Hantavirus is on the rise in Argentina, where a stricken cruise ship began its journey

Officials and experts in Argentina are scrambling to figure out if their country is the source of a deadly hantavirus outbreak that has gripped an Atlantic cruise. Argentina is consistently ranked by the World Health Organization as having the highest incidence of the rare, rat-borne disease in Latin America. And it's seeing a surge of hantavirus cases that many local public health researchers attribute to the accelerating effects of climate change. The Argentine Health Ministry on Tuesday repor...