Four Californians exposed to the deadly Hantavirus outbreak linked to a Dutch cruise ship are being monitored by health officials — including one Bay Area resident who was aboard the vessel before the illness was detected. The California Department of Public Health said on Monday it is coordinating with the CDC and local health officials after three California residents were identified as passengers on the MV Hondius , where an outbreak of Andes Hantavirus has killed three people . A fourth Californian was exposed while sitting near a returning cruise passenger on an international flight, CDPH said. State officials stressed the risk to the public remains “extremely low.” Two of the Californians have already returned home and are being monitored by local public health officials, according to CDPH. Two of the Californians have already returned home and are being monitored by local public health officials, according to CDPH.…