Incidence Of Early-onset Sepsis Research Articles

Factors Associated with Prolonged Antibiotic Therapy in Neonates with Suspected Early-Onset Sepsis.

Early-onset sepsis (EOS) is a rare but profoundly serious bacterial infection. Neonates at risk of EOS are often treated with antibiotics. The start of empiric antibiotic therapy can successfully be reduced by the implementation of the EOS calculator. However, once started, antibiotic therapy is often continued despite a negative blood culture. To decrease the burden of antibiotic therapy, it is necessary to know whether the clinician's reasons are based on objective factors. Therefore, we performed a retrospective single-centre cohort study to identify the factors associated with prolongation of antibiotic therapy in neonates with suspected EOS but a negative blood culture. Maternal, clinical, and laboratory data of neonates with a gestational age of ≥32 weeks, admitted between January 2019 and June 2021, were collected. Among neonates with a negative blood culture, we compared neonates with prolonged (≥3 days) to neonates with discontinued (<3 days) antibiotic therapy. The clinician's reported reasons for prolonging therapy were explored. Blood cultures were positive in 4/146 (2.7%), negative in 131/146 (89.7%), and not obtained in 11/146 (7.5%) of the neonates. The incidence of EOS was 0.7 per 1000 neonates. Of the 131 neonates with a negative blood culture, 47 neonates (35.9%) received prolonged antibiotic therapy. In the prolonged group, the mean gestational age was higher (38.9 versus 36.8 weeks), and spontaneous preterm birth was less prevalent (21.3% versus 53.6%). Prolonged treatment was associated with late onset of respiratory distress, respiratory rate, hypoxia, apnoea and bradycardia, pale appearance, behavioural change, and elevated CRP levels. The most reported reasons were clinical appearance (38.3%), elevated CRP levels (36.2%), and skin colour (10.6%). Prolonging empiric antibiotic therapy despite a negative blood culture is common in suspected EOS. Clinical signs associated with prolongation are uncommon and the reported reasons for prolongation contain subjective assessments and arbitrary interpretations that are not supported by the guideline recommendations as arguments for prolonged therapy.

Prenatal and Postnatal Disparities in Very-Preterm Infants in a Study of Infections between 2018-2023 in Southeastern US.

The birthrate of Black preterm (BPT) infants is 65% higher than White preterm (WPT) infants with a BPT mortality that is 2.3 times higher. The incidence of culture-positive late-onset sepsis is as high as 41% in very-preterm infants. The main purpose of this study was to examine thermal gradients and the heart rate in relation to the onset of infection. This report presents disparities in very-preterm infection incidence, bacteria, and mortality data amongst BPT and WPT infants. 367 preterms born at <32 weeks gestational age (GA) between 2019-2023 in five neonatal intensive care units (NICUs) were enrolled to study the onset of infections and dispositions; REDCap data were analyzed for descriptive statistics. The 362 infants for analyses included 227 BPTs (63.7%) and 107 WPTs (29.6%), with 28 infants of other races/ethnicities (Hispanic, Asian, and other), 50.6% female, mean GA of 27.66 weeks, and 985.24 g birthweight. BPT infants averaged 968.56 g at birth (SD 257.50), and 27.68 (SD 2.07) weeks GA, compared to WPT infants with a mean birthweight of 1006.25 g (SD 257.77, p = 0.2313) and 27.67 (SD 2.00, p = 0.982) weeks GA. Of the 426 episodes of suspected infections evaluated across all the enrolled infants, the incidence of early-onset sepsis (EOS) was 1.9%, with BPT infants having 2.50 times higher odds of EOS than WPT infants (p = 0.4130, OR (odds ratio) = 2.50, p_or = 0.408). The overall incidence of late-onset sepsis (LOS) was 10.8%, with LOS in 11.9% of BPT infants versus 9.3% (p = 0.489, OR = 1.21, p_or = 0.637) of WPT infants. BPT infants made up 69.2% of the 39 infants with Gram-positive infections vs. 25.6% for WPT infants; 16 infants had Gram-negative culture-positive infections, with 81.2% being BPT infants versus 18.8% being WPT infants. Of the 27 urinary tract infections, 78% were in BPTs. The necrotizing enterocolitis incidence was 6.9%; the incidence in BPT infants was 7.5% vs. 6.5% in WPT infants. The overall mortality was 8.3%, with BPTs at 8.4% vs. WPT infants at 9.3%, (p = 0.6715). BPTs had a higher rate of positive cultures, double the Gram-negative infections, a much higher rate of urinary tract infections, and a higher rate of mortality than their WPT counterparts. This study emphasizes the higher risk of morbidity and mortality for BPTs.

Antibiotic Use in Late Preterm and Full-Term Newborns

Antibiotic treatment saves lives in newborns with early-onset sepsis (EOS), but unwarranted antibiotic use is associated with resistant bacteria and adverse outcomes later in life. Surveillance is needed to optimize treatment strategies. To describe antibiotic use in association with the incidence and mortality from EOS among late-preterm and full-term newborns. The Sweden Neonatal Antibiotic Use study was a nationwide observational study that included all late-preterm and full-term neonates born from January 1, 2012, to December 31, 2020, in neonatal units of all levels. All hospital live births from 34 weeks' gestation during the study period were included in the study. Data were collected from the Swedish Neonatal Quality Register and the Swedish Medical Birth Register. Data were analyzed from August 2022 to May 2023. Admission for neonatal intensive care during the first week of life. The main outcomes were the usage of intravenous antibiotics during the first week of life, the duration of antibiotic therapy, the rate of culture-proven EOS, and mortality associated with EOS. A total of 1 025 515 newborns were included in the study; 19 286 neonates (1.88%; 7686 girls [39.9%]; median [IQR] gestational age, 40 [38-41] weeks; median [IQR] birth weight, 3610 [3140-4030] g) received antibiotics during the first week of life, of whom 647 (3.4%) had EOS. The median (IQR) duration of antibiotic treatment in newborns without EOS was 5 (3-7) days, and there were 113 antibiotic-days per 1000 live births. During the study period there was no significant change in the exposure to neonatal antibiotics or antibiotic-days per 1000 live births. The incidence of EOS was 0.63 per 1000 live births, with a significant decrease from 0.74 in 2012 to 0.34 in 2020. Mortality associated with EOS was 1.39% (9 of 647 newborns) and did not change significantly over time. For each newborn with EOS, antibiotic treatment was initiated in 29 newborns and 173 antibiotic-days were dispensed. This large nationwide study found that a relatively low exposure to antibiotics is not associated with an increased risk of EOS or associated mortality. Still, future efforts to reduce unwarranted neonatal antibiotic use are needed.

Incidence of group B streptococcus early-onset sepsis in term neonates with second-line prophylaxis maternal intrapartum antibiotics: a multicenter retrospective study

BackgroundThe difference in incidence of early onset sepsis (EOS) caused by Group B Streptococcus (GBS) among term neonates whose mothers receive first versus second-line intrapartum prophylaxis is poorly described. ObjectiveTo compare the incidence of GBS EOS in term neonates born to mothers who receive first, second-line or no intrapartum antibiotics, and describe the short term and survival outcomes of neonates who developed GBS EOS stratified by maternal antepartum prophylaxis. Study DesignThis was a retrospective review of electronic medical records. We queried the Pediatrix Medical Group Clinical Data Warehouse to evaluate the outcomes of term neonates born to GBS positive mothers between 2003 – 2020, and compared the incidence and outcomes of neonates with GBS EOS whose mothers received first versus second-line/no intrapartum prophylaxis. ResultsAmong 496,180 neonates, 104,196 (21%) were born to GBS positive mothers. Out of 97,983 GBS positive mothers with adequate prenatal antibiotic documentation, 49,234 (50%), 12,679 (13%) and 36,070 (37%) received first-line, second-line and no intrapartum prophylaxis, respectively. Incidence of GBS EOS among all neonates with maternal GBS carriage was 0.22% (231/104,196). Neonates whose mothers received second-line intrapartum antibiotics and no antibiotics had higher risk of GBS EOS infection compared to first-line intrapartum antibiotics [adjusted odds ratio (aOR) 4.12, 95% confidence interval (CI): 2.66 – 6.38 and aOR 3.80, 95% CI: 2.66 – 5.44, respectively]. No statistically significant difference in the risk of GBS EOS in neonates born to mothers who received second-line versus no antibiotics (aOR 0.92, 95% CI: 0.64 – 1.33). ConclusionNeonates exposed to second-line maternal GBS prophylaxis had increased risk of GBS EOS compared to those exposed to first-line maternal GBS prophylaxis. There was no statistically significant difference in GBS EOS incidence between second-line versus no antibiotics in mothers with GBS carriage.

Neonatal early-onset sepsis calculator: Impact on antibiotic use in a level II neonatal unit in Western Australia

BackgroundOveruse of empirical intravenous antibiotics in neonates in high-income countries (HICs) is well documented. The Kaiser Permanente neonatal early-onset sepsis (EOS) calculator is an evidence-based sepsis risk assessment tool that has demonstrated potential to reduce antibiotic usage in this population. The incidence of early-onset sepsis in most HICs is 0.4–0.8 per 1000 live births. The objective was to evaluate the calculator's impact on antibiotic rates and length of stay in a regional level II Special Care Nursery. MethodsA single-centre retrospective cohort study compared antibiotic administration rates in the first 72 h in neonates ≥35 weeks gestation born during two 6-month periods in 2019 (pre-EOS calculator) and 2021 (post-EOS calculator). Electronic and paper case records were accessed to capture data. Continuous data were summarised using mean and standard deviation, and categorical data were summarized using frequency distributions. There were 951 (2019) and 1129 (2021) infants born during the study periods. ResultsFollowing implementation of the calculator, antibiotic exposure decreased from 13.7% to 4.7% of all neonates without reported negative outcomes. Mean length of stay for neonates born across the two periods decreased from 2.38 to 2.13 days. Indications for antibiotic use shifted more towards clinical condition and away from obstetric risk factors. There were no culture-proven cases of sepsis or readmissions with EOS in either period. ConclusionImplementation of the EOS calculator significantly reduced exposure to antibiotics, without adverse outcomes.

Early Onset Sepsis in Neonates

Background Neonatal sepsis is one of the most important causes of neonatal morbidity and mortality. The most common risk factors associated with early onset sepsis (EOS) are preterm delivery, low birth weight, premature rupture of membranes, maternal urinary tract infection, Clinical manifestations of neonatal sepsis are nonspecific. These include temperature instability, respiratory distress, apnea, poor feeding, lethargy, irritability, convulsions, hypotonia, poor perfusion and abdominal distension Aim and objectives To describe epidemiology, demographic and incidence of early onset sepsis in neonate with risk factors at NICUS of Ain Shams University Hospitals. Subjects and methods This study is prospective cohort study, was carried out on 80 neonates with one or more maternal risk factors associated with EOS. Neonates will be completely evaluated and subsequently discriminated over the period of 1st 72hours of life in Neonates with risk factors for early-onset sepsis. diagnosis of EOS will be established based on the presence of any clinical evidence suggestive of sepsis, quantitatie C-reactive protein (CRP) levels ≥6 mg/dL, Rodwell’s hematological scores ≥3 and/or Tollner’s scores ≥ 10 with or without positive blood culture results, within the 1st 72 hours postnatal age. Result Among the studied maternal risk factors of neonatal sepsis in our study, 73.8% had PROM being the most common maternal risk factor for early neonatal sepsis followed by ceserian mode (C.S) of delivery 66.3%, and 26.2% had Chorioamintis. The gestational age was distributed as 36.76±3.01 with minimum 30 and maximum 42 weeks, of Ballard score 37.05±2.88 and weight was 2.87±0.82. 58.8% were females and 41.3% were males. Also, 42.5% of the studied group was preterm. 42.5% of studied group was diagnosed with sepsis. Conclusion Early diagnosis is important for early intervention and treatment. This diagnosis in neonates is usually based on clinical and laboratory findings.

Association of delivery risk phenotype with early-onset sepsis in preterm infants.

To determine delivery risk phenotype-specific incidence of early-onset sepsis (EOS) among preterm infants. Retrospective cohort study of infants born <35 weeks' gestation at four perinatal centers during 2017-2021. Infants were classified into one of six delivery risk phenotypes incorporating delivery mode, presence of labor, and duration of rupture of membranes (ROM). The primary outcome was EOS incidence within the overall cohort and each risk phenotype. Among 2937 preterm infants, 21 had EOS (0.7%, or 7.1 cases/1000 preterm infants). The majority of EOS cases (13/21, 62%) occurred in the setting of prolonged ROM ≥ 18 h, with a phenotype incidence of 23.8 cases/1000 preterm infants. There were no EOS cases among infants born by cesarean section without ROM (with or without labor), nor via cesarean section with ROM < 18 h without labor. Delivery risk phenotyping may inform EOS risk stratification in preterm infants.

Clinical, Bacteriological Profile and Outcome of Neonatal Sepsis.

Sepsis is a major cause of morbidity and mortality among neonates in Nepal. This study was conducted to determine the clinical-bacteriological profile, their antibiotic susceptibility patterns, and clinical outcome of culture-positive neonatal sepsis. This was a prospective study conducted at B.P Koirala Institute of Health Sciences from July 2018 to June 2019. Neonates with clinically diagnosed sepsis having blood culture positive were included in the study. Blood samples culture and antimicrobial susceptibility testing were performed with the standard microbiological method. Demographic, clinical information, and clinical outcomes were documented. The incidence of culture-positive sepsis was 10.3% (183/1773) of neonatal admissions. Poor feeding 85(46%) and fever 68(37%) were the common clinical features at presentation. The incidence of early-onset sepsis and late-onset sepsis were found to be 116 (63%) and 67(37%) respectively. Staphylococcus aureus was the common pathogen in both early-onset 61(49%) and late-onset 34(41%) sepsis. The incidence of multidrug-resistant cases was 41% (75/183) with 20% (15/75) extensively drug-resistant gram-negative bacilli, 36% (20/75) multidrug-resistant gram-negative bacilli, and 44% (33/75) Methicillin-resistant Staphylococcus aureus cases. In-hospital mortality rate was 12 (7%) with a higher frequency in multidrug-resistant sepsis 92% (11/12) than non- multidrug-resistant 8% (1/12). The median hospital days were longer in multidrug-resistant cases than non- multidrug-resistant [11(9-13) verses 3(2-5)]. The incidence of multidrug-resistant pathogens causing neonatal sepsis is high at our hospital and are associated with more in-hospital mortality and longer hospital stay. Implementation of effective preventive strategies to combat the emergence of antimicrobial resistance is immediately needed.

Peculiarities of melatonin levels in preterm infants.

Melatonin plays an important role in organism functioning, child growth, and development. Of particular importance is melatonin for preterm infants. The aim of our research was to study the peculiarities of melatonin levels depending on various factors in preterm infants with gestational age (GA) of less than 34weeks. The study involved 104 preterm infants with GA less than 34weeks who were treated in the neonatal intensive care unit (NICU). The level of melatonin in urine samples was determined by an enzyme-linked immunosorbent assay. Melatonin concentration was significantly lower in extremely and very preterm infants compared to moderate preterm (3.57 [2.10; 5.06] ng/ml vs. 4.96 [3.20; 8.42] ng/ml, p = 0.007) and was positively correlated with GA (Spearman r = 0.32; p < 0.001). Positive correlations were revealed between melatonin levels and Apgar scores at the 1st(Spearman r = 0.31; p = 0.001) and 5thminutes after birth (Spearman r = 0.35; p < 0.001). Melatonin levels were lower in newborns with respiratory distress syndrome (p = 0.011). No significant correlations were found between melatonin concentration and birth weight (Spearman r = 0.15; p = 0.130). There were no associations of melatonin concentrations and mode of delivery (p = 0.914), the incidence of early-onset sepsis (p = 0.370) and intraventricular hemorrhages (p = 0.501), and mechanical ventilation (p = 0.090). The results of multiple regression showed that gestational age at birth was the most significant predictor of melatonin level in preterm infants (B = 0.507; p = 0.001). Gestational age and the Apgar score were associated with decreased melatonin levels in preterm infants. The level of melatonin in extremely and very preterm infants was lower compared to moderate preterm infants.

Analysis of Antibiotic Exposure and Early-Onset Neonatal Sepsis in Europe, North America, and Australia

Appropriate use of antibiotics is life-saving in neonatal early-onset sepsis (EOS), but overuse of antibiotics is associated with antimicrobial resistance and long-term adverse outcomes. Large international studies quantifying early-life antibiotic exposure along with EOS incidence are needed to provide a basis for future interventions aimed at safely reducing neonatal antibiotic exposure. To compare early postnatal exposure to antibiotics, incidence of EOS, and mortality among different networks in high-income countries. This is a retrospective, cross-sectional study of late-preterm and full-term neonates born between January 1, 2014, and December 31, 2018, in 13 hospital-based or population-based networks from 11 countries in Europe and North America and Australia. The study included all infants born alive at a gestational age greater than or equal to 34 weeks in the participating networks. Data were analyzed from October 2021 to March 2022. Exposure to antibiotics started in the first postnatal week. The main outcomes were the proportion of late-preterm and full-term neonates receiving intravenous antibiotics, the duration of antibiotic treatment, the incidence of culture-proven EOS, and all-cause and EOS-associated mortality. A total of 757 979 late-preterm and full-term neonates were born in the participating networks during the study period; 21 703 neonates (2.86%; 95% CI, 2.83%-2.90%), including 12 886 boys (59.4%) with a median (IQR) gestational age of 39 (36-40) weeks and median (IQR) birth weight of 3250 (2750-3750) g, received intravenous antibiotics during the first postnatal week. The proportion of neonates started on antibiotics ranged from 1.18% to 12.45% among networks. The median (IQR) duration of treatment was 9 (7-14) days for neonates with EOS and 4 (3-6) days for those without EOS. This led to an antibiotic exposure of 135 days per 1000 live births (range across networks, 54-491 days per 1000 live births). The incidence of EOS was 0.49 cases per 1000 live births (range, 0.18-1.45 cases per 1000 live births). EOS-associated mortality was 3.20% (12 of 375 neonates; range, 0.00%-12.00%). For each case of EOS, 58 neonates were started on antibiotics and 273 antibiotic days were administered. The findings of this study suggest that antibiotic exposure during the first postnatal week is disproportionate compared with the burden of EOS and that there are wide (up to 9-fold) variations internationally. This study defined a set of indicators reporting on both dimensions to facilitate benchmarking and future interventions aimed at safely reducing antibiotic exposure in early life.

Early-onset neonatal sepsis and antibiotic use in Indonesia: a descriptive, cross-sectional study

BackgroundEarly diagnosis and prompt antibiotic treatment are crucial to reducing morbidity and mortality of early-onset sepsis (EOS) in neonates. However, this strategy remains challenging due to non-specific clinical findings and limited facilities. Inappropriate antibiotics use is associated with ineffective therapy and adverse outcomes. This study aims to determine the characteristics of EOS and use of antibiotics in the neonatal-intensive care units (NICUs) in Indonesia, informing efforts to drive improvements in the prevention, diagnosis, and treatment of EOS.MethodsA descriptive study was conducted based on pre-intervention data of the South East Asia-Using Research for Change in Hospital-acquired Infection in Neonates project. Our study population consisted of neonates admitted within 72 h of life to the three participating NICUs. Neonates who presented with three or more clinical signs or laboratory results consistent with sepsis and who received antibiotics for 5 consecutive days were considered to have EOS. Culture-proven EOS was defined as positive blood or cerebrospinal fluid culture. Type and duration of antibiotics used were also documented.ResultsOf 2,509 neonates, 242 cases were suspected of having EOS (9.6%) with culture-proven sepsis in 83 cases (5.0% of neonatal admissions in hospitals with culture facilities). The causative organisms were mostly gram-negative bacteria (85/94; 90.4%). Ampicillin / amoxicillin and amikacin were the most frequently prescribed antibiotics in hospitals with culture facilities, while a third-generation cephalosporin was mostly administered in hospital without culture facilities. The median durations of antibiotic therapy were 19 and 9 days in culture-proven and culture-negative EOS groups, respectively.ConclusionsThe overall incidence of EOS and culture-proven EOS was high in Indonesia, with diverse and prolonged use of antibiotics. Prospective antibiotic surveillance and stewardship interventions are required.

Epidemiology and trends in neonatal early onset sepsis in California, 2010–2017

This study evaluated patterns of neonatal early onset sepsis (EOS) disease burden to guide approaches to EOS management. Retrospective cohort. A total of 1535 EOS cases were identified amongst 2,872,964 neonates born between 2010 and 2017 at 136 NICUs within the California Perinatal Quality Care Collaborative. EOS incidence was 7.4 per 1000 (E coli: 4.3, GBS: 1.1) in preterm, 0.76 per 1000 (E coli: 0.29, GBS: 0.22) in late preterm, and 0.31 per 1000 (E coli: 0.07, GBS 0.13) in term neonates. There was no significant change in overall incidence, though an increase in E coli (p < 0.001) and decrease in GBS (p = 0.04) incidence were noted. After adjusting for gestational age, there was no difference in the odds of death by pathogen (p > 0.2). The overall EOS incidence remained steady in California NICUs from 2010-2017, though an increase in E coli and decrease in GBS EOS incidence was noted.

Delivery Characteristics and the Risk of Early-Onset Neonatal Sepsis.

Multiple strategies are used to identify newborn infants at high risk of culture-confirmed early-onset sepsis (EOS). Delivery characteristics have been used to identify preterm infants at lowest risk of infection to guide initiation of empirical antibiotics. Our objectives were to identify term and preterm infants at lowest risk of EOS using delivery characteristics and to determine antibiotic use among them. This was a retrospective cohort study of term and preterm infants born January 1, 2009 to December 31, 2014, with blood culture with or without cerebrospinal fluid culture obtained ≤72 hours after birth. Criteria for determining low EOS risk included: cesarean delivery, without labor or membrane rupture before delivery, and no antepartum concern for intraamniotic infection or nonreassuring fetal status. We determined the association between these characteristics, incidence of EOS, and antibiotic duration among infants without EOS. Among 53 575 births, 7549 infants (14.1%) were evaluated and 41 (0.5%) of those evaluated had EOS. Low-risk delivery characteristics were present for 1121 (14.8%) evaluated infants, and none had EOS. Whereas antibiotics were initiated in a lower proportion of these infants (80.4% vs 91.0%, P < .001), duration of antibiotics administered to infants born with and without low-risk characteristics was not different (adjusted difference 0.6 hours, 95% CI [-3.8, 5.1]). Risk of EOS among infants with low-risk delivery characteristics is extremely low. Despite this, a substantial proportion of these infants are administered antibiotics. Delivery characteristics should inform empirical antibiotic management decisions among infants born at all gestational ages.

Association of Chorioamnionitis with Neonatal Sepsis and Mortality Rate Among Preterm Infants: A Meta-Analysis

horioamnionitis is an intra-amnion infection caused by various pathogens and increases the risk of preterm delivery. This study aims to analyze the association of chorioamnionitis with the incidence of neonatal sepsis and mortality rate among preterm infants. This systematic review and meta-analysis was conducted based on PRISMA guideline. All studies which evaluated chorioamnionitis with the incidence of neonatal sepsis and mortality rate among preterm infants were included in this study. We limited our search to 2001-2020. A total of 34 articles were screened. Nine cohorts were included according to inclusion criteria. Based on statistical analysis, chorioamnionitis was associated with the incidence of early-onset sepsis (OR=3.45; 95%CI=2.02-5.89; p &lt; 0.00001). Chorioamnionitis had a protective effect toward late-onset sepsis (OR=0.82; 95%CI=0.71-0.93; p=0.003) and not associated with mortality rate among preterm infants (OR 0.75; 95%CI=0.54-1.04; p=0.09). Chorioamnionitis was associated with higher risks of early-onset sepsis and lower risks of late-onset sepsis. However, the mortality rate among preterm infants with early-onset sepsis was not associated with chorioamnionitis.

Association Between Maternal and Neonatal Serum Vitamin D Levels and the Incidence of Early-Onset Sepsis

Background: Early-onset neonatal sepsis (EOS) is a systemic infection that occurs within the first week of life. Objectives: This study investigated the association of serum vitamin D levels in pregnant women and their neonates with the prevalence of EOS. Methods: This case-control study was performed among 50 term/late pre-term neonates admitted to our NICU due to EOS, alongside 50 healthy neonates matched for gestational age range and sex. Maternal and neonatal serum vitamin D levels were measured. The criteria for diagnosing EOS included any/combination of: respiratory, cardiovascular, hemodynamic, neurological, gastrointestinal, body temperature, or metabolic signs. For sepsis cases, CBC, CRP, blood type, blood culture, chest X ray, and in some cases, and CSF analysis and culture were tested. Mothers’ clinical history was collected. Results: Each group included 30 (60%) male and 20 (40%) female neonates. Birth weight averages were 2772 ± 667 and 3215 ± 349 grams in the case and control groups, respectively (P &lt; 0.001). The mean serum vitamin D levels were 49.75 ± 25.53 and 56.41 ± 18.17 nmol/L in the case and control groups, respectively. The control group mothers had a significantly higher vitamin D level (68.24 nmol/L versus 55.01 in mothers of sepsis cases, p = 0.005) and showed a correlation with the vitamin D levels of their neonates (R = 0.731, P &lt; 0.001), while the data failed to show a correlation between vitamin D level in mothers and their neonates in the sepsis group (R = 0.241, P = 0.115). C-section delivery was more prevalent among the sepsis cases (P &lt; 0.001). Conclusions: Early-onset neonatal sepsis is associated with vitamin D deficiency in neonates and their mothers, low birth weight, and being delivered by C-section.

Potential benefit from the implementation of the Kaiser Permanente neonatal early-onset sepsis calculator on clinical management of neonates with presumed sepsis.

To assess the potential benefit from the implementation of the Kaiser Permanente early-onset sepsis calculator (EOS-C), in terms of antibiotic use and requested laboratory tests, in a network of neonatal intensive care units (NICUs) in Greece, and to determine the incidence of early-onset sepsis (EOS) in Greek NICUs, a prospective surveillance study was conducted in 7 NICUs between April 2018 and June 2019. Data were collected for all newborns ≥ 34weeks' gestation receiving empiric antibiotic therapy within the first 3days of life. The number of live births and positive blood or cerebrospinal fluid cultures within the first 3days of life were used for calculation of EOS incidence. Evaluation of possible impact of implementing the calculator was done by comparing the clinicians' recorded management to the calculator's suggested course of action. The unit-specific incidence of culture-proven EOS ranged between 0 and 2.99/1000 live births. The weighted incidence rate for all 7 units was 1.8/1000 live births. Management of EOS guided by the calculator could lead to a reduction of empiric antibiotic initiation up to 100% for the group of "well-appearing" neonates and 86% for "equivocal," lowering exposure to antibiotics by 4.2 and 3.8days per neonate, respectively. Laboratory tests for blood cultures drawn could be reduced by up to 100% and 68%, respectively. Sensitivity of the EOS-C in identifying neonates with positive blood cultures was high.Conclusion: Management strategies based on the Kaiser Permanente neonatal sepsis calculator may significantly reduce antibiotic exposure, invasive diagnostic procedures, and hospitalizations in late preterm and term neonates. What is Known: • Neonates are frequently exposed to antibiotics for presumed EOS. • The Kaiser Permanente sepsis calculator can reduce antibiotic exposure in neonates.. What is New: • EOS calculator can be an effective antibiotic stewardship tool in a high prescribing country and can reduce invasive diagnostic procedures and mother-baby separation. • Incidence of EOS in Greece is higher compared to other European countries.

Clinical chorioamnionitis and histologic placental inflammation: association with early-neonatal sepsis

Objective Chorioamnionitis and fetal inflammatory response syndrome (FIRS) are significant risk factors for early onset sepsis (EOS). Recently, the use “Intrauterine Inflammation or Infection or both” or triple I has been proposed, classifying cases into an isolated maternal fever, suspected triple I, or confirmed chorioamnionitis. Evidence suggests that the association between suspected chorioamnionitis and confirmed histological chorioamnionitis (HCA) is not consistent, as well as the impact of HCA on the development of EOS. We aimed to evaluate the association between suspected chorioamnionitis and HCA, the impact of HCA on EOS, and the effect of antepartum antibiotic prophylaxis on EOS. Methods We retrospectively reviewed the medical records of all infants admitted to our institution, between 2017 and 2018, with a diagnosis of chorioamnionitis. We recorded the clinical evidence of chorioamnionitis, the histologic report of the placenta, the maternal and neonatal data, the neonatal inflammatory markers including C-reactive protein (CRP), and the incidence of EOS. The impact of antepartum antibiotic prophylaxis on the infants’ CRP and EOS was calculated, and the logistic regression model was performed to estimate the association of confirmed HCA with EOS, while controlling for FIRS stage, gestation age, birth weight, maternal fever, foul-smelling amniotic fluid, and prolonged rupture of membranes. Results During the study period, a total of 266 infants were identified; 81 (30%) infants had a confirmed HCA (HCA-present cases), and 185 (70%) infants were diagnosed with suspected triple I (HCA-absent cases). Antepartum antibiotics had been commenced in a significantly higher proportion in HCA-present cases (46%) in comparison to 14% of HCA-absent cases (p < .001). HCA-present infants were of significantly lower gestation (31.6 ± 4weeks versus 33.3 ± 4weeks, p = .004), and birth weight (1826 ± 840 g versus 2092 ± 849 g, p = .019), they had a significantly higher rate of clinical symptoms (31% versus 6%, p < .001), and a higher CRP at birth and 24 h (1.4 ± 1.5 mg/dL versus 0.3 ± 0.2 mg/dL, p < .001, and 2.1 ± 2.3 mg/dL versus 0.4 ± 0.6 mg/dL, p < .001, respectively). All HCA-present cases had evidence of FIRS; 43% were stage I, 25% stage II, and 32% were FIRS stage III. A significantly higher proportion of HCA-present infants were diagnosed with EOS (46% as compared to 6%, p < .001). The antepartum antibiotic administration was related to a significantly lower CRP at birth and 24 h only in HCA-present cases, albeit not with any reduction ιn EOS incidence. HCA was significantly associated with EOS (RR 3.18, 95% CI 2.81–5.18, p < .001). After adjusting for perinatal factors, the presence of HCA (OR 7.89, 95% CI 1.19-23.34, p = .032) and an advanced FIRS stage (OR 10.35, 95% CI 4.23–25.32, p < .001) were significantly associated with EOS. Conclusions Amongst infants with suspected chorioamnionitis, the diagnosis is partially supported by histological confirmation, and that is more prominent in pregnancies of a lower gestation. The presence of HCA and an advanced FIRS stage predispose to an increased risk of EOS after adjusting for other perinatal and neonatal factors. The antepartum prophylaxis against intra-amniotic infection was related to a significantly lower CRP in HCA-present cases.

Comparison of NICE Guideline CG149 and the Sepsis Risk Calculator for the Management of Early-Onset Sepsis on the Postnatal Ward

Introduction: The NICE guideline CG149 has increased the number of well infants receiving antibiotics for suspected early-onset sepsis (EOS). The Kaiser Permanente sepsis risk calculator (SRC) has safely and dramatically reduced investigations and antibiotics for suspected EOS in the USA. This study evaluates the current management of suspected EOS against the NICE guideline CG149 and the SRC. Methods: This study is a prospective, multicentre, observational study across 13 neonatal units in London. Infants were born between June and August 2019 at ≥34 weeks gestation and commenced on antibiotics for suspected EOS and cared for on postnatal/transitional care wards. Data were prospectively recorded: risk factors, clinical indicators, investigations, and results. Outcome measures included the following: (1) incidence of EOS and (2) proportion of infants recommended for antibiotics by NICE versus theoretical application of SRC. Results: 1,066/8,856 (12%) infants on postnatal/transitional care wards received antibiotics, 7 of whom had a positive blood culture (group B Streptococcus = 6 and Escherichia coli = 1), making the EOS incidence 0.8/1,000 infants. Six hundred one infants had data for SRC analysis, which recommended “antibiotics” or “blood culture” for 130/601 (21.6%) infants using an EOS incidence of 0.5/1,000 versus 527/601 (87.7%) if NICE was applied. Conclusions: Currently, 12.0% of infants on postnatal/transitional care wards receive antibiotics for suspected EOS. The SRC could dramatically reduce antibiotic use, but further prospective studies are required to evaluate safety of SRC implementation.

A clinical analysis of sepsis in very low birth weight infants

OBJECTIVE To study the incidence and clinical features of sepsis in very low birth weight (VLBW) infants. METHODS The clinical data were collected from VLBW infants, with a birth weight of < 1 500 g, who were admitted to the Department of Neonatology, Maternity Hospital Affiliated to Nanjing Medical University, from January 2019 to June 2020. The incidence of sepsis, distribution of pathogenic bacteria, and risk factors for sepsis were analyzed. RESULTS A total of 369 infants were enrolled, and 138 infants had sepsis, among whom 84 had early-onset sepsis (EOS) and 54 had late-onset sepsis (LOS). Enterococcus faecalis (24%) and Streptococcus (21%) were the main pathogenic bacteria in infants with EOS, and Staphylococcus (41%) and Enterobacter (29%) were the main pathogenic bacteria in infants with LOS. The incidence of EOS and LOS decreased with the increase of gestational age and birth weight (P < 0.05). The multivariate logistic regression analysis showed that a high birth weight was a protective factor against EOS (OR=0.996, 95%CI:0.993-0.998, P < 0.05), while vaginal delivery (OR=2.781, 95%CI:1.190-6.500, P < 0.05) was a risk factor for EOS, and long duration of parenteral nutrition was a risk factor for LOS (OR=1.129, 95%CI:1.067-1.194, P < 0.05). CONCLUSIONS Enterococcus faecalis is the most common pathogenic bacteria for EOS, and Staphylococcus is the most common pathogenic bacterium for LOS in VLBW infants. A high birth weight may reduce the risk of EOS in VLBW infants, while vaginal delivery may increase the risk of EOS. Prolonged parenteral nutrition may increase the risk of LOS.

An 18-year retrospective study on the epidemiology of early-onset neonatal sepsis - emergence of uncommon pathogens

Nationwide group B Streptococcus agalactiae (GBS) antepartum screening was instituted in Taiwan in 2012. The impact of the policy on early-onset sepsis (EOS) has not been evaluated. This study aimed to examine the impact of the policy on the incidence of neonatal EOS. This was a retrospective study conducted at MacKay Children's Hospital. Patients with culture-proven neonatal EOS were enrolled and divided by birth year in relation to the implementation of GBS prevention policy: Epoch 1, 2001-2004 pre-GBS screening; Epoch 2, 2005-2011 elective GBS screening; and Epoch 3, 2012-2018 universal GBS screening. The pathogens and antimicrobial resistance patterns were reviewed and analyzed. The incidence was modeled using Poisson regression. A total of 128 neonates met the enrollment criteria. The observed incidence of EOS was 1.52‰. The incidence rates of EOS, GBS, and Escherichia coli (E. coli) sepsis were similar in Epoch 1 and Epoch 3. E. coli and non-Enterococcal group D Streptococcus (GDS) infection increased significantly in term infants, whereas the EOS-related mortality rate declined in preterm infants. Approximately 72% of the isolated E. coli were ampicillin-resistant, and the antimicrobial sensitivity remained unaltered during the studied period. The overall EOS incidence has not changed from 2001 to 2018. However, changes in the causative pathogens were observed in both term and preterm infants. Clinicians should be aware of this evolving epidemiology to provide prompt appropriate perinatal management.