NAVLE Veterinary Public Health 5

Question 1

Which disinfection method is considered most effective for inactivating Cryptosporidium parvum oocysts in drinking water?

Accepted Answer

UV irradiation

Answer

Cryptosporidium oocysts are highly resistant to chlorine; UV irradiation effectively inactivates them by damaging their DNA.

Question 2

An outbreak of West Nile Virus neurological disease is detected in horses in a county. What is the primary public health concern for veterinarians to communicate?

Accepted Answer

Infected horses serve as sentinel animals indicating high mosquito transmission activity in the area

Answer

Horses are dead-end hosts and cannot transmit WNV to humans, but equine cases signal active arboviral transmission by mosquitoes in the area.

Question 3

Which federal regulation requires interstate shipment of livestock to be accompanied by a Certificate of Veterinary Inspection (CVI)?

Accepted Answer

Animal Health Protection Act

Answer

The Animal Health Protection Act authorizes USDA APHIS to regulate interstate movement of animals, requiring CVIs for most livestock shipments.

Question 4

A food inspector observes condensation dripping from overhead pipes onto exposed ready-to-eat food contact surfaces. This represents a violation of which food safety principle?

Accepted Answer

Sanitation and hygienic design (environmental sanitation)

Answer

Condensation dripping onto food contact surfaces represents an environmental sanitation and hygienic facility design failure, a prerequisite program violation.

Question 5

Botulism outbreaks associated with commercially processed foods typically involve which form of Clostridium botulinum toxin production?

Accepted Answer

Preformed toxin ingestion from improperly processed low-acid canned foods

Answer

Foodborne botulism typically results from ingestion of preformed toxin in low-acid, anaerobic environments created by improper canning processes.

NAVLE - North American Veterinary Licensing Examination Practice Test

NAVLE - North American Veterinary Licensing Examination Practice Test

NAVLE Veterinary Public Health 5