Equine, West Nile
§ Aedes:
· Lacrosse (California)- tree hole mosquito
Eastern equine: several mosquitos involved
West Nile Virus CORRECT ANSWERS § Flue like symptoms that can lead to
Encephalitis
§ Agent: Flavivirus spp.
§ Reservoir: crows, blue jays
§ Humans are dead end hosts
§ Transmission: many species of mosquitos
egg, larva, pupa, adult CORRECT ANSWERS Mosquito life cycle
physical control (mosquitos) CORRECT ANSWERS Best way to control mosquito
breeding.
Dispose of old tires, drain, buckets, wetlands
Biological Control (mosquitos) CORRECT ANSWERS · Example, mosquito-eating fish
Larviciding (mosquitos) CORRECT ANSWERS · Best method of active mosquito
control: treat breading sites especially catch basins, still waters
Juvenile Hormones CORRECT ANSWERS · stops mosquito maturation
, Adulticide CORRECT ANSWERS · best used for control of disease: kills infected
mosquitos
§ Ground Adulticiding CORRECT ANSWERS · ULV fogging
· Ultra-low volume fogger
· Creates a cloud
· Highly effective
o Must be justified by surveillance
Gavid trap CORRECT ANSWERS Mosquito trap that traps culex when they attempt to
lay their eggs.
NJ Light Trap CORRECT ANSWERS o Most common
o Mosquitos are attracted to light
General Flea Bio CORRECT ANSWERS § Adults feed on blood, larvae feed on
waste/debris found in carpets
§ In homes, associated with pets
Cat flea is most common, prefers to bite dogs or cats
Flea Control CORRECT ANSWERS § Tx of pets by vets is best
§ Removal of wild animals
§ Cleaning and vacuuming carpets
§ Spot tx of areas where fleas may bread
§ Use of Precor to control larvae
§ Yersinia pestis CORRECT ANSWERS · Bubonic (BLACK Plague)
o Is transmitted to humans by the bite of a flea infected by a squirrel or rodent
§ Ricketsia typhi CORRECT ANSWERS · Murine typhus or Endemic typhus
o Reservoir: rats
o Transmission: infected rats fleas
Rocky Mountian Spotted Fever CORRECT ANSWERS Rickettsia · Wood/ American
dog tick
o Reservoir: rodent
· Present as rash and joint damage
· Population at risk:
o children under 10
o Males over 40
o Natives
Lyme Disease CORRECT ANSWERS § Borelia burgdorferi
· Transmission: Deer tick
· Reservoir: ixodid ticks and wild rodents
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