摘要: Streptococcus agalactiae (group B streptococcus) is an important cause of disease in infants, pregnant women, the elderly and immunosuppressed adults. An effective vaccine likely to prevent majority infant (both early late onset), avoid limitations intrapartum antibiotic prophylaxis be cost effective. A number candidates, including capsular conjugate vaccines, have potential successful vaccines. Phase II human studies with vaccines been completed successfully. Issues yet resolved include safety acceptability vaccination during pregnancy, durability vaccine-derived immunity regulatory issues required for licensure.