Previous guidelines were established in 2008 and were updated in August, Frieden said.
Those guidelines had been used successfully before, but the Dallas hospital where Ebola patient Thomas Eric Duncan was treated was relying on those guidelines, and still two nurses became infected with Ebola after caring for Duncan. "This is unacceptable," Frieden said. [2014 Ebola Outbreak: Full Coverage of the Viral Epidemic]
The new guidelines provide "an increased margin of safety" for workers, he said. They were developed with input from workers at the three specialized care units — Emory University Hospital in Atlanta, Nebraska Medical Center in Omaha and the National Institutes of Health Clinical Center in Bethesda, Maryland — where Ebola patients have been treated.
"The greatest risk in Ebola care is the taking off of whatever a health care worker has on," Frieden said. The new guidelines standardize and ritualize how this is done, he said.
In the guidelines, the CDC also recommends that workers wear a specialized respiratory mask, rather than just a facemask. The care for Ebola patients that takes place in U.S. hospitals is quite different from the care that Ebola patients in hospitals in West Africa receive, Frieden noted.
"What gets done in U.S. hospitals — suctioning, intubation, other things — that may not be done in Africa or the parts of the world where Ebola is spreading now," mean that additional safety measures are needed for workers in this country, he said. (The Ebola virus is not airborne; it spreads through contact with an infected patient, or their bodily fluids.)
On Sunday (Oct. 19), the last of the people who had contact with Duncan in the Dallas community, before he went into isolation at the hospital, cleared their 21-day monitoring period, and no cases of Ebola developed within that group. A number of health care workers who had contact with Duncan during his treatment are still within their monitoring period, Frieden said.
To date, the two nurses who contracted Ebola while treating Duncan are the only people to ever become infected with Ebola while in the United States. As of Oct. 14, there were at least 9,200 confirmed or suspected cases of Ebola in West Africa, and more than 4,500 people have died of the disease in that region.
source: livescience.com by Karen Rowan