ours is the first-through-the-skin method that's been shown to rapidly and accurately detect malaria in seconds without the use of blood sampling or reagents,"said lead investigator Dmitri Lapotko,a Rice scientist who invented the vapor nanobubble technology. The diagnosis and screening will be supported by a low-cost,battery-powered portable device that can be operated by nonmedical personnel. One device should be able to screen up to 200000 people per year,with the cost of diagnosis estimated to be below 50 cents,he aid.