From her base in Gallup, New Mexico, Melissa Wyaco supervises about two dozen public health nurses who crisscross the sprawling Navajo Nation searching for patients who have tested positive for or been exposed to a disease once nearly eradicated in the U.S.: syphilis.
Infection rates in this region of the Southwest — the 27,000-square-mile reservation encompasses parts of Arizona, New Mexico, and Utah — are among the nation’s highest.