 Originating in the reservoir of rodents, "Andes orthohantavirus" is easily transmitted to humans who come into contact with infected rodents or their fecal droppings.However, infected rodents do not appear ill, so there is no readily apparent indicator to determine whether the rodent is infected or not.Additionally, "Andes orthohantavirus", specifically, is the only hantavirus that can be spread by human to human contact via bodily fluids or long-term contact from one infected individual to a healthy person.