One team, for instance, inserted the virus into aprogram running a Mandelbrot set, a complex, mathematics-based structure named after the father of fractal geometry.
The typical programstructure ties premium costs for the enrollee to income as a percentage of the poverty level, which, in effect, creates a sliding subsidy scale offering more support to low income individuals.
About half of the 30 million Americans expected to get coverage under the Affordable Care Act will be covered by an expansion of Medicaid, a state-run program that has long varied in its benefit structure from state to state.