Sir.—We were interested in the report of subdural empyema in an infant due to group B β-hemolytic streptococcus as presented by Drs Ferguson and Gotoff in the clinical memoranda section of the January issue of the Journal (131:97, 1977). We would like to correct their statement that this infection has not been previously reported. In the September 1976 issue of the Journal (130:1003-1004, 1976), we described an infant with group B streptococcus meningitis and otitis media. As we described in that article, the infant was found to have bilateral subdural empyema, which was managed by aspiration of the subdural space bilaterally. Group B streptococci were isolated from the fluid. As mentioned, the subdural aspirates were not productive by the fifth hospital day.