Since May 1, the CDC has received more than 1,600 confirmed domestic cyclosporiasis case reports, and is waiting to confirm more than 5,100 additional cases.
A flight carrying U.S. citizens who were on the ship arrived Monday in Nebraska.
ABC7 Eyewitness News learned of two hantavirus exposures linked to an SFO traveler and a San Mateo County resident on the MV Hondius cruise ship.
California health officials on Monday released new information about four residents who were exposed to the hantavirus and are now being monitored, all of whom are currently healthy and not showing symptoms.
A Santa Clara County resident was one of two Californians aboard the cruise ship with the Andes hantavirus outbreak. The county is monitoring and evaluating the person in coordination with the California Department of Public Health and the CDC.
The outbreak was reported to the CDC on Thursday, during the cruise ship's April 28 to May 11 voyage.