Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Parasites - Toxocariasis (also known as Roundworm Infection)? ?
    ### Response:
    Infected dogs and cats shed Toxocara eggs in their feces into the environment. Once in the environment, it takes 2 to 4 weeks for Toxocara larvae to develop and for the eggs to become infectious. Humans or other animals can be infected by accidentally ingesting Toxocara eggs.
    