Patient Zero in the cruise ship hantavirus outbreak has been identified as ornithologist Leo Schilperoord, whose passion for birds may have cost him his life. The 70-year-old man and his wife, Mirjam Schilperoord, 69, were on a five-month trip to South America. They first landed in Argentina on Nov. 27, and traveling through Chile, Uruguay and then back to Argentina in late March, where they went on a fateful birdwatching adventure. The couple — from Haulerwijk, a small village of 3,000 people in the Netherlands — were identified in obituaries published in their monthly village magazine. Ornithologist Leo Schilperoord, 70, has been identified as patient zero in the cruise ship hantavirus outbreak.…