Carriage of group B streptococci in the upper respiratory tract.

Letters to the Editor on the 10 min samples. Since 1 % formalin Identification of the streptococcal isolates (0-4% formaldehyde final concentration) showed that only nine children were kills Marburg2 and Ebola (ETW Bowen, carriers of GBS, a carrier rate of 2 %. personal communication, 1980) viruses in Carrier rates of groups A, C, and G one hour or less, we consider 100% streptococci were 11%, 2%, and 4% formalin for at least 1 h to be an effective respectively. A significantly greater num- sterilising procedure. Undiluted formalin ber of children aged 5-12 yr were strepto- (BDH) contains about 0-13 mEq (mmol)/ coccal carriers in comparison with the I Na+ and less than 0002 mEq (mmol)/l older children (p < 0-001).