Rickettsias are transmitted by which of the following?

Rickettsias are primarily transmitted through arthropod vectors, such as ticks, fleas, and lice. These microorganisms are intracellular pathogens that require a host for survival and reproduction. During a blood meal, an infected arthropod can introduce Rickettsia into the bloodstream of the host, leading to various diseases, including typhus and Rocky Mountain spotted fever. The reliance on arthropod vectors for transmission is a key characteristic that distinguishes Rickettsia from other pathogens that might spread through different routes, such as air or direct contamination. Understanding this vector-borne nature helps in implementing effective prevention strategies in controlling the spread of Rickettsial infections.