Maternal GBS prevalence and infant transfer rate were high in Sweden. Males were more frequently colonised than females. The sensitivity of maternal cultures decreased with the duration of sample transport. Clindamycin resistance was scarce. The use of intrapartum antibiotics was limited in parturients with obstetric risk factors for early onset group B streptococcal disease.
In a retrospective study of neonatal septicaemia and meningitis in a defined region of western Sweden 1975-1986, 231 cases were identified. The incidence was 2.8/1000 live births. The case-fatality rate was 15%. thirty-three patients had meningitis. Only 55 patients (24%) had no known risk factors. Preterm delivery was a most important risk factor for both morbidity and mortality. The most common causative organisms were group B streptococci, Staphylococcus aureus and aerobic Gram-negative rods, together isolated from 82% of the patients. The cases were approximately equally divided between very early, early and late onset infections. Group B streptococci were over-represented in very early onset infections in all birthweight groups and aerobic Gram-negative rods were the most common isolates from low birthweight infants with late onset infections. However, group B streptococci, Staphylococcus aureus and Gram-negative rods were found in all birthweight and gestational age groups. Thus, initial antimicrobial therapy must be equally broad in all neonates with suspected septicaemia.
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