FREE DVM Doctor of Veterinary Medicine Public Health & Zoonoses Questions and Answers

Question 1

A veterinarian is investigating an outbreak of an acute febrile illness in a herd of cattle, characterized by abortions and respiratory signs.
Laboratory testing confirms the presence of Coxiella burnetii.
Which of the following statements regarding the public health significance of this pathogen is most accurate?

Accepted Answer

It is a significant zoonotic pathogen, causing Q fever in humans, often through inhalation of contaminated aerosols.

Answer

It primarily causes foodborne illness in humans through consumption of contaminated meat products.

Answer

Human infection is rare and typically only occurs through direct contact with infected animal blood.

Answer

It is primarily a vector-borne disease, with ticks being the main mode of transmission to humans.

Question 2

A rural veterinary practice is implementing a public health initiative to reduce the risk of rabies transmission in their community. Which of the following strategies would be most effective in achieving this goal?

Accepted Answer

Establishing a mandatory, community-wide rabies vaccination program for all dogs and cats, coupled with public education.

Answer

Focusing solely on vaccinating owned domestic cats against rabies.

Answer

Relying primarily on post-exposure prophylaxis for humans bitten by potentially rabid animals.

Answer

Implementing a trap-neuter-release program for feral dog populations without mandatory vaccination.

Question 3

A veterinarian is called to investigate several cases of neurologic disease in horses on a farm, including ataxia, weakness, and muscle tremors. Mosquitoes are abundant in the area. Serology confirms Eastern Equine Encephalitis (EEE) virus infection. What is the most important public health message the veterinarian should convey to the farm owner?

Accepted Answer

Humans can be infected with EEE virus through mosquito bites, and prevention measures (e.g., mosquito control, personal protection) are crucial.

Answer

Humans are not susceptible to EEE virus infection from horses, so there is no public health risk.

Answer

EEE virus is primarily transmitted to humans through direct contact with infected horse saliva, so handling horses carefully is key.

Answer

Consumption of meat from EEE-infected horses poses a significant food safety risk to humans.

Question 4

Which of the following scenarios best illustrates the 'One Health' concept in action regarding zoonotic disease prevention?

Accepted Answer

A team composed of veterinarians, physicians, and environmental scientists collaborating to manage an outbreak of West Nile virus.

Answer

A veterinary pathologist diagnosing a novel viral disease in poultry during a necropsy.

Answer

A public health official investigating a cluster of human foodborne illnesses linked to a specific restaurant.

Answer

A pharmaceutical company developing a new antibiotic for livestock to improve production efficiency.

Question 5

A 4-year-old intact male cat presents with unilateral facial swelling, lameness, and fever. The owner reports the cat was in a fight with an unknown animal a few days prior. On physical examination, a draining abscess is noted on the affected limb. Gram stain of the exudate reveals Gram-negative rods. Given the history and clinical signs, which zoonotic pathogen is a significant concern for the owner and veterinary staff if the cat has not been vaccinated?

Accepted Answer

*Francisella tularensis*

Answer

*Bordetella bronchiseptica*

Answer

*Pasteurella multocida*

Answer

*Clostridium tetani*

Question 6

Which of the following is the most effective approach for a veterinarian to minimize the risk of occupational exposure to *Toxoplasma gondii* when working with cats?

Accepted Answer

Wearing gloves when handling feline feces and cleaning litter boxes, and practicing good hand hygiene.

Answer

Routinely administering antiparasitic medication to all cats in the clinic.

Answer

Limiting physical examination of outdoor or feral cats to reduce contact.

Answer

Advising all cat owners to feed only cooked meat diets to their pets.