(VIDEO-AT-LINK)The country's top medical official who has vowed to stop Ebola "in its tracks" in the U.S., conceded today that it's "not impossible" that others will contract the disease. Dr. Tom Frieden, director of the Centers for Disease Control and Prevention, said an extensive tracking process is underway in the wake of the first Ebola diagnosis in the United States, with special focus on the patient’s family and health staff. “We have a seven-person team in Dallas working with the local health department and the hospital, and we will be identifying everyone who may have come in contact with him...