Which is another tick-borne disease besides Lyme disease?

Rocky Mountain spotted fever is a well-documented tick-borne disease caused by the bacterium Rickettsia rickettsii. It is primarily transmitted to humans through the bite of infected ticks, particularly the American dog tick and the Rocky Mountain wood tick. This disease is characterized by symptoms such as fever, rash, and potentially severe complications if not treated promptly.

In contrast, West Nile Virus, Chikungunya, and Zika virus are primarily transmitted by mosquitoes, not ticks. While they are significant vector-borne diseases, they do not fall into the category of tick-borne illnesses. Therefore, Rocky Mountain spotted fever is the relevant choice as it directly aligns with the question regarding tick-borne diseases.