Burden of Maternal Genitourinary Tract Infections: Genital and urinary tract (GU) infections may be due to endogenous or sexually transmitted pathogens, and are estimated to affect up to 41% of women of reproductive age globally, although there is wide regional, country, and population specific variation (Table 1). These estimates, however, may underestimate the burden in developing countries, as 60-80% of GU infections are asymptomatic in pregnant women [1], and furthermore many women never receive appropriate medical care in resource poor settings.