At the US Centers for Disease Control and Prevention's Genomics and Health Impact blog this week, Muin Khoury — who directs the agency's Office of Public Health Genomics — describes "a day in the invisible life of public health genomics." Khoury narrates a hypothetical workday for a fictitious woman, who, like most of the public, he says, does not "realize that public health is at work to help make sure that genomic technologies are use