Abstract • During a three-week period, septicemia caused by group B Streptococcus, serotype III, developed in four infants born at a community hospital. The first infant had early-onset disease; late-onset disease that appeared, from epidemiologic data, to be nosocomial developed in the other three infants. Bacteriophage typing and antimicrobial susceptibility testing confirmed the relatedness of the isolates. A prospective study designed to differentiate between vertical and nosocomial transmission of group B Streptococcus showed that of 82 infants, 21 (26%) were culture-positive during their hospitalization, and nine of these infants (43%) had been culture-negative at birth. Although serotype III strains were recovered from four of nine infants with apparently nosocomial acquisition, none of the isolates displayed an antibiogram or bacteriophage type similar to that of the isolates involved in the recent cluster. Bacteriophage typing and antimicrobial susceptibility testing in addition to the use of serotyping may be helpful in epidemiologic studies of group B Streptococcus. (Am J Dis Child 1981;135:355-358) References 1. Baker CJ: Summary of the workshop on perinatal infections due to group B Streptococcus . J Infect Dis 1977;136:137-152.Crossref 2. Baker CJ, Barrett FF: Transmission of group B streptococci among parturient women and their neonates . J Pediatr 1973;83:919-925.Crossref 3. Baker CJ, Barrett FF: Group B streptococcal infections in infants . JAMA 1974;230:1158-1160.Crossref 4. Steere AC, Aber RC, Warford LR, et al: Possible nosocomial transmission of group B streptococci in a newborn nursery . J Pediatr 1975;87:784-787.Crossref 5. Aber RC, Allen N, Howell JT, et al: Nosocomial transmission of group B streptococci . Pediatrics 1976;58:346-353. 6. Paredes A, Wong P, Mason EO, et al: Nosocomial transmission of group B streptococci in a newborn nursery . Pediatrics 1977;59:679-682. 7. Ferrieri P, Cleary PP, Seeds AE: Epidemiology of group B streptococcal carriage in pregnant women and newborn infants . J Med Microbiol 1977;10:103-114.Crossref 8. Speck WT, Driscol JM, Polin RA, et al: Natural history of neonatal colonization with group B streptococci . Pediatrics 1977;60:356-359. 9. Winterbauer RH, Fortuine R, Eickhoff TC: Unusual occurrence of neonatal meningitis due to group B beta-hemolytic streptococci . Pediatrics 1966;38:661-662. 10. MacKnight JF, Ellis PJ, Jensen KA, et al: Group B streptococci in neonatal deaths . Appl Microbiol 1969;17:926. 11. Wald ER, Snyder MJ, Gutberlet RL: Group B β-hemolytic streptococcal colonization . Am J Dis Child 1975;131:178-180.Crossref 12. Matsen JM, Coghlan CR: Antibiotic testing and susceptibility patterns of streptococci , in Wannamaker LW (ed): Streptococci and Streptococcal Diseases: Recognition, Understanding and Management . New York, Academic Press Inc, 1972, pp 189-204. 13. Stringer J, Maxted WR: Epidemiological evaluation of a phage-typing system for group B streptococci , in Parker MT (ed): Pathogenic Streptococci . Surrey, England, Reed Books Ltd, 1978, pp 262-263. 14. Eickhoff TC, Klein JO, Daly AK, et al: Neonatal sepsis and other infections due to group B beta hemolytic streptococci . N Engl J Med 1964;217:1221-1228.Crossref 15. Anthony BF, Concepcion NF: Group B Streptococcus in a general hospital . J Infect Dis 1975;132:561-567.Crossref 16. Baker CJ, Webb BJ, Barrett FF: Antimicrobial susceptibility of group B streptococci isolated from a variety of clinical sources . Antimicrob Agents Chemother 1976;10:128-131.Crossref 17. Stringer J, Maxted WR: Phage typing of group B streptococci . Lancet 1978;1:328. 18. Anthony BF, Okada DM, Hobel CJ: Epidemiology of the group B Streptococcus: Maternal and nosocomial sources for infant acquisitions . J Pediatr 1979;95:431-436.Crossref
American Journal of Diseases of Children – American Medical Association
Published: Apr 1, 1981
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