Brucellosis (cattle) is spread through what mechanism?

Brucellosis (cattle) is spread through what mechanism?

• A. Through air only.
• B. Through mosquito bites.
• C. Through plant pollen.
• D. Through contact with contaminated cattle feces.

Answer: (D)

Brucellosis transmission in cattle occurs when susceptible animals come into contact with or ingest material contaminated by an infected cow. The bacteria are shed in placentas, fetal membranes, vaginal discharges, and can contaminate the surrounding environment. Among the listed options, contact with contaminated cattle feces best represents a realistic way an animal could acquire Brucella from the environment and then establish infection through mucous membranes or ingestion. The other options—air as the sole route, mosquito bites, or plant pollen—do not represent typical transmission pathways for Brucella in cattle.

Brucellosis transmission in cattle occurs when susceptible animals come into contact with or ingest material contaminated by an infected cow. The bacteria are shed in placentas, fetal membranes, vaginal discharges, and can contaminate the surrounding environment. Among the listed options, contact with contaminated cattle feces best represents a realistic way an animal could acquire Brucella from the environment and then establish infection through mucous membranes or ingestion. The other options—air as the sole route, mosquito bites, or plant pollen—do not represent typical transmission pathways for Brucella in cattle.