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.
As the number of norovirus cases rise and hantavirus lingers on cruise ships, health officials advise passengers to take precautionary measures to avoid sickness.
The outbreak was reported to the CDC on Thursday, during the cruise ship's April 28 to May 11 voyage.
The CDC has activated its Emergency Operations Center and classified a hantavirus outbreak as a Level 3 response, the agency's lowest level of emergency activation, signaling a low risk to the general public.
More than two dozen people from at least 12 different countries left a cruise ship hit by a deadly hantavirus outbreak without contact tracing, officials say