Health officials at the center of nation's Ebola crisis are moving into overdrive to tame widespread public fears about the disease. The Centers for Disease Control and Prevention (CDC) has announced three new protocols in the three days as it looks to assert control over the deadly virus that infected two Americans this month. "The bottom line here is that we have to keep up our guard against Ebola," Frieden told reporters Wednesday as he announced a three-week mandatory monitoring period for anyone traveling into the United States from West Africa.