Public-health officials trying to reduce hospital-acquired infections have adopted this one:
forbidding doctors to wear neckties because, as the U.K. Department of Health has noted, they
- “are rarely laundered,”
- “perform no beneficial function in patient care,” and
- “have been shown to be colonized pathogens.”
—Steven D. Levitt and Stephen J. Dubner, Super Freakonomics, p. 298 (bullet-points added).