NAVLE Practice Test 2026 – Complete Exam Prep Guide

The correct choice highlights that tick control sprays can be ineffective in preventing the transmission of anaplasmosis, primarily because they may not provide a comprehensive solution for tick management. While tick control sprays can reduce the number of ticks present on cattle, they may not eliminate the risk of tick bites or the transfer of pathogens, including Anaplasma spp. Moreover, the effectiveness of these sprays can be highly variable, depending on factors such as environmental conditions, application frequency, and the particular type of ticks present in the area.

Preventative strategies like long-term oxytetracycline treatment are effective for treating and managing anaplasmosis once a cattle herd is already infected, although they do not serve as a primary means of preventing initial transmission. Culling infected cattle can help control the spread of anaplasmosis within herds, as it reduces the population of carriers, further lowering the risk of transmission to uninfected individuals. Modified live vaccinations target the pathogen itself, providing immunity and thus actively preventing the disease from occurring rather than solely focusing on tick control.

In summary, while tick sprays can have some role in managing the overall tick population, their limitations and the need for a multifaceted approach to effectively control anaplasmosis underscore why they can