A vacationing doctor who stepped in to treat hantavirus patients on the MV Hondius after the ship’s chief medic fell ill is isolating inside a biocontainment unit after also contracting the virus.

Retired oncologist Stephen Kornfeld was put in isolation after landing in Omaha, Nebraska – but told CNN Tuesday he’s feeling wonderful and currently showing no symptoms.

Kornfeld, one of 18 passengers who arrived in Omaha Monday, said he experienced flu-like symptoms while at sea — unaware that it could be hantavirus.

Stephen Kornfeld, a doctor who was vacationing on the MV Hondius, tested positive for the virus. Dr. Stephen Kornfeld

“I had three days of night sweats, a lot of chills, some mild respiratory problems, and a lot of fatigue,” he said.

“While the night sweats and the respiratory symptoms cleared up pretty quickly, fatigue lingered for about two-and-a-half weeks.”

Kornfeld, from Oregon, treated hantavirus patients when the ship’s chief medic fell ill – and was tested for the virus.…