Former CDC director Tom Frieden, MD, MPH, recently described a hierarchy of controls — elimination, substitution, engineering, administration and personal protective equipment — that may help prevent COVID-19 among health care workers.
His remarks came during the National Medical Association’s Annual Meeting, held virtually due to the pandemic.
Frieden said the “most effective” step is eliminating the hazard or infection. This can be accomplished by not allowing people who are ill to enter nursing homes and other congregate facilities. It can also be accomplished
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