At least five Americans on both US coasts are being monitored for hantavirus symptoms, even though they never set foot on board the ill-fated MV Hondius cruise ship. Two New Jersey residents , two Marylanders, and one Californian are in isolation under the strict supervision of health department officials after they all took international flights that included passengers from the virus-stricken cruise. None has exhibited any symptoms, and it’s unclear if they contracted the virus. At least five Americans who flew on international flights with passengers from the MV Hondius are in isolation. AP Three passengers aboard the MV Hondius died. ASSOCIATED PRESS Seventeen Americans were aboard the Dutch expedition cruise ship at the center of the hantavirus outbreak. The rare Andes strain of hantavirus that is communicable between people ran rampant on the ship, killing three passengers and putting dozens of others at risk for infection.…