President Obama is finally ready to appoint the CDC chief. Today he'll announce that Thomas Frieden, New York City's health commissioner, will inherit the spot from Richard Bresser in June. Frieden, who worked at the CDC for 12 years before coming to New York, is thought to already be on the forefront of the fight against swine flu. "This is a tremendously exciting time for public health," Bresser said of his successor. "Frieden is one of the nation's leading public health experts and a consummate innovator."