As the weather warms and people turn to spring cleaning and outdoor activities such as camping and hiking, they need to beware of a rare but deadly virus that is spread through mouse droppings and kills up to 40 percent of people who become infected, public health officials said.
The severe respiratory illness is known as hantavirus pulmonary syndrome, or HPS. In the United States, most of these cases are spread by deer mice, which live in woodland areas and deserts and are found throughout North America.
