Greg Bear - Darwin's Children

Eleven years have passed since SHEVA was discovered in human DNA - a retrovirus that caused mutations in the human genome and heralded the arrival of a new wave of genetically enhanced humans. Now these changed children have reached adolescence…and face a world that is outraged about their very existence. For these special youths are also ticking time bombs that could exterminate the "old" human race. Fear and hatred of the virus children have made them a persecuted underclass, quarantined by the government, targeted by bounty hunters, and demonized by the population. But pockets of resistance have formed among those opposed to treating the children like dangerous diseases.
Scientists Kaye Lang and Mitch Rafelson are part of this small but determined minority. Once at the forefront of the discovery and study of the SHEVA outbreak, they now live as virtual exiles in the Virginia suburbs with their daughter, Stella - a bright, inquisitive virus child who is quickly maturing and eager to seek out others of her kind.
But for all their precautions, Kaye, Mitch, and Stella have not slipped below the government's radar. The agencies fanatically devoted to segregating and controlling the new-breed children monitor their every move - waiting for the opportunity to strike the next blow in their escalating war to preserve "humankind" at any cost.