text: In the absence of an effective vaccine to prevent<unk>  virus infection, the only available tool to prevent the infection is by reducing the human-vector contact.
option_0: Chikungunya primary prevention
option_1: Relapsing fever primary prevention
option_2: Yellow fever primary prevention
option_3: Paratyphoid fever primary prevention
option_4: Dengue fever secondary prevention
option_5: Rocky Mountain spotted fever primary prevention
option_6: Mumps primary prevention
option_7: Rocky Mountain spotted fever secondary prevention