After two nurses in Dallas tested positive for Ebola after helping to care for Thomas Eric Duncan, the Liberian who died of the disease last week, federal health officials decided to tighten the guidelines for American hospitals with Ebola patients. Many hospitals, including those in the North Shore Long Island Jewish Health System and the Nebraska Medical Center in Omaha ? one of four facilities in the country with biocontainment units equipped to isolate patients with dangerous infectious diseases ? have long had more stringent guidelines than the C.D.C.
http://www.nytimes.com/interactive/...a-protection-worn-by-us-hospital-workers.html
(includes an illustration showing the 3 levels of PPE)