Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Omsk Hemorrhagic Fever (OHF)? ?
    ### Response:
    Humans can become infected through tick bites or through contact with the blood, feces, or urine of an infected, sick, or dead animal – most commonly, rodents. Occupational and recreational activities such as hunting or trapping may increase human risk of infection.
    