Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Zika virus infection ?
    ### Response:
    Zika virus infection is spread to people primarily through the bite of an infected mosquito. Zika virus can also be spread from a pregnant mother to her child and through sexual contact with an affected male partner. Cases of Zika virus transmission via blood transfusions have also been reported.
    