Hantavirus live updates: Spanish authorities preparing for the arrival of M/V Hondius

The CDC is alerting doctors and health departments around the country to be aware of the potential for imported hantavirus cases from the cruise ship outbreak.

The agency notes that the risk of broad spread to the United States is considered extremely unlikely at this time.

There have been no confirmed hantavirus cases associated with the cruise ship in the U.S. and at least nine residents are being monitored across six states, but none have shown any signs of illness at this time.

The CDC’s advisory to doctors, via the Health Alert Network (HAN) system, reminds them that in the event of a potential hantavirus case, patients should be placed in an isolated room and health care providers should use a gown, gloves, eye protection and an N95 mask or higher level respirator.

Doctors should also consider hantavirus infections as a potential diagnosis if a patient presents with hantavirus symptoms as well as known contact with an infected individual, officials said.

-ABC News' Youri Benadjaoud

The California Health Department says they are monitoring one former passenger of the cruise ship M/V Hondius for potential hantavirus infection.

"Local health officials are in contact with the one returned passenger," the department said in a news release. "At this time, public health protocol includes daily temperature checks and assessment for any symptoms consistent with hantavirus, and direction to modify activities."

The department said it was notified by federal officials that a second California resident is still on board the cruise ship.

There are at least nine U.S. residents under monitoring across six states

No U.S. residents under monitoring have shown any signs of illness at this time.

The Centers for Disease Control and Prevention said it deployed a team earlier Friday to the Canary Islands, where the M/V Hondius is expected to dock in the coming days.

"The team will conduct an exposure risk assessment for each American passenger and provide recommendations for the level of monitoring required," the CDC said in a statement.

The American passengers will be evacuated on a U.S. government medical repatriation flight to Nebraska and transported to a quarantine center at the University of Nebraska in Omaha, the CDC said.

Another CDC team will deploy to Offutt Air Force Base in Bellevue, Nebraska, to "support public health assessment of returning passengers," the agency said.

Oceanwide Expeditions provided an update about the 87 guests and 60 crew member aboard the M/V Hondius Friday and said the situation on board "remains calm," as it heads to the Canary Islands.

The boat is scheduled to arrive early Sunday, but that timetable is subject to change, according to Oceanwide.

"Preparations regarding our point of arrival, quarantine and screening procedures for all guests, and the onward travel plans for all guests and affected crew are being led by organizations from a number of countries, including the WHO, RIVM, and Dutch authorities, in close cooperation with Spanish government authorities," Oceanwide said in a statement.

The cruise company provided a breakdown of the ship's passengers and crew and revealed there are 17 Americans aboard the ship.

-ABC News' Claire Bower