Neonatal osteomyelitis caused by group B streptococci.

A 3-week-old infant with a group B streptococcal osteomyelitis is described. On admission swelling and fluctuation were combined with local erythema in the right ankle joint region. Group B streptococci, type Ib, were isolated both from blood and from the local focus in the ankle. The diagnosis was further confirmed by X-ray examination showing a lytic lesion in the talus. The child was successfully treated with penicillin, initially in combination with kanamycin.