1
|
Charfi R, Guyonnet C, Untrau M, Giacometti G, Paper T, Poyart C, Plainvert C, Tazi A. Performances of two rapid LAMP-based techniques for the intrapartum detection of Group B Streptococcus vaginal colonization. Ann Clin Microbiol Antimicrob 2024; 23:37. [PMID: 38664821 PMCID: PMC11046945 DOI: 10.1186/s12941-024-00695-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
PURPOSE Group B Streptococcus (GBS) is the leading cause of invasive infections in newborns. The prevention of GBS neonatal disease relies on the administration of an intrapartum antibiotic prophylaxis to GBS-colonized women. In recent years, rapid intrapartum detection of GBS vaginal colonization using real-time nucleic acid amplification tests (NAATs) emerged as an alternative to antenatal culture screening methods. METHODS We compared the performances of two loop-mediated isothermal amplification (LAMP) tests, the Ampliflash® GBS and the PlusLife® GBS tests, to standard culture for GBS detection in vaginal specimens from pregnant women. The study was conducted from April to July 2023 in a French hospital of the Paris area. RESULTS A total of 303 samples were analyzed, including 85 culture-positive samples (28.1%). The Ampliflash® GBS test and the PlusLife® GBS tests gave a result for 100% and 96.3% tests, respectively. The performances of the tests were as follows: sensitivity 87.1% (95% confidence interval (CI) 78.3-92.6) and 98.7% (95% CI 93.0-99.8), specificity 99.1% (95% CI 96.7-99.8), and 91.9% (95% CI 87.3-95.0), respectively. False negative results of the Ampliflash® GBS test correlated with low-density GBS cultures. Time-to-results correlated with GBS culture density only for the PlusLife® GBS test (p < 0.001). CONCLUSION Both techniques provide excellent analytical performances with high sensitivity and specificity together with a short turnaround time and results available in 10 to 35 min. Their potential to further reduce the burden of GBS neonatal disease compared with antenatal culture screening needs to be assessed in future clinical studies.
Collapse
Affiliation(s)
- Rym Charfi
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, F-75014, France
- Service de Bactériologie, Centre National de Référence des Streptocoques, Assistance Publique - Hôpitaux de Paris Centre Université Paris Cité, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, Paris, 75014, France
| | - Cécile Guyonnet
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, F-75014, France
- Service de Bactériologie, Centre National de Référence des Streptocoques, Assistance Publique - Hôpitaux de Paris Centre Université Paris Cité, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, Paris, 75014, France
- Fédération Hospitalo-Universitaire Fighting Prematurity - FHU Préma, Paris, France
| | | | | | | | - Claire Poyart
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, F-75014, France
- Service de Bactériologie, Centre National de Référence des Streptocoques, Assistance Publique - Hôpitaux de Paris Centre Université Paris Cité, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, Paris, 75014, France
- Fédération Hospitalo-Universitaire Fighting Prematurity - FHU Préma, Paris, France
| | - Céline Plainvert
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, F-75014, France
- Service de Bactériologie, Centre National de Référence des Streptocoques, Assistance Publique - Hôpitaux de Paris Centre Université Paris Cité, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, Paris, 75014, France
- Fédération Hospitalo-Universitaire Fighting Prematurity - FHU Préma, Paris, France
| | - Asmaa Tazi
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, F-75014, France.
- Service de Bactériologie, Centre National de Référence des Streptocoques, Assistance Publique - Hôpitaux de Paris Centre Université Paris Cité, Hôpital Cochin, 27 rue du Faubourg Saint-Jacques, Paris, 75014, France.
- Fédération Hospitalo-Universitaire Fighting Prematurity - FHU Préma, Paris, France.
| |
Collapse
|
2
|
Alsheim E, Thet NT, Laabei M, Jenkins ATA. Development and early testing of a simple, low cost, fast sensor for maternal and neonatal group B Streptococcus. Biosens Bioelectron 2024; 247:115923. [PMID: 38118304 DOI: 10.1016/j.bios.2023.115923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/22/2023]
Abstract
Streptococcus agalactiae, (Group B Streptococcus (GBS)), is a common colonizer of the female vagina. In women giving birth it can be transmitted to the baby and cause serious illness and even death to the child. We have developed a biosensor comprising of phospholipids and fatty acids vesicles encapsulating high concentration, self-quenched carboxyfluorescein, which is released by the lysis of the vesicle by virulence factors expressed by GBS, becoming diluted and fluorescent. The microbial specificity of the sensor was tested against a number of GBS strains and other microbes including Candida albicans, Enterococcus faecalis and Staphylococcus epidermidis and a statistically significant response to GBS measured over these other microbes. To test the invivo efficacy of the biosensor, a pilot study using donated lower vaginal swabs from non-pregnant women was conducted, where 58 female adults were recruited. Participants donated two swabs, one which was used for the vesicle test and one for the 'gold standard', enriched culture media (ECM) test. An overall GBS carriage rate of 17.2% was measured using the ECM test. The vesicle biosensor test took 45 min to obtain a result, and showed a sensitivity of 83.3%, specificity of 85.7% and accuracy of 85.3%. The test accuracy is in line with current novel GBS identification tests, with the advantage of being rapid, easy to use, low-cost and able to be conducted by bedside during start of labour.
Collapse
Affiliation(s)
- Emelie Alsheim
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY, BATH, UK
| | - Naing Tun Thet
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY, BATH, UK
| | - Maisem Laabei
- Department of Life Science, University of Bath, Claverton Down, BA2 7AY, BATH, UK; School of Cellular and Molecular Medicine, University of Bristol, BS8 1TD, Bristol, UK.
| | - A Toby A Jenkins
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY, BATH, UK.
| |
Collapse
|
3
|
Schim van der Loeff I, Tsilifis C, Abdelhafiz K, Williams EJ. Recurrent group B stretococcus infection in an extremely premature infant: as a preterm neonate, infant and toddler. BMJ Case Rep 2023; 16:e255216. [PMID: 37507127 PMCID: PMC10387633 DOI: 10.1136/bcr-2023-255216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023] Open
Abstract
We report five discrete episodes of group B streptococcus (GBS) bacteraemia in an extremely premature infant, extending into early childhood. The first four episodes occurred during infancy despite appropriate treatment. Breastmilk was positive for group B streptococcal 16S DNA by polymerase chain reaction. The fifth episode occurred at 17 months of age, shortly after stopping antimicrobial prophylaxis.Radiological investigations did not identify a focus for recurrence of GBS bacteraemia, and immunological investigations and targeted whole genome sequencing yielded only transient hypogammaglobulinaemia of infancy, which resolved.This case highlights invasive GBS infection as a cause of infant morbidity. Premature infants are at particular risk of invasive as well as recurrent disease. GBS is typically a sensitive organism and each episode of GBS in our patient was effectively treated with penicillin. The role of breastmilk in recurrent GBS is controversial; in this case infant and mother isolated identical GBS serotypes and were concurrently treated with rifampicin.
Collapse
Affiliation(s)
- Ina Schim van der Loeff
- Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Christo Tsilifis
- Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Khalid Abdelhafiz
- Neonatalogy, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Eleri J Williams
- Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne, UK
| |
Collapse
|
4
|
Alotaibi NM, Alroqi S, Alharbi A, Almutiri B, Alshehry M, Almutairi R, Alotaibi N, Althoubiti A, Alanezi A, Alatawi N, Almutairi H, Alhmadi M, Almutairi R, Alshammari M. Clinical Characteristics and Treatment Strategies for Group B Streptococcus (GBS) Infection in Pediatrics: A Systematic Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1279. [PMID: 37512090 PMCID: PMC10383037 DOI: 10.3390/medicina59071279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/29/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023]
Abstract
Background and Objectives: Group B streptococcus (GBS) is the leading cause of infections in neonates with high fatality rates. GBS is caused by the streptococcus bacterium known as streptococcus agalactiae, which is highly contagious and can be transmitted from pregnant women to infants. GBS infection can occur as an early onset or late-onset infection and has different treatment strategies. Antibiotics are effective in treating GBS infections at early stages. The aim of this systematic review was to summarize the clinical characteristics and treatment strategies for GBS, with a focus on antibiotics. Material and Methods: The findings of this review were reported in accordance with the PRISMA 2020 guidelines and a flow diagram of the study selection process, a summary of the included studies, a description of the study characteristics, a summary of the results, a discussion of the implications of the findings, and a conclusion are included. Overall, the authors followed a rigorous methodology to ensure that this review is comprehensive and inclusive of relevant studies on GBS infection and its treatment. Results: Overall, 940 studies were reviewed and only the most relevant 22 studies were included in the systematic review. This review describes the characteristics of patients in different studies related to early onset GBS disease and presents various treatment strategies and outcomes for GBS infection in pediatrics. The studies suggest that preventive measures, risk-based intrapartum antibiotic prophylaxis, and maternal vaccination can significantly reduce the burden of GBS disease, but late-onset GBS disease remains a concern, and more strategies are required to decrease its rate. Improvement is needed in the management of the risk factors of GBS. A conjugate vaccine with a serotype (Ia, Ib, II, III, and V) has been proven effective in the prevention of GBS in neonates. Moreover, penicillin is an important core antibiotic for treating early onset GBS (EOD). Conclusions: This systematic review summarizes the treatment comparison for GBS infections in neonates, with a primary focus on antibiotics. IAP (intrapartum antibiotic prophylaxis) according to guidelines, antenatal screening, and the development of a conjugate vaccine may be effective and could lower the incidence of the disease.
Collapse
Affiliation(s)
- Nawaf M Alotaibi
- Department of Clinical Pharmacy, Northern Border University, Rafhaa 73213, Saudi Arabia
| | - Sharefa Alroqi
- Department of Clinical Pharmacy, Shaqra University, Al-Dawadimi 17472, Saudi Arabia
| | - Abdulrahman Alharbi
- Department of Pharmaceutical Care, King Faisal Specialist Hospital & Research Centre, Al Madinah Al Munawwarah 42355, Saudi Arabia
| | | | - Manal Alshehry
- Department of Clinical Pharmacy, King Khalid Hospital in IV & Nutrition TPN, Tabuk 32593, Saudi Arabia
| | - Rinad Almutairi
- Department of Clinical Pharmacy, Shaqra University, Al-Dawadimi 17472, Saudi Arabia
| | - Nada Alotaibi
- Department of Clinical Pharmacy, Shaqra University, Al-Dawadimi 17472, Saudi Arabia
| | - Atheer Althoubiti
- Hokmaa Taif Medical Complex, Kingdom of Saudi Arabia, Taif 21944, Saudi Arabia
| | - Ashwaq Alanezi
- College of Clinical Pharmacy, King Faisal University, Al-Ahasa 13890, Saudi Arabia
| | - Nouf Alatawi
- Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Hanan Almutairi
- Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Munira Alhmadi
- Department of Clinical Pharmacy, Shaqra University, Al-Dawadimi 17472, Saudi Arabia
| | - Rawan Almutairi
- Department of Clinical Pharmacy, Shaqra University, Al-Dawadimi 17472, Saudi Arabia
| | - Mohammed Alshammari
- Department of Pharmaceutical Care, Northern Border Cluster, Arar 73311, Saudi Arabia
| |
Collapse
|
5
|
Constantinou G, Ayers S, Mitchell EJ, Walker KF, Daniels J, Moore S, Jones AM, Downe S. Women's knowledge of and attitudes towards group B streptococcus (GBS) testing in pregnancy: a qualitative study. BMC Pregnancy Childbirth 2023; 23:339. [PMID: 37170236 PMCID: PMC10173516 DOI: 10.1186/s12884-023-05651-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 04/27/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND 20-25% pregnant women in the UK carry group B streptococcus (GBS) which, if left undetected, is transmitted from pregnant mothers to their babies during birth in 36% of cases. This transmission leads to early onset GBS infection (EOGBS) in 1% of babies which is a significant cause of mortality and morbidity in newborns. The literature available suggests women's knowledge of GBS is low, with many women unaware of the GBS bacterium. In addition, attitudes towards GBS testing have not been widely examined, with research mostly focusing on attitudes towards potential GBS vaccination. AIM To examine women's knowledge of GBS in pregnancy and their attitudes towards GBS testing. METHODS Semi-structured interviews with 19 women (5 pregnant and 14 postpartum). Interviews were transcribed and analysed using systematic thematic analysis. RESULTS Four main theme categories were identified. Participants had varying levels of awareness of GBS, with the information provided by health professionals not being clearly explained or the importance of GBS being downplayed. Participants wanted more information and to feel informed. Overall, the majority had positive attitudes towards being offered and taking up GBS testing, and this study identified some of the key factors influencing their decision. These included: seeing GBS testing as just another routine procedure during pregnancy; that it would lower the risk of their baby becoming unwell; provide reassurance; and allow them to prepare; and provide informed choices. Participants also expressed a few common concerns about GBS testing: questioning the invasiveness of the procedure; risks to themselves and the baby; and the risk of receiving antibiotics. CONCLUSIONS Women need clear, detailed information about GBS and GBS testing, and women's concerns are important to address if routine GBS testing is implemented. The efficacy of implementing routine universal testing in the UK is currently being investigated in a large multi-centre clinical trial; the GBS3trial, further qualitative research is needed to look at the acceptability of different methods of GBS testing, as well as the acceptability of GBS testing to women in specific groups, such as those planning a home birth or those from different ethnic backgrounds.
Collapse
Affiliation(s)
- Georgina Constantinou
- Centre for Maternal and Child Health, School of Health Sciences, City, University of London, Northampton Square, London, EC1V 0HB, UK.
| | - Susan Ayers
- Centre for Maternal and Child Health, School of Health Sciences, City, University of London, Northampton Square, London, EC1V 0HB, UK
| | - Eleanor J Mitchell
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Kate F Walker
- Population and Lifeorgdivision Unit, School of Medicine, University of Nottingham, Nottingham, UK
| | - Jane Daniels
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Sarah Moore
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Anne-Marie Jones
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Soo Downe
- School of Community Health and Midwifery, University of Central Lancashire, Preston, UK
| |
Collapse
|
6
|
Stephens K, Charnock-Jones DS, Smith GCS. Group B Streptococcus and the risk of perinatal morbidity and mortality following term labor. Am J Obstet Gynecol 2023; 228:S1305-S1312. [PMID: 37164497 DOI: 10.1016/j.ajog.2022.07.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 05/12/2023]
Abstract
Streptococcus agalactiae (group B Streptococcus) colonizes the genital tract of approximately 20% of pregnant women. In the absence of intervention, approximately 1% of infants born to colonized mothers exhibit a clinical infection. This has led to implementation of screening and intervention in the form of intrapartum antibiotic prophylaxis in many countries, including the United States. However, screening has not been introduced in a substantial minority of other countries because of the absence of supportive level 1 evidence, the very large number needed to treat to prevent 1 case, and concerns about antimicrobial resistance. Optimal screening would involve rapid turnaround (to facilitate intrapartum testing) and report antibiotic sensitivity, but no such method exists. There is significant scope for a personalized medicine approach, targeting intrapartum antibiotic prophylaxis to cases at greatest risk, but the pathogen and host factors determining the risk of invasive disease are incompletely understood. Epidemiologic data have indicated the potential of prelabor invasion of the uterus by group B Streptococcus, and metagenomic analysis revealed the presence of group B Streptococcus in the placenta in approximately 5% of pregnant women at term before onset of labor and membrane rupture. However, the determinants and consequences of prelabor invasion of the uterus by group B Streptococcus remain to be established. The vast majority (98%) of invasive neonatal disease is caused by 6 serotypes, and hexavalent vaccines against these serotypes have completed phase 2 trials. However, an obstacle to phase 3 studies is conducting an adequately powered trial to demonstrate clinical effectiveness given that early-onset disease affects approximately 1 in 1000 births in the absence of vaccination.
Collapse
Affiliation(s)
- Katie Stephens
- Department of Obstetrics and Gynaecology, University of Cambridge, Cambridge, United Kingdom
| | | | - Gordon C S Smith
- Department of Obstetrics and Gynaecology, University of Cambridge, Cambridge, United Kingdom.
| |
Collapse
|
7
|
Nusman CM, Snoek L, van Leeuwen LM, Dierikx TH, van der Weijden BM, Achten NB, Bijlsma MW, Visser DH, van Houten MA, Bekker V, de Meij TGJ, van Rossem E, Felderhof M, Plötz FB. Group B Streptococcus Early-Onset Disease: New Preventive and Diagnostic Tools to Decrease the Burden of Antibiotic Use. Antibiotics (Basel) 2023; 12:antibiotics12030489. [PMID: 36978356 PMCID: PMC10044457 DOI: 10.3390/antibiotics12030489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/18/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
The difficulty in recognizing early-onset neonatal sepsis (EONS) in a timely manner due to non-specific symptoms and the limitations of diagnostic tests, combined with the risk of serious consequences if EONS is not treated in a timely manner, has resulted in a low threshold for starting empirical antibiotic treatment. New guideline strategies, such as the neonatal sepsis calculator, have been proven to reduce the antibiotic burden related to EONS, but lack sensitivity for detecting EONS. In this review, the potential of novel, targeted preventive and diagnostic methods for EONS is discussed from three different perspectives: maternal, umbilical cord and newborn perspectives. Promising strategies from the maternal perspective include Group B Streptococcus (GBS) prevention, exploring the virulence factors of GBS, maternal immunization and antepartum biomarkers. The diagnostic methods obtained from the umbilical cord are preliminary but promising. Finally, promising fields from the newborn perspective include biomarkers, new microbiological techniques and clinical prediction and monitoring strategies. Consensus on the definition of EONS and the standardization of research on novel diagnostic biomarkers are crucial for future implementation and to reduce current antibiotic overexposure in newborns.
Collapse
Affiliation(s)
- Charlotte M. Nusman
- Department of Paediatrics, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Linde Snoek
- Department of Neurology, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Lisanne M. van Leeuwen
- Department of Paediatrics and Department of Vaccin, Infection and Immunology, Spaarne Hospital, Boerhaavelaan 22, 2035 RC Haarlem, The Netherlands
- Department of Paediatrics, Willem Alexander Children Hospital, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Thomas H. Dierikx
- Department of Pediatric Gastroenterology, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism Research Institute, Meibergdreef 69-71, 1105 BK Amsterdam, The Netherlands
| | - Bo M. van der Weijden
- Department of Paediatrics, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Department of Paediatrics, Tergooi Hospital, Rijksstraatweg 1, 1261 AN Blaricum, The Netherlands
| | - Niek B. Achten
- Department of Paediatrics, Erasmus University Medical Centre, Sophia Children’s Hospital, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Merijn W. Bijlsma
- Department of Paediatrics, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Douwe H. Visser
- Department of Neonatology, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Marlies A. van Houten
- Department of Paediatrics and Department of Vaccin, Infection and Immunology, Spaarne Hospital, Boerhaavelaan 22, 2035 RC Haarlem, The Netherlands
| | - Vincent Bekker
- Division of Neonatology, Department of Pediatrics, Willem Alexander Children’s Hospital, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Tim G. J. de Meij
- Department of Pediatric Gastroenterology, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism Research Institute, Meibergdreef 69-71, 1105 BK Amsterdam, The Netherlands
| | - Ellen van Rossem
- Department of Paediatrics, Flevo Hospital, Hospitaalweg 1, 1315 RA Almere, The Netherlands
| | - Mariet Felderhof
- Department of Paediatrics, Flevo Hospital, Hospitaalweg 1, 1315 RA Almere, The Netherlands
| | - Frans B. Plötz
- Department of Paediatrics, Emma Children’s Hospital, Amsterdam University Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Department of Paediatrics, Tergooi Hospital, Rijksstraatweg 1, 1261 AN Blaricum, The Netherlands
- Correspondence: ; Tel.: +31-88-753-3664
| |
Collapse
|
8
|
Kugelman N, Kleifeld S, Shaked-Mishan P, Assaf W, Marom I, Cohen N, Gruber M, Lavie O, Waisman D, Kedar R, Bardicef M, Damti A. Group B Streptococcus real-time PCR may potentially reduce intrapartum maternal antibiotic treatment. Paediatr Perinat Epidemiol 2022; 36:548-552. [PMID: 34888893 DOI: 10.1111/ppe.12841] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/30/2021] [Accepted: 11/14/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Protocols for preventing early-onset group B streptococcal (GBS) neonatal infection may result in unnecessary antibiotics administration. Real-time polymerase chain reaction (PCR) can provide a result within 30-60 min and has been found to be specific and sensitive for defining intrapartum GBS status. OBJECTIVE To evaluate whether implementation of GBS fast real-time PCR to all women who require GBS prophylaxis may reduce the use of maternal prophylactic antibiotics. METHODS This prospective cohort study included women admitted to a single delivery ward who required prophylactic antibiotics either due to a positive antepartum GBS culture screening performed at 35-37 weeks or due to an unknown GBS status with an intrapartum risk factor. All the women were tested by a double vaginal swab (real-time PCR and culture) as soon as it became apparent, they required antibiotic prophylaxis and prior to its administration. RESULTS Between May 2019 and August 2020, 303 women met eligibility criteria and were enrolled, but four were excluded from the analysis due to failed culture or PCR tests. Of 299 women included in the study, 208 (69.5%) and 180 (60.2%) women, showed no evidence of GBS on intrapartum culture or PCR, respectively. Of 89 GBS antepartum carriers, 43 (48.3%) and 32 (35.9%) had negative intrapartum culture and PCR results, respectively. Of the 210 women with risk factors, 165 (78.5%) were culture negative and 148 (70.4%) had a negative PCR. Using intrapartum culture as the gold standard, intrapartum GBS real-time PCR was found to have a sensitivity of 97.8% (95% confidence interval [CI] 92.3, 99.7) and a specificity of 85.6% (95% CI 80.1, 90.1). CONCLUSIONS Compared with antepartum universal culture screening or intrapartum risk-factor assessment, the need for maternal antibiotic treatment may be substantially reduced by implementation of intrapartum GBS real-time PCR, without compromising the sensitivity of GBS detection.
Collapse
Affiliation(s)
- Nir Kugelman
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Shiran Kleifeld
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | | | - Wisam Assaf
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Inbal Marom
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Nadav Cohen
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Maya Gruber
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Ofer Lavie
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Dan Waisman
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Department of Neonatology, Carmel Medical Center, Haifa, Israel
| | - Reuven Kedar
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Mordehai Bardicef
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Amit Damti
- Department of Obstetrics & Gynecology, Carmel Medical Center, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| |
Collapse
|
9
|
Dietz J, Plumb J, Banfield P, Soe A, Chehadah F, Chang-Douglass S, Rogers G. Immediate birth for women between 34 and 37 weeks of gestation with prolonged preterm prelabour rupture of membranes and detection of vaginal or urine group B streptococcus: an economic evaluation. BJOG 2022; 129:1779-1789. [PMID: 35137528 PMCID: PMC9543209 DOI: 10.1111/1471-0528.17119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/20/2021] [Accepted: 01/04/2022] [Indexed: 11/26/2022]
Abstract
Objective What are the costs, benefits and harms of immediate birth compared with expectant management in women with prolonged preterm prelabour rupture of membranes (PPROM) at 34+0–36+6 weeks of gestation and detection of vaginal or urine group B streptococcus (GBS)? Design Mathematical decision model comprising three independent decision trees. Setting UK National Health Service (NHS) and personal social services perspective. Population Women testing positive for GBS with PPROM at 34+0–36+6 weeks of gestation. Methods The model estimates lifetime costs and quality‐adjusted life years (QALYs) using evidence from randomised trials, UK NHS data sources and further observational studies. Simulated events include neonatal infections, morbidity associated with preterm birth and consequences of caesarean birth. Deterministic and probabilistic sensitivity analyses (PSAs) were performed. Main outcome measures QALYs, costs and incremental cost‐effectiveness ratio (ICER). Results In this population, immediate birth dominates expectant management: it is more effective (average lifetime QALYs, 24.705 versus 24.371) and it is cheaper (average lifetime costs, £14,372 versus £19,311). In one‐way sensitivity analysis, results are robust to all but the odds ratio estimating the relative effect on incidence of infections. Threshold analysis shows that the odds of infection only need to be >1.5% with expectant management for the benefit of avoiding infections to outweigh the disadvantages of immediate birth. In PSA, immediate birth is the preferred option in >80% of simulations. Conclusions Neonatal GBS infections are expensive to treat and may result in substantial adverse health consequences. Therefore, immediate birth, which is associated with a reduced risk of neonatal infection compared with expectant management, is expected to generate better health outcomes and decreased lifetime costs. Tweetable abstract For women with preterm prelabour rupture of membranes and group B streptococcus in vaginal or urine samples, immediate birth is associated with improved health in their babies and reduced costs, compared with expectant management. For women with preterm prelabour rupture of membranes and group B streptococcus in vaginal or urine samples, immediate birth is associated with improved health in their babies and reduced costs, compared with expectant management.
Collapse
Affiliation(s)
- Jeremy Dietz
- Centre for Guidelines, National Institute for Health and Care Excellence (NICE), London, UK
| | - Jane Plumb
- Group B Strep Support, Haywards Heath, West Sussex, UK
| | | | - Aung Soe
- Oliver Fisher Neonatal Unit, Medway Maritime Hospital, Gillingham, Kent, UK
| | - Fadi Chehadah
- Centre for Guidelines, National Institute for Health and Care Excellence (NICE), Manchester, UK
| | - Stacey Chang-Douglass
- Centre for Guidelines, National Institute for Health and Care Excellence (NICE), London, UK
| | - Gabriel Rogers
- Division of Population Health, Manchester Centre for Health Economics, The University of Manchester, Manchester, UK
| |
Collapse
|
10
|
Li J, Xia S, Liu Y, Zhang S, Jin Z. Bacteriological Profile and Antibiotic Susceptibility Pattern of Neonatal Septicemia and Associated Factors of ICU Hospitalization Days. Infect Drug Resist 2022; 15:427-438. [PMID: 35177910 PMCID: PMC8846624 DOI: 10.2147/idr.s341536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/06/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose To evaluate the microorganisms involved in neonatal septicemia and its antibiotic susceptibility pattern and to further investigate the factors associated with the length of intensive care unit (ICU) stay in neonatal septicemia. Patients and Methods A total of 297 infants with septicemia at neonatal ICU (NICU), Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology from 2016 to 2020 were enrolled. Identification of bacterial species was done using the standard positive blood culture. Data included demographics, signs at time of septicemia, laboratory values, patient sources, complications, microbiologic characteristics, and the duration of ICU stay. Univariate and multivariate gamma regression analyses were applied to determine the variables associated with ICU stay. Results The result demonstrated that the main causative pathogens of neonatal septicemia in our hospital were Gram-positive bacteria, among which Staphylococcus epidermidis (100 isolates, 47.17%) was the main conditional pathogens; Escherichia coli (27 isolates, 49.09%) was most frequently isolated among Gram-negative pathogens. Gram-positive bacteria had higher susceptibility to vancomycin, tigecycline and linezolid. Escherichia coli was susceptive to piperacillin (27/27, 100.00%), cefotetan (27/27, 100.00%), meropenem and imipenem (27/27, 100.00%). Streptococcus agalactiae (95% CI: 0.140–0.539), for patients who were transferred from other hospital (95% CI: 0.016 to 0.354), septicemia during hospitalization (95% CI: 0.411 to 0.825), the use of antibacterial drug during pregnancy (95% CI: 0.362 to 2.136), feeding intolerance (95% CI: 0.127 to 0.437), bradycardia (95% CI: 0.196 to 0.838), septicemia newborns have complications (95% CI: 0.063 to 0.291), the onset age (95% CI: 0.006 to 0.023), TRIPS score (95% CI: 0.005 to 0.016), and CRP level (95% CI: 0.002 to 0.005) were related to prolonged ICU stay days. Conclusion This study summarized common pathogens and associated drug sensitivity, and factors influencing ICU stay length. Prevention and control policy in the NICU should be strengthened.
Collapse
Affiliation(s)
- Jinchun Li
- Department of Neonatology, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| | - Shiwen Xia
- Department of Neonatology, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
- Correspondence: Shiwen Xia, Tel +86 027-65395034, Fax +86 027-87163133, Email ;
| | - Yong Liu
- Department of Neonatology, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| | - Shasha Zhang
- Department of Pharmacy, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| | - Zhengjiang Jin
- Department of Clinical Laboratory, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430070, China
| |
Collapse
|
11
|
Plainvert C, Anselem O, Joubrel C, Marcou V, Falloukh A, Frigo A, Magdoud El Alaoui F, Ancel PY, Jarreau PH, Mandelbrot L, Goffinet F, Poyart C, Tazi A. Persistence of group B Streptococcus vaginal colonization and prevalence of hypervirulent CC-17 clone correlate with the country of birth: a prospective 3-month follow-up cohort study. Eur J Clin Microbiol Infect Dis 2020; 40:133-140. [PMID: 32812077 DOI: 10.1007/s10096-020-04011-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/11/2020] [Indexed: 01/10/2023]
Abstract
To identify factors associated with vaginal colonization and persistence by group B Streptococcus (GBS) and by the hypervirulent neonatal CC-17 clone in late pregnancy and after delivery, a multicentre prospective observational cohort with 3-month follow-up was established in two university hospitals, Paris area, France. Pregnant women were recruited when antenatal screening for GBS vaginal colonization at 34-38 weeks of gestational age was positive. Vaginal samples were analysed by conventional culture methods at antenatal screening, delivery, and 21 and 60 days following delivery. Identification of the hypervirulent neonatal GBS CC-17 was performed. Colonization was defined as persistent when all vaginal samples were positive for GBS. A total of 754 women were included. GBS vaginal colonization was persistent in 63% of the cases (95% CI 59%-67%). Persistent colonization was more likely in women born in Sub-Saharan Africa compared with women born in France (OR = 1.88, 95% CI 1.05-3.52), and GBS CC-17 was overrepresented in women born in Sub-Saharan Africa (OR = 2.09, 95% CI 1.20-3.57). Women born in Sub-Saharan Africa are at higher risk for GBS vaginal persistence than women born in France. This observation correlates with an increased prevalence of the hypervirulent GBS CC-17 in the former group, which likely reflect variations linked to ethnicity and vaginal community-state types and might account for the increased susceptibility of black neonates to GBS infections.
Collapse
Affiliation(s)
- Céline Plainvert
- Department of Bacteriology, University Hospitals Paris Centre Cochin Port Royal, French National Reference Centre for Streptococci, AP-HP, Paris, France
- FHU Prema, Paris, France
| | - Olivia Anselem
- FHU Prema, Paris, France
- Department of Obstetrics and Gynaecology, Port-Royal Maternity, University Hospitals Paris Centre Cochin Port Royal, AP-HP, Paris, France
| | - Caroline Joubrel
- Department of Bacteriology, University Hospitals Paris Centre Cochin Port Royal, French National Reference Centre for Streptococci, AP-HP, Paris, France
- FHU Prema, Paris, France
| | - Valérie Marcou
- FHU Prema, Paris, France
- Department of Neonatal Medicine, University Hospitals Paris Centre Cochin Port Royal, AP-HP, Paris, France
| | - Amiel Falloukh
- Department of Neonatal Medicine, Louis Mourier Hospital, AP-HP, Colombes, France
| | - Amandine Frigo
- Department of Bacteriology, University Hospitals Paris Centre Cochin Port Royal, French National Reference Centre for Streptococci, AP-HP, Paris, France
- FHU Prema, Paris, France
| | - Fatma Magdoud El Alaoui
- Department of Microbiology, Louis Mourier Hospital, AP-HP, Colombes, France
- Université de Paris, Paris, France
| | - Pierre-Yves Ancel
- Université de Paris, Paris, France
- Obstetrical, Perinatal and Paediatric Epidemiology Research Team (EPOPé), INSERM UMR 1153, Paris, France
- URC-CIC P1419, University Hospitals Paris Centre Cochin Port Royal, AP-HP, Paris, France
| | - Pierre Henri Jarreau
- FHU Prema, Paris, France
- Department of Neonatal Medicine, University Hospitals Paris Centre Cochin Port Royal, AP-HP, Paris, France
- Université de Paris, Paris, France
| | - Laurent Mandelbrot
- FHU Prema, Paris, France
- Université de Paris, Paris, France
- Department of Obstetrics and Gynaecology, Louis Mourier Hospital, AP-HP, Colombes, France
| | - François Goffinet
- Department of Obstetrics and Gynaecology, Port-Royal Maternity, University Hospitals Paris Centre Cochin Port Royal, AP-HP, Paris, France
- Université de Paris, Paris, France
- Obstetrical, Perinatal and Paediatric Epidemiology Research Team (EPOPé), INSERM UMR 1153, Paris, France
| | - Claire Poyart
- Department of Bacteriology, University Hospitals Paris Centre Cochin Port Royal, French National Reference Centre for Streptococci, AP-HP, Paris, France
- FHU Prema, Paris, France
- Université de Paris, Paris, France
| | - Asmaa Tazi
- Department of Bacteriology, University Hospitals Paris Centre Cochin Port Royal, French National Reference Centre for Streptococci, AP-HP, Paris, France.
- FHU Prema, Paris, France.
- Université de Paris, Paris, France.
| |
Collapse
|
12
|
Le Doare K, Heath PT, Plumb J, Owen NA, Brocklehurst P, Chappell LC. Uncertainties in Screening and Prevention of Group B Streptococcus Disease. Clin Infect Dis 2020; 69:720-725. [PMID: 30561556 PMCID: PMC6669315 DOI: 10.1093/cid/ciy1069] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/11/2018] [Indexed: 01/29/2023] Open
Abstract
In autumn 2016, the UK Department of Health (now Department of Health and Social Care) convened 2 meetings to discuss how to address research evidence gaps in order to minimize the impact of infant group B streptococcus (GBS) disease in the United Kingdom. At that meeting, a number of research priorities were highlighted, including improving the screening for GBS colonization in pregnant women, offering intrapartum antibiotic prophylaxis and point-of-care testing, and understanding the effect of widespread intrapartum antibiotic use on long-term infant health. Further discussions involved investigating the feasibility of a large prospective study of pregnant women and their infants in order to understand the role of antibodies in the protection against GBS disease in infancy following maternal exposure to GBS colonization. Here, we summarize the research uncertainties identified at that meeting.
Collapse
Affiliation(s)
- Kirsty Le Doare
- Paediatric Infectious Disease Research Group & Vaccine Institute, St George's University of London, London, United Kingdom
| | - Paul T Heath
- Paediatric Infectious Disease Research Group & Vaccine Institute, St George's University of London, London, United Kingdom
| | - Jane Plumb
- Group B Strep Support, London, United Kingdom
| | - Natalie A Owen
- Science, Research and Evidence, Department of Health and Social Care, London, United Kingdom
| | - Peter Brocklehurst
- Birmingham Clinical Trials Unit, University of Birmingham, London, United Kingdom
| | - Lucy C Chappell
- Department of Obstetrics, King's College London, London, United Kingdom
| |
Collapse
|
13
|
Wang M, Keighley C, Watts M, Plymoth M, McGee TM. Preventing Early-Onset Group B Streptococcus neonatal infection and reducing antibiotic exposure using a rapid PCR test in term prelabour rupture of membranes. Aust N Z J Obstet Gynaecol 2020; 60:753-759. [PMID: 32291755 DOI: 10.1111/ajo.13159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/07/2020] [Indexed: 01/25/2023]
Abstract
BACKGROUND How best to target intrapartum antibiotic prophylaxis (IAP) to minimise both Early-Onset Group B Streptococcus (EOGBS) neonatal infection and maternal/fetal antibiotic exposure is uncertain, with both routine-screening and risk-factor approaches available. AIMS This retrospective cohort study was undertaken to examine the outcomes of a hybrid risk-and-screen approach to EOGBS prevention using GBS polymerase chain reaction (PCR). The target population was women with term prelabour rupture of membranes (TermPROM) having the risk factor of prolonged rupture of membranes (ROM) ≥18 h. MATERIALS AND METHODS Non-labouring TermPROM women had rapid GBS PCR testing at presentation. GBS screen-positive women proceeded to induction of labour and received IAP. GBS screen-negative women were allowed home to await spontaneous labour and not given IAP regardless of duration of ROM, unless other risk factors developed. For all other women, the risk-factor approach was followed. RESULTS From 2009 to 2018, there were 20 cases of culture-positive EOGBS, a rate of 0.36/1000 live births (95% CI 0.22-0.56/1000), comparable to other recent reports. Over 2010-2018 when laboratory data were available, 1120 TermPROM women with ROM ≥18 h avoided antibiotics because they were GBS PCR-negative (2.3% of all births, 3.6% of vaginal births) while 338 TermPROM women with ROM <18 h received targeted antibiotics for being GBS-positive. No cases of EOGBS occurred in TermPROM women, those with ROM ≥18 h, or due to protocol-compliance failure. CONCLUSIONS A hybrid approach involving risk-factor-based IAP and intrapartum GBS PCR screening of non-labouring TermPROM women delivers acceptably low rates of EOGBS while minimising and better targeting antibiotic exposure.
Collapse
Affiliation(s)
- Mandy Wang
- Department of Women's and Newborn Health, Westmead Hospital, Sydney, New South Wales, Australia.,Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia
| | - Caitlin Keighley
- Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia.,Centre for Infectious Diseases and Microbiology Public Health, Institute for Clinical Pathology and Medical Research-New South Wales Health Pathology, Westmead Hospital, Sydney, New South Wales, Australia
| | - Matthew Watts
- Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia.,Centre for Infectious Diseases and Microbiology Public Health, Institute for Clinical Pathology and Medical Research-New South Wales Health Pathology, Westmead Hospital, Sydney, New South Wales, Australia
| | | | - Therese M McGee
- Department of Women's and Newborn Health, Westmead Hospital, Sydney, New South Wales, Australia.,Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia
| |
Collapse
|
14
|
Lacey L, Daulton E, Wicaksono A, Covington JA, Quenby S. Detection of Group B Streptococcus in pregnancy by vaginal volatile organic compound analysis: a prospective exploratory study. Transl Res 2020; 216:23-29. [PMID: 31585066 DOI: 10.1016/j.trsl.2019.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/05/2019] [Accepted: 09/09/2019] [Indexed: 12/19/2022]
Abstract
Our objective was to assess whether volatile organic compound (VOC) analysis of vaginal swabs can detect maternal Group B Streptococcus (GBS) during pregnancy in a prospective exploratory study. Around 243 women attending a high-risk antenatal clinic at one university teaching hospital in the UK consented to take part and provide vaginal swabs throughout pregnancy. VOC analysis of vaginal swabs was undertaken and compared with the reference standard of GBS detected using enrichment culture method. The chemical components that emanated from the vaginal swabs were measured by gas chromatograph ion mobility spectrometry. This platform has both high sensitivity and good specificity to a range of chemical compounds. Our main outcome was to determine the sensitivity and specificity of VOC analysis for the detection of maternal GBS in vaginal swabs during pregnancy. Our study has demonstrated that the sensitivity and specificity of the VOC analysis by GC-IMS for the detection of GBS from vaginal swabs was 0.81 (95% confidence interval [CI], 0.71-0.89) and 0.97 (95% CI, 0.91-1) respectively. We conclude that the use of VOCs as biomarkers for the detection of maternal GBS in the vagina is a novel tool. As this test produces results within minutes and is of low unit test cost, it has the potential to be used in clinical settings, where fast diagnosis is important, for example, a patient in early labour.
Collapse
Affiliation(s)
- Lauren Lacey
- Warwick Medical School, University of Warwick, Coventry, United Kingdom; Department of Obstetrics & Gynaecology, University Hospitals Coventry & Warwickshire, Coventry, United Kingdom.
| | - Emma Daulton
- School of Engineering, University of Warwick, Coventry, United Kingdom
| | - Alfian Wicaksono
- School of Engineering, University of Warwick, Coventry, United Kingdom
| | - James A Covington
- School of Engineering, University of Warwick, Coventry, United Kingdom
| | - Siobhan Quenby
- Warwick Medical School, University of Warwick, Coventry, United Kingdom; Department of Obstetrics & Gynaecology, University Hospitals Coventry & Warwickshire, Coventry, United Kingdom
| |
Collapse
|
15
|
Subramaniam A, Blanchard CT, Ngek ESN, Mbah R, Welty E, Welty T, Dionne-Odom J, Sander M, Halle-Ekane G, Tita ATN. Prevalence of group B streptococcus anogenital colonization and feasibility of an intrapartum screening and antibiotic prophylaxis protocol in Cameroon, Africa. Int J Gynaecol Obstet 2019; 146:238-243. [PMID: 31127871 DOI: 10.1002/ijgo.12870] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/10/2019] [Accepted: 05/23/2019] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To evaluate group B streptococcus (GBS) colonization prevalence and feasibility of intrapartum GBS screening/antibiotic prophylaxis (IAP) in Cameroon, Africa. METHODS Prospective cohort in the Cameroon Baptist Convention Health Services network. Maternity providers collected anogenital swabs from consenting term women in labor for testing by a rapid GBS-polymerase chain reaction (PCR) system. Positive tests (GBS+) resulted in initiation of intravenous ampicillin until delivery. Primary outcomes were GBS prevalence and proportion of GBS+ women receiving ampicillin before delivery and more than 4 hours before delivery. RESULTS A total of 219 women were enrolled from January 10 to April 27, 2017. GBS prevalence was 12.3% (95% confidence interval [CI] 7.9-16.7) with GBS+ women more likely to reside in urban areas (19.6% vs 9.7%, P=0.004). Of 27 GBS+ women, 19 (70.4%) received ampicillin before delivery and 14 (51.9%) 4 hours or longer before delivery. A median two doses of ampicillin (interquartile range [IQR] 1-5) were given and started at a median of 105 minutes (IQR 90-155) after swab collection and 20 minutes (IQR 10-45) after GBS result. Of the 8 women who did not receive ampicillin, 7 (87.5%) delivered before test results. CONCLUSION A GBS IAP protocol is feasible in Cameroon and should be evaluated for widespread implementation in Cameroon and other low-income countries to decrease GBS-related morbidity.
Collapse
Affiliation(s)
- Akila Subramaniam
- Department of Obstetrics and Gynecology and Center for Women's Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Christina T Blanchard
- Department of Obstetrics and Gynecology and Center for Women's Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Rahel Mbah
- Cameroon Baptist Convention Health Services, Bamenda, Cameroon
| | - Edith Welty
- Cameroon Baptist Convention Health Services, Bamenda, Cameroon
| | - Thomas Welty
- Cameroon Baptist Convention Health Services, Bamenda, Cameroon
| | - Jodie Dionne-Odom
- Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Melissa Sander
- Bamenda Center for Health Promotion and Research, Bamenda, Cameroon
| | | | - Alan T N Tita
- Department of Obstetrics and Gynecology and Center for Women's Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | -
- Department of Obstetrics and Gynecology and Center for Women's Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
| |
Collapse
|
16
|
Bevan D, White A, Marshall J, Peckham C. Modelling the effect of the introduction of antenatal screening for group B Streptococcus (GBS) carriage in the UK. BMJ Open 2019; 9:e024324. [PMID: 30904850 PMCID: PMC6475221 DOI: 10.1136/bmjopen-2018-024324] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES To estimate the potential impact of the addition of culture-based screening for group B streptococcus (GBS) carriage in pregnancy to a risk-based prevention policy in the UK. We aimed to establish agreement within a multidisciplinary group of key stakeholders on the model input parameters. DESIGN Deterministic model using a consensus approach for the selection of input parameters. SETTING AND PARTICIPANTS A theoretical annual cohort of 711 999 live births in the UK (excluding births by elective caesarean section). INTERVENTIONS Culture-based screening for GBS at 35-37 weeks of pregnancy added to the recommended risk-based prevention policy in place on the date of modelling. OUTCOME MEASURES Outcomes assessed included use of intrapartum antibiotic prophylaxis (IAP), early onset GBS (EOGBS), EOGBS mortality, severe EOGBS-related morbidity and maternal penicillin anaphylaxis. RESULTS With no prophylaxis strategy, the model estimated that there would be 421 cases of culture positive EOGBS in a year (0.59/1000 live births). In the risk-based prophylaxis scenario, 30 666 women were estimated to receive IAP and 70 cases of EOGBS were prevented. Addition of screening resulted in a further 96 260 women receiving IAP and the prevention of an additional 52 to 57 cases of EOGBS. This resulted in the prevention of three EOGBS deaths and four cases of severe disability. With screening, an additional 1675 to 1854 women receive IAP to prevent one EOGBS case and 24 065 to 32 087 receive IAP to prevent one EOGBS death. CONCLUSIONS The evidence base available for a broad range of model input parameters was limited, leading to uncertainty in the estimates produced by the model. Where data was limited, the model input parameters were agreed with the multidisciplinary stakeholder group, the first time this has been done to our knowledge. The main impact of screening is likely to be on the large group of low-risk women where the clinical impact of EOGBS tends to be less severe. This model suggests that the reduction in mortality and severe disability due to EOGBS with antenatal GBS screening is likely to be very limited, with a high rate of overdetection and overuse of antibiotics.
Collapse
Affiliation(s)
- David Bevan
- Department of Health and Human Services, Melbourne, Australia
| | | | | | - Catherine Peckham
- Department of Paediatric Epidemiology Unit, University College London, London, UK
| |
Collapse
|
17
|
Clinical impact of rapid polymerase chain reaction (PCR) test for group B Streptococcus (GBS) in term women with ruptured membranes. Ir J Med Sci 2019; 188:1269-1274. [PMID: 30706295 DOI: 10.1007/s11845-019-01977-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/24/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Early-onset group B Streptococcus (EOGBS/GBS) infection remains a significant cause of neonatal morbidity and mortality. AIMS Aiming to improve antimicrobial stewardship and reduce unnecessary maternal and infant exposure to intrapartum antibiotic prophylaxis (IAP), this study assessed the clinical use of a commercially available GBS polymerase chain reaction (PCR) assay for term women with pre-labour rupture of membranes. METHODS This was a retrospective study in a tertiary level maternity unit of term women with pre-labour rupture of membranes (ROM), without any clinical suspicion of infection performed between November and December 2017. GBS PCR tests were cross-referenced with patient clinical data. PCR test results, the impact of testing on antibiotic administration, pyrexia in labour, induction, interventional delivery rates and neonatal outcomes were analysed. RESULTS Of 200 patients included in the study, 29 were positive (14.5%) and 166 were negative (83%), with five invalid results (2.5%). One hundred and twenty three women had > 18-h ruptured membranes and 86 women (70%) who would have been eligible for IAP based on risk factors avoided antibiotic therapy following a negative PCR test. There were no significant differences in induction or interventional delivery rates between GBS-positive and GBS-negative women following PCR testing. During the study period, there were no cases of EOGBS. CONCLUSIONS In a centre adhering to a risk-factor-based GBS policy, the introduction of limited rapid GBS screening for term women with pre-labour rupture of membranes resulted in a clinically significant reduction in prophylactic antibiotic use.
Collapse
|
18
|
Khalil MR, Uldbjerg N, Thorsen PB, Møller JK. Risk-based approach versus culture-based screening for identification of group B streptococci among women in labor. Int J Gynaecol Obstet 2018; 144:187-191. [PMID: 30467848 DOI: 10.1002/ijgo.12721] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/24/2018] [Accepted: 11/21/2018] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To compare a risk-based and culture-based screening approach for identification of group B streptococci (GBS) vaginal colonization using an intrapartum rectovaginal culture as the reference standard. METHODS Pregnant women attending the prenatal clinic at Lillebaelt Hospital, Kolding, Denmark, between April 1, 2013, and June 30, 2014, were invited to participate in a prospective observational study. For prepartum culture-based screening, vaginal and rectal culture samples were obtained and, for reference, standard, paired vaginal and rectal culture samples were collected during labor. Risk factors for risk-based screening were previous early-onset GBS, GBS bacteriuria during pregnancy, maternal temperature ≥38.0°C intrapartum, and rupture of membranes for more than 18 hours. RESULTS The intrapartum rectovaginal GBS colonization rate was 30% (32/108) among participants with risk factors and 15% (123/794) among participants without risk factors. Culture-based screening demonstrated a sensitivity, specificity, positive predictive value, negative predictive value, and positive likelihood ratio in predicting intrapartum GBS carriage of 78% (95% confidence interval [CI] 71-84), 95% (94-97), 78% (70-84), 95% (94-97), and 17 (12-23), respectively; for risk-based screening, these values were 21% (15-28), 90% (87-92), 30% (22-38), 85% (83-86), and 2 (1-3), respectively. CONCLUSIONS Culture-based screening performed considerably better than a risk-based approach in identifying intrapartum GBS colonization.
Collapse
Affiliation(s)
- Mohammed R Khalil
- Department of Obstetrics and Gynecology, Lillebaelt Hospital, Kolding, Denmark
| | - Niels Uldbjerg
- Department of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark
| | - Poul B Thorsen
- Research Unit for Gynecology and Obstetrics, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jens K Møller
- Department of Clinical Microbiology, Lillebaelt Hospital, Vejle, Denmark
| |
Collapse
|
19
|
O'Sullivan CP, Lamagni T, Patel D, Efstratiou A, Cunney R, Meehan M, Ladhani S, Reynolds AJ, Campbell R, Doherty L, Boyle M, Kapatai G, Chalker V, Lindsay D, Smith A, Davies E, Jones CE, Heath PT. Group B streptococcal disease in UK and Irish infants younger than 90 days, 2014-15: a prospective surveillance study. THE LANCET. INFECTIOUS DISEASES 2018; 19:83-90. [PMID: 30497953 DOI: 10.1016/s1473-3099(18)30555-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/23/2018] [Accepted: 09/03/2018] [Indexed: 01/27/2023]
Abstract
BACKGROUND Group B streptococcus is a leading cause of serious infection in young infants in many countries worldwide. We aimed to define the burden and clinical features of invasive group B streptococcal disease in infants younger than 90 days in the UK and Ireland, together with the characteristics of disease-causing isolates. METHODS Prospective, active national surveillance of invasive group B streptococcal disease in infants younger than 90 days was done from April 1, 2014, to April 30, 2015, through the British Paediatric Surveillance Unit, microbiology reference laboratories, and national public health agencies in the UK and Ireland. Early onset was defined as disease in the first 6 days of life and late onset was defined as 7-89 days of life. Incidence was calculated using livebirths in 2014 (after adjustment for the 13-month surveillance period). Isolates were characterised by serotyping, multilocus sequence typing, and antimicrobial susceptibility testing. FINDINGS 856 cases of group B streptococcus were identified in 2014-15, an incidence of 0·94 per 1000 livebirths (95% CI 0·88-1·00). Incidence for early-onset disease (n=517) was 0·57 per 1000 livebirths (95% CI 0·52-0·62), and for late-onset disease (n=339) was 0·37 per 1000 livebirths (0·33-0·41). 53 infants died (case fatality rate 6·2%), of whom 27 had early-onset disease (case fatality rate 5·2%) and 26 had late-onset disease (case fatality rate 7·7%). The predominant serotypes were III (241 [60%] of 402 serotyped isolates) and Ia (69 [17%]); five serotypes (Ia, Ib, II, III, V) accounted for 377 (94%) of all serotyped isolates. INTERPRETATION The incidence of invasive infant group B streptococcal disease in the UK and Ireland has increased since a comparable study done in 2000-01. The burden of early-onset disease has not declined despite the introduction of national prevention guidelines. New strategies for prevention are required. FUNDING Meningitis Now.
Collapse
Affiliation(s)
- Catherine P O'Sullivan
- Paediatric Infectious Diseases Research Group & Vaccine Institute, St George's University of London and St George's University Hospitals NHS Trust, London, UK.
| | - Theresa Lamagni
- National Infection Service, Public Health England, London, UK
| | - Darshana Patel
- National Infection Service, Public Health England, London, UK
| | | | - Robert Cunney
- Health Service Executive Health Protection Surveillance Centre, Dublin, Ireland; Irish Meningitis and Sepsis Reference Laboratory, Temple Street Children's University Hospital, Dublin, Ireland
| | - Mary Meehan
- Irish Meningitis and Sepsis Reference Laboratory, Temple Street Children's University Hospital, Dublin, Ireland
| | - Shamez Ladhani
- Immunisation, Hepatitis, and Blood Safety Department, Public Health England, London, UK
| | | | | | | | | | - Georgia Kapatai
- Immunisation, Hepatitis, and Blood Safety Department, Public Health England, London, UK
| | - Victoria Chalker
- Immunisation, Hepatitis, and Blood Safety Department, Public Health England, London, UK
| | - Diane Lindsay
- Scottish Haemophilus, Legionella, Meningococcus, and Pneumococcus Reference Laboratory, Glasgow, UK
| | - Andrew Smith
- Scottish Haemophilus, Legionella, Meningococcus, and Pneumococcus Reference Laboratory, Glasgow, UK; College of Medical, Veterinary and Life Sciences, Glasgow Dental Hospital and School, University of Glasgow, Glasgow, UK; Scottish Microbiology Reference Laboratory, Glasgow Royal Infirmary, Glasgow, UK
| | | | - Christine E Jones
- Faculty of Medicine and Institute for Life Sciences, University of Southampton, Southampton, UK; University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Paul T Heath
- Paediatric Infectious Diseases Research Group & Vaccine Institute, St George's University of London and St George's University Hospitals NHS Trust, London, UK
| |
Collapse
|
20
|
Abstract
Group B streptococcus (GBS) is the most common cause of early-onset neonatal sepsis in many countries and responsible for significant perinatal morbidity and mortality worldwide. Intrapartum antibiotic prophylaxis has been the mainstay of efforts to prevent early-onset GBS disease in recent decades, however it is unclear if women should be targeted based on the presence of clinical risk factors or by screening for GBS colonisation during pregnancy. Universal bacteriological screening of women in late pregnancy has been widely adopted but questions remain regarding its benefits and potential harms. Newer approaches to screening based on rapid point-of-care testing require further evaluation in randomised controlled trials to inform evidence-based practice. Given current preventive strategies do not protect against late onset disease and other sequelae of infection, maternal vaccination against GBS may present the best opportunity to reduce the global burden of invasive GBS disease in the future.
Collapse
|
21
|
Feuerschuette OHM, Silveira SK, Cancelier ACL, da Silva RM, Trevisol DJ, Pereira JR. Diagnostic yield of real-time polymerase chain reaction in the diagnosis of intrapartum maternal rectovaginal colonization by group B Streptococcus: a systematic review with meta-analysis. Diagn Microbiol Infect Dis 2018; 91:99-104. [PMID: 29454653 DOI: 10.1016/j.diagmicrobio.2018.01.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 01/06/2018] [Accepted: 01/17/2018] [Indexed: 11/17/2022]
Abstract
Group B Streptococcus is the leading etiologic factor of neonatal sepsis. Intrapartum real-time polymerase chain reaction (RT-PCR) may allow faster and more accurate detection of maternal colonization. The aim of this study was to determine the sensitivity and specificity of RT-PCR when compared to the reference standard culture in selective broth media collected from rectovaginal tract from laboring women. We selected 15 studies that included 6368 women. Papers selection, data extraction, and quality assessment were carried out by two independent researchers. The prevalence of maternal colonization was 23.8% by RT-PCR and 22.1% by culture. The meta-analysis demonstrated an RT-PCR sensitivity of 93.7% (CI 92.1-95.3), and specificity of 97.6% (CI 97.0-98.1). This result is above the cutoff point defined by the Centers for Disease Control and Prevention for clinical usefulness. In conclusion, RT-PCR for GBS screening in labor ward is a promising tool; however, further well-designed studies to justify its use are needed.
Collapse
Affiliation(s)
- Otto Henrique May Feuerschuette
- Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina UNISUL, Av. José Acácio Moreira, 787 - Dehon, Tubarão, SC, Brazil, CEP-88704-900; Hospital Universitário Ernani Polydoro São Thiago HU-UFSC, Universidade Federal de Santa Catarina, R. Profa. Maria Flora Pausewang, s/n - Trindade, Florianópolis-SC, Brazil, CEP-88036-800.
| | - Sheila Koettker Silveira
- Hospital Universitário Ernani Polydoro São Thiago HU-UFSC, Universidade Federal de Santa Catarina, R. Profa. Maria Flora Pausewang, s/n - Trindade, Florianópolis-SC, Brazil, CEP-88036-800.
| | - Ana Carolina Labor Cancelier
- Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina UNISUL, Av. José Acácio Moreira, 787 - Dehon, Tubarão, SC, Brazil, CEP-88704-900.
| | - Rosemeri Maurici da Silva
- Programa de Pós-Graduação em Ciências Médicas, UFSC, Universidade Federal de Santa Catarina, R. Profa. Maria Flora Pausewang, s/n - Trindade, Florianópolis-, SC, Brazil, CEP- 88036-800.
| | - Daisson José Trevisol
- Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina UNISUL, Av. José Acácio Moreira, 787 - Dehon, Tubarão, SC, Brazil, CEP-88704-900.
| | - Jefferson Ricardo Pereira
- Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina UNISUL, Av. José Acácio Moreira, 787 - Dehon, Tubarão, SC, Brazil, CEP-88704-900.
| |
Collapse
|
22
|
Rabaan AA, Saunar JV, Bazzi AM, Soriano JL. Modified use of real-time PCR detection of group B Streptococcus in pregnancy. J Med Microbiol 2017; 66:1516-1520. [PMID: 28920845 DOI: 10.1099/jmm.0.000604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The CDC recommends antenatal screening of vaginal/rectal samples for Streptococcus agalactiae at 35-37 weeks' gestation, with intra-partum antibiotic prophylaxis for positive cases. We tested a modified use of the Cepheid Xpert GBS real-time PCR kit on enrichment cultures from 554 vaginal/rectal swabs compared to the current subculturing gold standard method. Swabs were inoculated on polymyxin nalidixic acid agar plates, and Todd-Hewitt enrichment broth cultures were examined daily for growth. Todd-Hewitt broth culture was also used for Xpert GBS. There was 92.06 % agreement between the subculture and PCR methods. Sensitivity of Xpert GBS was 100 %, specificity was 89.40 %, positive predictive value was 75.96 % and negative predictive value was 100 %. Colonization incidence was higher with younger (≤24 years) or older (≥35 years) maternal age. Modified use of the Cepheid Xpert GBS would assist rapid diagnosis of S. agalactiae colonization and facilitate timely and appropriate assignment to intra-partum antibiotic prophylaxis.
Collapse
Affiliation(s)
- Ali A Rabaan
- Molecular Diagnostic Laboratory, Johns Hopkins Aramco Healthcare, Dhahran 31311, Saudi Arabia
| | - Justin V Saunar
- Microbiology Laboratory, Johns Hopkins Aramco Healthcare, Dhahran 31311, Saudi Arabia
| | - Ali M Bazzi
- Microbiology Laboratory, Johns Hopkins Aramco Healthcare, Dhahran 31311, Saudi Arabia
| | - Joan L Soriano
- Microbiology Laboratory, Johns Hopkins Aramco Healthcare, Dhahran 31311, Saudi Arabia
| |
Collapse
|
23
|
Prevention of Early-onset Neonatal Group B Streptococcal Disease: Green-top Guideline No. 36. BJOG 2017; 124:e280-e305. [PMID: 28901693 DOI: 10.1111/1471-0528.14821] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
24
|
Khalil MR, Uldbjerg N, Thorsen PB, Henriksen B, Møller JK. Risk-based screening combined with a PCR-based test for group B streptococci diminishes the use of antibiotics in laboring women. Eur J Obstet Gynecol Reprod Biol 2017. [DOI: 10.1016/j.ejogrb.2017.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
25
|
Ramesh Babu S, McDermott R, Farooq I, Le Blanc D, Ferguson W, McCallion N, Drew R, Eogan M. Screening for group B Streptococcus (GBS) at labour onset using PCR: accuracy and potential impact - a pilot study. J OBSTET GYNAECOL 2017; 38:49-54. [PMID: 28764569 DOI: 10.1080/01443615.2017.1328490] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
This pilot study assessed the diagnostic accuracy and potential impact of a rapid PCR-based screening test for the detection of group B Streptococcus (GBS) at the onset of labour for the purpose of optimising intrapartum antibiotic prophylaxis (IAP). Vaginal and rectal swabs from a convenience sample of 158 women were analysed by conventional broth-enriched culture and a rapid PCR test. Overall, GBS carriage was 18.98% by culture and 19.62% by PCR. PCR for the detection of GBS had a sensitivity of 93.1%, specificity of 96.67% and area under the curve (AUC) of 0.95. Only 19.3% GBS-positive women received IAP. Three-fourths of babies born to GBS-positive mothers did not receive surveillance for early-onset GBS disease. Of the women who received IAP, only 32.5% were GBS carriers. Seventy-four percent of the GBS-positive mothers delivered more than 5 h after recruitment, which gives adequate swab to delivery interval for appropriate antibiotic prophylaxis in labour. Impact statement What is already known about this subject: Appropriate intra-partum treatment of colonized mothers reduces the risk of GBS transmission to neonates. Universal ante partum screening of pregnant women or IAP based on risk factors in labour for GBS prevention fail to accurately identify and treat the woman who actually harbors GBS in the birth canal in labour. A PCR based rapid test, allows for real-time assessment of GBS carriage in labour. WHAT THIS STUDY ADDS This study highlights the fact that a large number of GBS carriers in labour, who could potentially infect their babies, do not receive IAP, and most of their babies do not receive added surveillance in the neonatal period for EOGBS disease. It also confirms that PCR testing at onset of labour is a highly sensitive and reliable test that identifies the women who are GBS carriers in labour and hence need IAP. What the implications are of these findings for clinical practice and/or further research: Timely provision of IAP for the appropriate woman is possible by adopting universal GBS screening at the onset of labor using GBS-PCR. This would involve additional costs to health care facilities and added work to laboratory personnel.
Collapse
Affiliation(s)
- Sandhya Ramesh Babu
- a Department of Obstetrics and Gynaecology , Rotunda Hospital , Dublin , Ireland
| | - Rachel McDermott
- a Department of Obstetrics and Gynaecology , Rotunda Hospital , Dublin , Ireland
| | - Irum Farooq
- a Department of Obstetrics and Gynaecology , Rotunda Hospital , Dublin , Ireland
| | - David Le Blanc
- b Department of Laboratory Medicine , Rotunda Hospital , Dublin , Ireland
| | - Wendy Ferguson
- c Department of Neonatology , Rotunda Hospital , Dublin , Ireland
| | - Naomi McCallion
- c Department of Neonatology , Rotunda Hospital , Dublin , Ireland
| | - Richard Drew
- d Department of Microbiology , Rotunda Hospital , Dublin , Ireland.,e Irish Meningitis and Sepsis Reference Laboratory , Temple Street Children's University Hospital , Dublin , Ireland.,f Royal College of Surgeons in Ireland , Dublin , Ireland
| | - Maeve Eogan
- a Department of Obstetrics and Gynaecology , Rotunda Hospital , Dublin , Ireland
| |
Collapse
|
26
|
Seedat F, Stinton C, Patterson J, Geppert J, Tan B, Robinson ER, McCarthy ND, Uthman OA, Freeman K, Johnson SA, Fraser H, Brown CS, Clarke A, Taylor-Phillips S. Adverse events in women and children who have received intrapartum antibiotic prophylaxis treatment: a systematic review. BMC Pregnancy Childbirth 2017; 17:247. [PMID: 28747160 PMCID: PMC5530570 DOI: 10.1186/s12884-017-1432-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 07/18/2017] [Indexed: 12/31/2022] Open
Abstract
Background Adverse events from intrapartum antibiotic prophylaxis (IAP) are poorly documented yet essential to inform clinical practice for neonatal group B Streptococcus (GBS) disease prevention. In this systematic review, we appraised and synthesised the evidence on the adverse events of IAP in the mother and/or her child. Methods We searched MEDLINE, MEDLINE In-Process & Other Non-Indexed Citations, EMBASE, Cochrane, and Science Citation Index from date of inception until October 16th 2016. Reference lists of included studies and relevant systematic reviews were hand-searched. We included primary studies in English that reported any adverse events from intrapartum antibiotics for any prophylactic purpose compared to controls. The search was not restricted to prophylaxis for GBS but excluded women with symptoms of infection or undergoing caesarean section. Two reviewers assessed the methodological quality of studies, using the Cochrane Risk of Bias tool, and the Risk of Bias Assessment Tool for Nonrandomised Studies. Results were synthesised narratively and displayed in text and tables. Results From 2364 unique records, 30 studies were included. Despite a wide range of adverse events reported in 17 observational studies and 13 randomised controlled trials (RCTs), the evidence was inconsistent and at high risk of bias. Only one RCT investigated the long-term effects of IAP reporting potentially serious outcomes such as cerebral palsy; however, it had limited applicability and unclear biological plausibility. Seven observational studies showed that IAP for maternal GBS colonisation alters the infant microbiome. However, study populations were not followed through to clinical outcomes, therefore clinical significance is unknown. There was also observational evidence for increased antimicrobial resistance, however studies were at high or unclear risk of bias. Conclusions The evidence base to determine the frequency of adverse events from intrapartum antibiotic prophylaxis for neonatal GBS disease prevention is limited. As RCTs may not be possible, large, better quality, and longitudinal observational studies across countries with widespread IAP could fill this gap. Trial registration CRD42016037195. Electronic supplementary material The online version of this article (doi:10.1186/s12884-017-1432-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Farah Seedat
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Chris Stinton
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Jacoby Patterson
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Julia Geppert
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Bee Tan
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK.,Department of Obstetrics and Gynaecology, Birmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, B9 5SS, UK
| | - Esther R Robinson
- Birmingham Public Health Laboratory (PHE), Heartlands Hospital, Birmingham, B9 5SS, UK
| | - Noel Denis McCarthy
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Olalekan A Uthman
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Karoline Freeman
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Samantha Ann Johnson
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Hannah Fraser
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Colin Stewart Brown
- Bacteria Reference Department, National Infection Service, Public Health England, 61 Colindale Ave, London, NW95EQ, UK
| | - Aileen Clarke
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK
| | - Sian Taylor-Phillips
- Division of Health Sciences, University of Warwick Medical School, Gibbet Hill Campus, Coventry, CV4 7AL, UK.
| |
Collapse
|
27
|
Delabaere A, Curinier S, Ughetto S, Gibold L, Bonnet R, Rossi A, Gallot D. Accuracy of a rapid intrapartum group B Streptococcus test: A new immunochromatographic assay. J Gynecol Obstet Hum Reprod 2017; 46:449-453. [PMID: 28934088 DOI: 10.1016/j.jogoh.2017.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/21/2017] [Accepted: 03/29/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVES To decrease the incidence of early-onset group B streptococcal (GBS) disease, a culture-based screening of all pregnant women at 35-37 weeks is recommended. This gold standard test requires 24-72hours culture. This delay precludes its use for intrapartum screening. This study assesses a new immunoassay, the DIMA test, for identifying GBS-positive patients in the labor ward. MATERIALS AND METHODS This was a prospective observational study of 195 pregnant women presenting with full-term labor at a single site in France between June and August 2012. We assessed the diagnostic accuracy of intrapartum DIMA testing as compared to intrapartum GBS culture and prenatal screening at 35-38 weeks. RESULTS The DIMA test sensitivity and specificity were 57.1% and 83.2%, respectively, as compared to 42.9% and 97% for prenatal culture screening. CONCLUSION The DIMA test assay is a rapid and inexpensive test for the detection of maternal GBS colonization in the labor ward. Its sensitivity is higher than antepartum culture but its specificity is lower. Its performance was inferior to that reported for rapid polymerase chain reaction assays.
Collapse
Affiliation(s)
- A Delabaere
- Retinoids, development and developmental diseases, EA 7281, medicine school, Auvergne university, 28, place Henri-Dunant, BP 38, 63001 Clermont-Ferrand cedex 1, France; Department of obstetrics and gynecology, university hospital, 1, place Lucie-et-Raymond-Aubrac, 63000 Clermont-Ferrand, France.
| | - S Curinier
- Department of obstetrics and gynecology, university hospital, 1, place Lucie-et-Raymond-Aubrac, 63000 Clermont-Ferrand, France
| | - S Ughetto
- Department of medical informatics, university hospital, 58, rue Montalemebert, 63000 Clermont-Ferrand, France
| | - L Gibold
- Bacteriology laboratory, university hospital, 58, rue Montalemebert, 63000 Clermont-Ferrand, France
| | - R Bonnet
- Bacteriology laboratory, university hospital, 58, rue Montalemebert, 63000 Clermont-Ferrand, France
| | - A Rossi
- Department of obstetrics and gynecology, university hospital, 1, place Lucie-et-Raymond-Aubrac, 63000 Clermont-Ferrand, France
| | - D Gallot
- Retinoids, development and developmental diseases, EA 7281, medicine school, Auvergne university, 28, place Henri-Dunant, BP 38, 63001 Clermont-Ferrand cedex 1, France; Department of obstetrics and gynecology, university hospital, 1, place Lucie-et-Raymond-Aubrac, 63000 Clermont-Ferrand, France
| |
Collapse
|
28
|
Ma TWL, Chan V, So CH, Hui ASY, Lee CN, Hui APW, So PL, Kong CW, Fung B, Leung KY. Prevention of early onset group B streptococcal disease by universal antenatal culture-based screening in all public hospitals in Hong Kong. J Matern Fetal Neonatal Med 2017; 31:881-887. [PMID: 28320236 DOI: 10.1080/14767058.2017.1300649] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Teresa W. L. Ma
- Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong SAR, China
| | - Viola Chan
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Hong Kong SAR, China
| | - C. H. So
- Department of Obstetrics and Gynaecology, Princess Margaret Hospital, Kowloon, Hong Kong SAR, China
| | - Annie S. Y. Hui
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - C. N. Lee
- Department of Obstetrics and Gynaecology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong SAR, China
| | - Amelia P. W. Hui
- Department of Obstetrics and Gynaecology, Queen Mary Hospital, Hong Kong SAR, China
| | - P. L. So
- Department of Obstetrics and Gynaecology, Tuen Mun Hospital, Hong Kong SAR, China
| | - C. W. Kong
- Department of Obstetrics and Gynaecology, United Christian Hospital, Hong Kong SAR, China
| | - Barbara Fung
- Family Health Service, Department of Health, Hong Kong SAR, China
| | - K. Y. Leung
- Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong SAR, China
| |
Collapse
|
29
|
Nielsen M, Sheikh N, Fitzgerald E, Meehan M, LeBlanc D, Eogan M, El-Khuffash A, Drew RJ. Screening for early-onset invasive group B Streptococcal disease in neonates in an Irish hospital (2001-2014): a retrospective audit. Infect Dis (Lond) 2017; 49:466-470. [PMID: 28276804 DOI: 10.1080/23744235.2017.1285045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Group B Streptococcus (GBS) is the most common cause of early-onset neonatal sepsis and meningitis. In babies with no clinical suspicion of infection, who are at risk of early-onset invasive disease based on maternal risk factors, blood cultures are taken to detect bacteraemia. In our institution, lumbar punctures are performed in infants with clinical signs of sepsis but not in infants who are well at the time of screening. Between 2001 and 2014, there were 112,361 live births weighing >500 g, of whom 13,959 (12.4%) infants had a blood culture taken on the first or second day of life, and 1971 (14.1%) of these infants had lumbar punctures on these first two days of life. Fifty-three cases of early-onset GBS disease were identified. Only three patients with invasive GBS disease had no clinical suspicion for sepsis at the time of testing. Thus, the number of blood cultures taken to detect one case of GBS bacteraemia in an infant who is well at the time of testing was 3996.
Collapse
Affiliation(s)
- Maryke Nielsen
- a Department of Microbiology , Rotunda Hospital , Dublin 1 , Ireland
| | - Naveed Sheikh
- b Department of Neonatology , Rotunda Hospital , Dublin 1 , Ireland
| | - Eoin Fitzgerald
- b Department of Neonatology , Rotunda Hospital , Dublin 1 , Ireland
| | - Mary Meehan
- c Irish Meningitis and Sepsis Reference Laboratory , Temple Street Children's University Hospital , Dublin 7 , Ireland
| | - David LeBlanc
- a Department of Microbiology , Rotunda Hospital , Dublin 1 , Ireland
| | - Maeve Eogan
- d Department of Obstetrics , Rotunda Hospital , Dublin 1 , Ireland
| | - Afif El-Khuffash
- b Department of Neonatology , Rotunda Hospital , Dublin 1 , Ireland
| | - Richard J Drew
- a Department of Microbiology , Rotunda Hospital , Dublin 1 , Ireland.,c Irish Meningitis and Sepsis Reference Laboratory , Temple Street Children's University Hospital , Dublin 7 , Ireland.,e Department of Microbiology , Royal College of Surgeons in Ireland , Dublin 2 , Ireland
| |
Collapse
|
30
|
Efstratiou A, Lamagni T, Turner CE. Streptococci and Enterococci. Infect Dis (Lond) 2017. [DOI: 10.1016/b978-0-7020-6285-8.00177-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
31
|
Elikwu CJ, Oduyebo O, Ogunsola FT, Anorlu RI, Okoromah CN, König B. High group B streptococcus carriage rates in pregnant women in a tertiary institution in Nigeria. Pan Afr Med J 2016; 25:249. [PMID: 28293365 PMCID: PMC5337299 DOI: 10.11604/pamj.2016.25.249.9433] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 10/31/2016] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION In contrast to industrialized countries, until recently Group B Streptococcus (GBS) was infrequently reported in the developing world. This study was aimed at investigating the prevalence of GBS maternal colonization and to analyze the serotype distribution among the isolates. METHODS Vagino-rectal swabs collected from pregnant women were cultured for GBS using conventional media. Swabs were also taken from the mouths, ears and umbilical stumps of the neonates born to colonized mothers. Multiplex PCR and a conventional PCR to discern the gbs2018-ST-17 gene (specific for sequence type(ST)-17 clone) was performed to characterize the Group B streptococcus isolates. RESULTS A total of 300 pregnant women and 53 neonates were studied by culture but only 175 mothers by PCR. GBS was identified in four (6.8%) of 59 (19.7%) neonates of colonized mothers. Out of 175 mothers investigated by PCR, 112 (64%) were colonized. Serotype Ia (23.9%) was the most common among vagino-rectal isolates. Serotype II (71.4%) predominates among colonizing strain in newborns. A significant association between frequency of intercourse of > 2 per week and GBS carriage was found (t-test= 2.2; P value < 0.05). CONCLUSION GBS carriage is high with low transmission. Strains that have been associated with GBS neonatal disease were reported, though in very low rates. Though none of the babies studied had invasive GBS disease, a more expansive study in the future will be required to establish if invasive GBS neonatal disease is uncommon in Nigeria.
Collapse
MESH Headings
- Adolescent
- Adult
- Carrier State/epidemiology
- Female
- Humans
- Infant, Newborn
- Infant, Newborn, Diseases/diagnosis
- Infant, Newborn, Diseases/epidemiology
- Infant, Newborn, Diseases/microbiology
- Infectious Disease Transmission, Vertical
- Middle Aged
- Multiplex Polymerase Chain Reaction
- Nigeria/epidemiology
- Polymerase Chain Reaction
- Pregnancy
- Pregnancy Complications, Infectious/diagnosis
- Pregnancy Complications, Infectious/epidemiology
- Pregnancy Complications, Infectious/microbiology
- Prevalence
- Serotyping
- Streptococcal Infections/diagnosis
- Streptococcal Infections/epidemiology
- Streptococcal Infections/microbiology
- Streptococcus agalactiae/isolation & purification
- Young Adult
Collapse
Affiliation(s)
- Charles John Elikwu
- Department of Medical Microbiology & Parasitology, Ben Carson School of Medicine, Babcock University/Babcock University Teaching Hospitals, Ilisan-Remo, Ogun State, Nigeria; Department of Medical Microbiology & Parasitology, Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Oyinlola Oduyebo
- Department of Medical Microbiology & Parasitology, College of Medicine, University of Lagos, Idi-Araba, Lagos, Nigeria
| | - Folasade Tolulope Ogunsola
- Department of Medical Microbiology & Parasitology, College of Medicine, University of Lagos, Idi-Araba, Lagos, Nigeria
| | - Rose Ihuoma Anorlu
- Department of Obstetrics & Gynaecology, College of Medicine, University of Lagos, Idi-Araba, Lagos, Nigeria
| | - Christy Nene Okoromah
- Department of Paediatrics and Child Health, College of Medicine, University of Lagos, Idi-Araba, Lagos, Nigeria
| | - Brigitte König
- Institut für Medizinische Mikrobiologie und Infektionsepidemiologie, Universitätsklinikum Leipzig, Germany
| |
Collapse
|
32
|
McQuaid F, Pask S, Locock L, Davis E, Stevens Z, Plumb J, Snape MD. Attitudes towards antenatal vaccination, Group B streptococcus and participation in clinical trials: Insights from focus groups and interviews of parents and healthcare professionals. Vaccine 2016; 34:4056-61. [PMID: 27318418 DOI: 10.1016/j.vaccine.2016.06.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/24/2016] [Accepted: 06/03/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Antenatal vaccination has become a part of routine care during pregnancy in the UK and worldwide, leading to improvements in health for both pregnant women and their infants. However, uptake remains sub-optimal. Other antenatal vaccines targeting major neonatal pathogens, such as Group B streptococcus (GBS), the commonest cause of sepsis and meningitis in the neonatal period, are undergoing clinical trials but more information is needed on how to improve acceptance of such vaccines. METHODS Qualitative study using focus groups and interviews; involving 14 pregnant women, 8 mothers with experience of GBS, and 28 maternity healthcare professionals. Questions were asked regarding antenatal vaccines, knowledge of GBS, attitudes to a potential future GBS vaccine and participation in antenatal vaccine trials. RESULTS All participants were very cautious about vaccination during pregnancy, with harm to the baby being a major concern. Despite this, the pregnant women and parents with experience of GBS were open to the idea of an antenatal GBS vaccine and participating in research, while the maternity professionals were less positive. Major barriers identified included lack of knowledge about GBS and the reluctance of maternity professionals to be involved. INTERPRETATION In order for a future GBS vaccine to be acceptable to both pregnant women and the healthcare professionals advising them, a major awareness campaign would be required with significant focus on convincing and training maternity professionals.
Collapse
Affiliation(s)
- Fiona McQuaid
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom.
| | - Sophie Pask
- Health Experiences Research Group, Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Louise Locock
- Health Experiences Research Group, Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom
| | - Elizabeth Davis
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom
| | - Zoe Stevens
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom
| | - Jane Plumb
- Group B Strep Support, Haywards Heath, West Sussex, United Kingdom
| | - Matthew D Snape
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom
| |
Collapse
|
33
|
Abstract
INTRODUCTION Streptococci are a genus of Gram-positive bacteria which cause diverse human diseases. Many of these species have the potential to cause invasive infection resulting from the presence of bacteria in a normally sterile site. SOURCES OF DATA Original articles, reviews and guidelines. AREAS OF AGREEMENT Invasive infection by a streptococcus species usually causes life-threatening illness. When measured in terms of deaths, disability and cost, these infections remain an important threat to health in the UK. Overall they are becoming more frequent among the elderly and those with underlying chronic illness. New observational evidence has become available to support the use of clindamycin and intravenous immunoglobulin in invasive Group A streptococcal disease. AREAS OF CONTROVERSY Few interventions for the treatment and prevention of these infections have undergone rigorous evaluation in clinical trials. For example, the role of preventative strategies such as screening of pregnant women to prevent neonatal invasive Group B streptococcal disease needs to be clarified. FUTURE PROSPECTS Studies of invasive streptococcal disease are challenging to undertake, not least because individual hospitals treat relatively few confirmed cases. Instead clinicians and scientists must work together to build national and international networks with the aim of developing a more complete evidence base for the treatment and prevention of these devastating infections.
Collapse
Affiliation(s)
- Tom Parks
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Lucinda Barrett
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Trust, Oxford, UK
| | - Nicola Jones
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Trust, Oxford, UK
| |
Collapse
|
34
|
Di Renzo GC, Melin P, Berardi A, Blennow M, Carbonell-Estrany X, Donzelli GP, Hakansson S, Hod M, Hughes R, Kurtzer M, Poyart C, Shinwell E, Stray-Pedersen B, Wielgos M, El Helali N. Intrapartum GBS screening and antibiotic prophylaxis: a European consensus conference. J Matern Fetal Neonatal Med 2014; 28:766-82. [PMID: 25162923 DOI: 10.3109/14767058.2014.934804] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Group B streptococcus (GBS) remains worldwide a leading cause of severe neonatal disease. Since the end of the 1990s, various strategies for prevention of the early onset neonatal disease have been implemented and have evolved. When a universal antenatal GBS screening-based strategy is used to identify women who are given an intrapartum antimicrobial prophylaxis, a substantial reduction of incidence up to 80% has been reported in the USA as in other countries including European countries. However recommendations are still a matter of debate due to challenges and controversies on how best to identify candidates for prophylaxis and to drawbacks of intrapartum administration of antibiotics. In Europe, some countries recommend either antenatal GBS screening or risk-based strategies, or any combination, and others do not have national or any other kind of guidelines for prevention of GBS perinatal disease. Furthermore, accurate population-based data of incidence of GBS neonatal disease are not available in some countries and hamper good effectiveness evaluation of prevention strategies. To facilitate a consensus towards European guidelines for the management of pregnant women in labor and during pregnancy for the prevention of GBS perinatal disease, a conference was organized in 2013 with a group of experts in neonatology, gynecology-obstetrics and clinical microbiology coming from European representative countries. The group reviewed available data, identified areas where results were suboptimal, where revised procedures and new technologies could improve current practices for prevention of perinatal GBS disease. The key decision issued after the conference is to recommend intrapartum antimicrobial prophylaxis based on a universal intrapartum GBS screening strategy using a rapid real time testing.
Collapse
Affiliation(s)
- G C Di Renzo
- Department of Ob/Gyn and Centre for Perinatal and Reproductive Medicine, Santa Maria della Misericordia University Hospital , Perugia , Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Martinez de Tejada B. Antibiotic use and misuse during pregnancy and delivery: benefits and risks. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:7993-8009. [PMID: 25105549 PMCID: PMC4143845 DOI: 10.3390/ijerph110807993] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 07/25/2014] [Accepted: 07/28/2014] [Indexed: 11/17/2022]
Abstract
Although pregnancy is considered as a physiological state, most pregnant women in developed countries receive multiple medications to prevent maternal or neonatal complications, with antibiotics among the most frequently prescribed. During pregnancy, antibiotics are often prescribed in the context of preterm labor, intrapartum fever, prevention of neonatal Group B Streptococcus fever, and cesarean section. Outside this period, they are commonly prescribed in the community setting for respiratory, urinary, and ear, nose and throat infection symptoms. Whereas some of the current indications have insightful reasons to justify their use, potential risks related to overuse and misuse may surpass the benefits. Of note, the recent 2014 World Health Assembly expressed serious concern regarding antibiotic resistance due to antibiotic overuse and misuse and urged immediate action to combat antibiotic resistance on a global scale. Most studies in the obstetrics field have focused on the benefits of antibiotics for short-term maternal and neonatal complications, but with very little (if any) interest in long-term consequences.
Collapse
|
36
|
Emonet S, Schrenzel J, Martinez de Tejada B. Molecular-based screening for perinatal group B streptococcal infection: implications for prevention and therapy. Mol Diagn Ther 2014; 17:355-61. [PMID: 23832874 DOI: 10.1007/s40291-013-0047-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Group B streptococci (GBS) are a leading cause of infectious neonatal morbidity and mortality. Timely and accurate identification of colonized pregnant women is imperative to implement intrapartum antibioprophylaxis (IAP) to reduce the risk of early neonatal sepsis. Current guidelines recommend screening for GBS carriage with vaginal-rectal cultures. However, cultures require 24-72 h, thus precluding their use for intrapartum screening and these are only performed at 35-37 weeks gestation. New rapid molecular-based tests can detect GBS within hours. They have the potential to be used intrapartum and to allow for selective IAP in women carrying GBS. An advantage is that they can sometimes be performed by non-laboratory staff in the labor suite, thus avoiding delays in sample transfers to the microbiology laboratory. Another possible use of molecular-based assays is for the diagnosis of neonatal sepsis, where tests with a short turnaround time and high sensitivity and specificity are crucial. In this situation, the detection of microorganisms once antibiotic therapy has already been started is important, as treatment is started immediately once sepsis is suspected without waiting for microbiological confirmation. In this article, we discuss the state-of-the-art molecular-based tests available for GBS screening during pregnancy, as well as their implications for IAP for the diagnosis and prevention of neonatal sepsis.
Collapse
Affiliation(s)
- Stéphane Emonet
- Department of Genetics and Laboratory Medicine, University Hospitals of Geneva and Faculty of Medicine, Geneva, Switzerland
| | | | | |
Collapse
|
37
|
Early-onset group B streptococcal disease in the United States: potential for further reduction. Obstet Gynecol 2014; 123:828-37. [PMID: 24785612 DOI: 10.1097/aog.0000000000000163] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To describe lapses in adherence to group B streptococcus (GBS) prevention guidelines among cases of early-onset GBS disease in term and preterm neonates and to estimate the potential for further reduction in disease burden under current prevention strategies. METHODS We reviewed labor and delivery and prenatal records of mothers of neonates with early-onset GBS disease (aged younger than 7 days with GBS isolated from a normally sterile site) identified at population-based surveillance sites in 2008-2009. We interviewed prenatal care providers about GBS screening practices and obtained relevant laboratory records. We evaluated the data for errors in prenatal screening, laboratory methods, communication of results, and intrapartum antibiotic prophylaxis. Using published data on screening sensitivity and intrapartum prophylaxis effectiveness, we estimated the potential reduction in cases under optimal prevention implementation. RESULTS Among 309 cases, 179 (57.9%) had one or more implementation errors. The most common error type in term and preterm case-patients was prenatal screening (80 of 222 [36.0%]) and intrapartum prophylaxis (46 of 85 [54.1%]), respectively. We estimated that under optimal implementation, cases of early-onset GBS disease could be reduced by 26-59% with the largest benefit from a single intervention coming from improved use of intrapartum prophylaxis (16% decrease). CONCLUSION Further reduction of early-onset GBS disease burden is possible under current prevention strategies, particularly with improved implementation of antibiotic prophylaxis. However, even with perfect adherence to recommended practices, the decline in cases may be modest. Therefore, novel prevention approaches such as improved intrapartum assays and vaccines are also needed.
Collapse
|
38
|
Intrapartum detection of Group B streptococci colonization by rapid PCR-test on labor ward. Eur J Obstet Gynecol Reprod Biol 2014; 176:137-41. [DOI: 10.1016/j.ejogrb.2014.02.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 06/25/2013] [Accepted: 02/24/2014] [Indexed: 11/18/2022]
|
39
|
Melin P, Efstratiou A. Group B streptococcal epidemiology and vaccine needs in developed countries. Vaccine 2014; 31 Suppl 4:D31-42. [PMID: 23973345 DOI: 10.1016/j.vaccine.2013.05.012] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 05/03/2013] [Indexed: 10/26/2022]
Abstract
Development of a group B streptococcal vaccine (GBS) vaccine is the most promising approach for the prevention of GBS infections in babies, given the potential adverse effects of intrapartum antibiotic prophylaxis as well as the need for effective prevention of both adult and late perinatal disease. There are numerous prevention strategies at this time but none are 100% effective in the eradication of neonatal early onset GBS disease and there are no preventative strategies for late onset disease. The need for a GBS vaccine is therefore, of utmost importance. Efforts applying genomics to GBS vaccine development have led to the identification of novel vaccine candidates. The publication of GBS whole genomes coupled with new technologies including multigenome screening and bioinformatics has also allowed researchers to overcome the serotype limitation of earlier vaccine preparations in the search of a universal effective vaccine against GBS. This review brings together the key arguments concerning the potential need of a GBS vaccine in developed countries and describes the current status with GBS epidemiology and microbiology in these countries.
Collapse
Affiliation(s)
- Pierrette Melin
- National Reference Centre for Group B Streptococci, Medical Microbiology Department, University Hospital of Liege, Sart Tilman B-23, 4000 Liege, Belgium.
| | | |
Collapse
|
40
|
GBS public awareness, advocacy, and prevention—What's working, what's not and why we need a maternal GBS vaccine. Vaccine 2013; 31 Suppl 4:D58-65. [DOI: 10.1016/j.vaccine.2013.02.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 02/19/2013] [Accepted: 02/24/2013] [Indexed: 11/21/2022]
|
41
|
Poncelet-Jasserand E, Forges F, Varlet MN, Chauleur C, Seffert P, Siani C, Pozzetto B, Ros A. Reduction of the use of antimicrobial drugs following the rapid detection ofStreptococcus agalactiaein the vagina at delivery by real-time PCR assay. BJOG 2013; 120:1098-108. [DOI: 10.1111/1471-0528.12138] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2012] [Indexed: 11/29/2022]
Affiliation(s)
- E Poncelet-Jasserand
- Department of Obstetrics; Gynaecology and Reproductive Medicine; University-Hospital of Saint-Etienne; France
| | - F Forges
- Unit of Clinical Research, Innovation and Pharmacology; INSERM CIE3; University-Hospital of Saint-Etienne; France
| | - M-N Varlet
- Department of Obstetrics; Gynaecology and Reproductive Medicine; University-Hospital of Saint-Etienne; France
| | - C Chauleur
- Department of Obstetrics; Gynaecology and Reproductive Medicine; University-Hospital of Saint-Etienne; France
| | - P Seffert
- Department of Obstetrics; Gynaecology and Reproductive Medicine; University-Hospital of Saint-Etienne; France
| | - C Siani
- Research Laboratory in Knowledge Engineering (ERIC); University of Lyon; Institute of Pharmaceutical and Biological Sciences (ISPB) of Lyon; France
| | | | - A Ros
- Department of Microbiology; Hôpital Nord; University-Hospital of Saint-Etienne; France
| |
Collapse
|
42
|
Horváth B, Grasselly M, Bödecs T, Boncz I, Bódis J. Screening pregnant women for group B streptococcus infection between 30 and 32 weeks of pregnancy in a population at high risk for premature birth. Int J Gynaecol Obstet 2013; 122:9-12. [PMID: 23579102 DOI: 10.1016/j.ijgo.2013.01.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 01/09/2013] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To assess the benefits of a chemoprophylaxis program based on screening women for group B streptococcus (GBS) infection between 30 and 32 weeks of pregnancy in a population with a high rate of premature births. METHODS From 1995 to 2011, 24 950 women were screened for GBS infection between 30 and 32 weeks of pregnancy at Markusovszky Teaching Hospital, Szombathely, Hungary. Those who tested positive, and those who tested negative but were at risk of infecting their newborns, underwent intrapartum prophylaxis. Neonatal outcomes were compared with those of a historical cohort that underwent no screening or treatment, and with those published in CDC/ACOG guidelines recommending screening closer to term. RESULTS There were 63 infected newborns (0.2%) in the study cohort, and 1 of 8 with sepsis died. There were 149 infected newborns (0.7%) in the historical cohort, and 29 of 31 with sepsis died. CONCLUSION Screening women early in a population with a high rate of premature births may simplify preterm labor management. It results, however, in a higher incidence of early onset neonatal GBS disease than when screening is done closer to term.
Collapse
Affiliation(s)
- Boldizsar Horváth
- Faculty of Health Sciences, University of Pécs, Szombathely, Hungary; Markusovszky Teaching Hospital, Szombathely, Hungary.
| | | | | | | | | |
Collapse
|
43
|
Abstract
Neonatal sepsis remains a feared cause of morbidity and mortality in the neonatal period. Maternal, neonatal, and environmental factors are associated with risk of infection, and a combination of prevention strategies, judicious neonatal evaluation, and early initiation of therapy are required to prevent adverse outcomes. This article reviews recent trends in epidemiology and provides an update on risk factors, diagnostic methods, and management of neonatal sepsis.
Collapse
Affiliation(s)
- Andres Camacho-Gonzalez
- Division of Pediatric Infectious Diseases, Emory Department of Pediatrics, Children's Healthcare of Atlanta, Emory University, Atlanta, GA 30322, USA.
| | - Paul W. Spearman
- Nahmias-Schinazi Professor and Chief, Pediatric Infectious Diseases, Vice Chair for Research, Emory Department of Pediatrics, Emory University, Chief Research Officer, Children’s Healthcare of Atlanta, Georgia, 2015 Uppergate Drive, Suite 500, Atlanta, GA 30322, P:404-727-5642, F:404-727-9223
| | - Barbara J. Stoll
- George W. Brumley, Jr. Professor and Chair of the Department of Pediatrics, Medical Director of Children’s Healthcare of Atlanta at Egleston, President of the Emory-Children’s Center, 2015 Uppergate Drive, Suite 200, Atlanta, GA 30322
| |
Collapse
|
44
|
Alós Cortés JI, Andreu Domingo A, Arribas Mir L, Cabero Roura L, de Cueto López M, López Sastre J, Melchor Marcos JC, Puertas Prieto A, de la Rosa Fraile M, Salcedo Abizanda S, Sánchez Luna M, Sanchez Pérez MJ, Torrejon Cardoso R. [Prevention of Neonatal Group B Sreptococcal Infection. Spanish Recommendations. Update 2012. SEIMC/SEGO/SEN/SEQ/SEMFYC Consensus Document]. Enferm Infecc Microbiol Clin 2012; 31:159-72. [PMID: 22658283 DOI: 10.1016/j.eimc.2012.03.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Accepted: 03/23/2012] [Indexed: 12/18/2022]
Abstract
Group B streptococci (GBS) remain the most common cause of early onset neonatal sepsis. In 2003 the Spanish Societies of Obstetrics and Gynaecology, Neonatology, Infectious Diseases and Clinical Microbiology, Chemotherapy, and Family and Community Medicine published updated recommendations for the prevention of early onset neonatal GBS infection. It was recommended to study all pregnant women at 35-37 weeks gestation to determine whether they were colonised by GBS, and to administer intrapartum antibiotic prophylaxis (IAP) to all colonised women. There has been a significant reduction in neonatal GBS infection in Spain following the widespread application of IAP. Today most cases of early onset GBS neonatal infection are due to false negative results in detecting GBS, to the lack of communication between laboratories and obstetric units, and to failures in implementing the prevention protocol. In 2010, new recommendations were published by the CDC, and this fact, together with the new knowledge and experience available, has led to the publishing of these new recommendations. The main changes in these revised recommendations include: microbiological methods to identify pregnant GBS carriers and for testing GBS antibiotic sensitivity, and the antibiotics used for IAP are updated; The significance of the presence of GBS in urine, including criteria for the diagnosis of UTI and asymptomatic bacteriuria in pregnancy are clarified; IAP in preterm labour and premature rupture of membranes, and the management of the newborn in relation to GBS carrier status of the mother are also revised. These recommendations are only addressed to the prevention of GBS early neonatal infection, are not effective against late neonatal infection.
Collapse
|
45
|
Gayford K, McCarthy A, Hague WM. A case of postpartum Group B streptococcal meningitis. Obstet Med 2012; 5:25-6. [PMID: 27579128 DOI: 10.1258/om.2011.110040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2011] [Indexed: 11/18/2022] Open
Abstract
A case of postpartum Group B streptococcal meningitis, a rare complication of an invasive infection by a common maternal commensal bacterium, which demonstrates the need to develop rapid and accurate antepartum and intrapartum screening methods for this organism.
Collapse
Affiliation(s)
| | | | - William M Hague
- Women's and Children's Hospital, Adelaide; Discipline of Obstetrics, School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide, SA, Australia
| |
Collapse
|
46
|
Melin P. Neonatal group B streptococcal disease: from pathogenesis to preventive strategies. Clin Microbiol Infect 2011; 17:1294-303. [PMID: 21672083 DOI: 10.1111/j.1469-0691.2011.03576.x] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Streptococcus agalactiae, or group B streptococcus (GBS), remains the leading cause of neonatal sepsis and meningitis, as early-onset or late-onset diseases (EOD, LOD). Where consensus guidelines to detect and treat intrapartum women with GBS colonization have been widely adopted, incidence of neonatal EOD has dramatically declined. In response to both successful impacts on the incidence of GBS-EOD and analyses of missed opportunities, the first American guidelines for prevention issued in the 1990s have since been adapted in several stages to improve their efficacy. In some countries in Europe, nationwide guidelines, whether screening-based or risk-based, for the prevention of neonatal GBS diseases have also been issued and adopted, with the expected impact on incidence of GBS-EOD. In spite of universal screening, in spite of the great progress that has been made, GBS-EOD continues to occur and the GBS burden remains a significant public health issue. Continuous efforts to improve screening for GBS status continue to be important and may be able to take advantage of new rapid diagnostic technologies. The current screening-based strategy for prevention is highly effective but imperfect. Given the challenges, limitations and potential complications of maternal intrapartum prophylaxis, a new approach is still needed. Maternal immunization against GBS is an attractive alternative for the prevention of not only neonatal diseases but also stillbirths and maternal diseases. Vaccines against GBS may become the most effective and sustainable long-term preventive strategy.
Collapse
Affiliation(s)
- P Melin
- National Reference Centre for Group B Streptococci, Medical Microbiology Department, University Hospital of Liege, Liege, Belgium.
| |
Collapse
|