Feasibility Study for Identifying Anti Capsular Antibody Protection Against Invasive Group B Streptococcus (GBS) Disease in Newborns of 0-6 Days Age (Early Onset Disease [EOD]) as Well as Among Infants of 7-90 Days Age (Late Onset Disease [LOD])

Blood sample will be obtained from enrolled mothers at delivery(either immediately before or after delivery) Both original blood sample and cord blood sample will be obtained for serology.

Vaginal swab will be collected at delivery from a pre-defined subset of enrolled mothers for the identification of controls, for determining GBS maternal colonization status and serotype.