Schistosomiasis, also known as bilharzia, is a disease caused by parasitic worms. Although the worms that cause schistosomiasis are not found in the United States, more than 200 million people are infected worldwide.In terms of impact this disease is second only to malaria as the most devastating parasitic disease.nfection with Schistosoma mansoni, S. haematobium, and S. japonicum causes illness in humans; less commonly, S. mekongi and S. intercalatum can cause disease. Although the worms that cause schistosomiasis are not found in the United States, more than 200 million people are infected worldwide.
A difficult question to answer, but the average sniper rifle in the  .300-.308 caliber can shoot anywhere between 100 and 800 yards. A  .50 caliber is estimated to effective â¦ at about 4 kilometers (2.5  miles).   US snipers are trained to engage targets at ranges up to 1000  meters.
For as long as most active SWAT operators have been police officers, there has been one gospel truth about SWAT sniper operations: the 70-Yard Rule. Ask any SWAT sniper what is the average range of a police sniper shooting, and he will answer, âAbout 70 yards.â Ask him the source of his data, and he will say, âFBI statistics.â.