Hantavirus is a virus that is found in the urine, saliva, or droppings of infected deer mice and some other wild rodents (cotton rats, rice rats in the southeastern Unites States and the white-footed mouse and the red-backed vole).It causes a rare but serious lung disease called Hantavirus pulmonary syndrome (HPS).antavirus is a virus that is found in the urine, saliva, or droppings of infected deer mice and some other wild rodents (cotton rats, rice rats in the southeastern Unites States and the white-footed mouse and the red-backed vole).
The average gross profit for convenience stores in 2009 was about $477,894. About 20 percent of convenience stores do not sell motor fuel that provides a gross profit margin of only about 6.4 percent.
1 To determine the gross profit margin, a business looks at the retail price of its product and subtracts the cost of materials and labor used to produce it. 2  It then divides that by the retail price. 3  For example, if you sell a product for $25, and it costs $20 to make, the gross profit margin is 20% ($5 divided by $25). To determine the gross profit margin, a business looks at the retail price of its product and subtracts the cost of materials and labor used to produce it. 2  It then divides that by the retail price. 3  For example, if you sell a product for $25, and it costs $20 to make, the gross profit margin is 20% ($5 divided by $25).