(Seattle, WA)  --  Health officials say they've confirmed the third case of Zika virus in Washington.  According to the Centers for Disease Control and Prevention, the case involves a King County man who recently traveled to Colombia.  Officials say the mosquito that carries the Zika virus isn't found in the Pacific Northwest.  However, the CDC says Zika can be sexually transmitted by a man to his partners, even if he doesn't have symptoms.