RESUMO
Objective To summarize the clinical characteristics and outcome of infants with group B streptococcus (GBS) blood stream infection.Methods The medical records of 55 cases with GBS blood stream infection who were hospitalized in Shenzhen Children′s Hospital from 1st January 2010 to 31st December 2015 were retrospectively analyzed.Results There were 30 boys and 25 girls in this study.The age ranged from 1 hour to 78 days.Six cases (10.9%) were early-onset and 49 cases (89.1%) were late-onset.Forty cases (72.7%) were neonates and 15 cases were infants.The meningitis was diagnosed in 20 patients (36.4%).Peripheral white blood cell (WBC) counts declined in 10 cases (18.2%), and elevated in 32 (58.2%) cases.Increased levels C-reactive protein were found in 41 cases (74.5%).All of isolates were susceptible to penicillin, ampicillin, linezolid and vancomycin, while the resistance rates to erythromycin, clindamycin, tetracycline and ciprofloxacin were 56.6% (30/53), 77.4% (41/53), 98.1% (52/53), and 1.9% (1/53), respectively.Meropenem was used in 18 cases, and penicillins or cephalosporins were used in 37 cases.Combined therapy with linezolid was used in 13 cases, combined therapy with vancomycin was used in 3 cases, and combined therapy with two kinds of antibiotics was used in 37 cases (67.3%).In clinical outcome analysis, 54 children (98.2%) were improved and 1 child (1.8%) died of complicated multiple organ dysfunction syndrome and intracranial hemorrhage.Conclusions GBS blood stream infection occurs commonly in the infants aged younger than 3 months, more than one third cases complicated with purulent meningitis.All of isolates are susceptible to penicillin, while the resistant rates are high to erythromycin and clindamycin.The percentage of combination therapy is high.The outcomes are not good.