Importance Group BStreptococcus (GBS) is an important cause of invasive bacterial
disease. Previous studies have shown a substantial and increasing burden of GBS
infections among nonpregnant adults, particularly older adults and those with underlying
medical conditions. Objective To update trends of invasive GBS disease among US adults
using population-based surveillance data. Design, Setting, and Participants In this
population-based surveillance study, a case was defined as isolation of GBS from a sterile …