What is the recommended action after identifying Sarcoptes scabiei var bovis in a herd of cattle?

Identifying Sarcoptes scabiei var bovis in a herd of cattle is a significant finding, as this ectoparasite can lead to scabies, which causes discomfort, skin lesions, and potentially serious health issues in affected animals. The correct action is to immediately report these findings to state and federal authorities. This is crucial because Sarcoptes scabiei is a transmissible disease that can have broader implications for animal health, welfare, and potentially public health due to its zoonotic potential.

Reporting to authorities ensures that appropriate measures can be taken to manage the outbreak, including potential quarantines, monitoring of the herd and surrounding populations, and guidance on treatment plans. This action aligns with best practices in animal health management, enabling coordinated efforts for disease control and prevention.

Other responses, while they might seem reasonable, do not adequately address the urgency and importance of reporting a significant disease outbreak to the appropriate agencies. For example, immediate treatment with ivermectin is a crucial step, but it should typically follow a proper reporting process to ensure comprehensive management of the situation. Changing the herd's grazing location might help reduce transmission but does not address the root of the outbreak. Isolating affected animals, while a good practice in many scenarios, does not