Using 1 germ to fight another when today's antibiotics fail

NEW HAVEN, Conn. — Bacteria lodged deep in Ella Balasa's lungs were impervious to most antibiotics. At 26, gasping for breath, she sought out a dramatic experiment — deliberately inhaling a virus culled from sewage to attack her superbug."I'm really running out of options," said Balasa, who traveled from her Richmond, Virginia, home to Yale University for the last-resort treatment. "I know it might not have an effect. But I am very hopeful."Pitting one germ against another may sound