Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hantavirus Infections ?
    ### Response:
    Hantavirus pulmonary syndrome (HPS) is a rare but deadly viral infection. It is spread by mice and rats. They shed the virus in their urine, droppings, and saliva. Tiny droplets with the virus can enter the air. People can get the disease if they breathe infected air or come into contact with rodents or their urine or droppings.
    