References
1 Bradford PA. Extended-spectrum beta-lactamases in the 21st century: characterization, epidemiology, and detection of this important resistance threat. Clin Microbiol Rev 2001;14:933-51, table of contents.
2 Ghafourian S, Sadeghifard N, Soheili S, Sekawi Z. Extended Spectrum Beta-lactamases: Definition, Classification and Epidemiology.Curr Issues Mol Biol 2015;17:11-21.
3 Pitout JD, Laupland KB. Extended-spectrum beta-lactamase-producing Enterobacteriaceae: an emerging public-health concern. Lancet Infect Dis 2008;8:159-66.
4 Canton R, Novais A, Valverde A, Machado E, Peixe L, Baquero F, et al. Prevalence and spread of extended-spectrum beta-lactamase-producing Enterobacteriaceae in Europe. Clin Microbiol Infect 2008;14 Suppl 1:144-53.
5 Woerther PL, Burdet C, Chachaty E, Andremont A. Trends in human fecal carriage of extended-spectrum beta-lactamases in the community: toward the globalization of CTX-M. Clin Microbiol Rev2013;26:744-58.
6 Pai H, Lyu S, Lee JH, Kim J, Kwon Y, Kim JW, et al. Survey of extended-spectrum beta-lactamases in clinical isolates of Escherichia coli and Klebsiella pneumoniae: prevalence of TEM-52 in Korea. J Clin Microbiol 1999;37:1758-63.
7 Yan JJ, Wu SM, Tsai SH, Wu JJ, Su IJ. Prevalence of SHV-12 among clinical isolates of Klebsiella pneumoniae producing extended-spectrum beta-lactamases and identification of a novel AmpC enzyme (CMY-8) in Southern Taiwan. Antimicrob Agents Chemother2000;44:1438-42.
8 Ho PL, Tsang DN, Que TL, Ho M, Yuen KY. Comparison of screening methods for detection of extended-spectrum beta-lactamases and their prevalence among Escherichia coli and Klebsiella species in Hong Kong. APMIS 2000;108:237-40.
9 Eppes CS, Clark SL. Extended-spectrum beta-lactamase infections during pregnancy: a growing threat. Am J Obstet Gynecol 2015;213:650-2.
10 Denkel LA, Schwab F, Kola A, Leistner R, Garten L, von Weizsacker K, et al. The mother as most important risk factor for colonization of very low birth weight (VLBW) infants with extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E).J Antimicrob Chemother 2014;69:2230-7.
11 Stapleton PJ, Murphy M, McCallion N, Brennan M, Cunney R, Drew RJ. Outbreaks of extended spectrum beta-lactamase-producing Enterobacteriaceae in neonatal intensive care units: a systematic review. Arch Dis Child Fetal Neonatal Ed 2016;101:F72-8.
12 Rodriguez-Bano J, Picon E, Gijon P, Hernandez JR, Ruiz M, Pena C, et al. Community-onset bacteremia due to extended-spectrum beta-lactamase-producing Escherichia coli: risk factors and prognosis.Clin Infect Dis 2010;50:40-8.
13 Papst L, Beovic B, Seme K, Pirs M. Two-year prospective evaluation of colonization with extended-spectrum beta-lactamase-producing Enterobacteriaceae: time course and risk factors. Infect Dis (Lond) 2015;47:618-24.
14 Seale J, Millar M. Perinatal vertical transmission of antibiotic-resistant bacteria: a systematic review and proposed research strategy. BJOG 2014;121:923-8.
15 Redline RW, Heller D, Keating S, Kingdom J. Placental diagnostic criteria and clinical correlation–a workshop report.Placenta 2005;26 Suppl A:S114-7.
16 Lee Y, Kim HJ, Choi SJ, Oh SY, Kim JS, Roh CR, et al. Is there a stepwise increase in neonatal morbidities according to histological stage (or grade) of acute chorioamnionitis and funisitis?: effect of gestational age at delivery. J Perinat Med2015;43:259-67.
17 Baek YJ, Kim YA, Kim D, Shin JH, Uh Y, Shin KS, et al. Risk Factors for Extended-Spectrum-beta-Lactamase-Producing Escherichia coli in Community-Onset Bloodstream Infection: Impact on Long-Term Care Hospitals in Korea. Ann Lab Med 2021;41:455-62.
18 Rettedal S, Lohr IH, Bernhoff E, Natas OB, Sundsfjord A, Oymar K. Extended-spectrum beta-lactamase-producing Enterobacteriaceae among pregnant women in Norway: prevalence and maternal-neonatal transmission. J Perinatol 2015;35:907-12.
19 Nanayakkara D, Liyanapathirana V, Kandauda C, Gihan C, Ekanayake A, Adasooriya D. Maternal vaginal colonization with selected potential pathogens of neonatal sepsis in the era of antimicrobial resistance, a single center experience from Sri Lanka. BMC Infect Dis 2018;18:351.
20 Kang CI, Wi YM, Lee MY, Ko KS, Chung DR, Peck KR, et al. Epidemiology and risk factors of community onset infections caused by extended-spectrum beta-lactamase-producing Escherichia coli strains.J Clin Microbiol 2012;50:312-7.
21 Kang CI, Cheong HS, Chung DR, Peck KR, Song JH, Oh MD, et al. Clinical features and outcome of community-onset bloodstream infections caused by extended-spectrum beta-lactamase-producing Escherichia coli. Eur J Clin Microbiol Infect Dis 2008;27:85-8.
22 Park SY, Kang CI, Wi YM, Chung DR, Peck KR, Lee NY, et al. Risk factors and molecular epidemiology of community-onset, multidrug resistance extended-spectrum beta-lactamase-producing Escherichia coli infections. Korean J Intern Med 2017;32:146-57.
23 Kuperman AA, Koren O. Antibiotic use during pregnancy: how bad is it? BMC Med 2016;14:91.
24 Stokholm J, Schjorring S, Eskildsen CE, Pedersen L, Bischoff AL, Folsgaard N, et al. Antibiotic use during pregnancy alters the commensal vaginal microbiota. Clin Microbiol Infect2014;20:629-35.
25 Martinez de Tejada B. Antibiotic use and misuse during pregnancy and delivery: benefits and risks. Int J Environ Res Public Health 2014;11:7993-8009.
26 Berghella V, Rafael TJ, Szychowski JM, Rust OA, Owen J. Cerclage for short cervix on ultrasonography in women with singleton gestations and previous preterm birth: a meta-analysis. Obstet Gynecol 2011;117:663-71.
27 Alfirevic Z, Stampalija T, Roberts D, Jorgensen AL. Cervical stitch (cerclage) for preventing preterm birth in singleton pregnancy.Cochrane Database Syst Rev 2012:CD008991.
28 Brown RG, Chan D, Terzidou V, Lee YS, Smith A, Marchesi JR, et al. Prospective observational study of vaginal microbiota pre- and post-rescue cervical cerclage. BJOG 2019;126:916-25.
29 Gerson KD, McCarthy C, Elovitz MA, Ravel J, Sammel MD, Burris HH. Cervicovaginal microbial communities deficient in Lactobacillus species are associated with second trimester short cervix.Am J Obstet Gynecol 2020;222:491 e1- e8.
30 Quinn M. Final report of the MRC/RCOG randomised controlled trial of cervical cerclage. Br J Obstet Gynaecol 1993;100:1154-5.
31 Kindinger LM, MacIntyre DA, Lee YS, Marchesi JR, Smith A, McDonald JA, et al. Relationship between vaginal microbial dysbiosis, inflammation, and pregnancy outcomes in cervical cerclage. Sci Transl Med 2016;8:350ra102.
32 Kessler I, Shoham Z, Lancet M, Blickstein I, Yemini M, Miskin A, et al. Complications associated with genital colonization in pregnancies with and without cerclage. Int J Gynaecol Obstet1988;27:359-63.
33 Carey JC, Klebanoff MA. Is a change in the vaginal flora associated with an increased risk of preterm birth? Am J Obstet Gynecol 2005;192:1341-6; discussion 1346-7.
34 Donders GGG, Bellen G, Grinceviciene S, Ruban K, Vieira-Baptista P. Aerobic vaginitis: no longer a stranger. Res Microbiol 2017;168:845-58.
35 Krohn MA, Thwin SS, Rabe LK, Brown Z, Hillier SL. Vaginal colonization by Escherichia coli as a risk factor for very low birth weight delivery and other perinatal complications. J Infect Dis1997;175:606-10.
36 Saez-Lopez E, Guiral E, Fernandez-Orth D, Villanueva S, Gonce A, Lopez M, et al. Vaginal versus Obstetric Infection Escherichia coli Isolates among Pregnant Women: Antimicrobial Resistance and Genetic Virulence Profile. PLoS One 2016;11:e0146531.
37 Hyle EP, Lipworth AD, Zaoutis TE, Nachamkin I, Fishman NO, Bilker WB, et al. Risk factors for increasing multidrug resistance among extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella species. Clin Infect Dis 2005;40:1317-24.
38 Koizumi A, Maruyama K, Ohki Y, Nakayama A, Yamada Y, Kurosawa H, et al. Prevalence and Risk Factor for Antibiotic-resistant Escherichia coli Colonization at Birth in Premature Infants: A Prospective Cohort Study. Pediatr Infect Dis J 2020;39:546-52.
39 Cools P. The role of Escherichia coli in reproductive health: state of the art. Res Microbiol 2017;168:892-901.
40 Kim JY, Sung JH, Chang KH, Choi SJ, Oh SY, Roh CR, et al. Abnormal vaginal colonization by gram-negative bacteria is significantly higher in pregnancy conceived through infertility treatment compared to natural pregnancy. J Matern Fetal Neonatal Med 2017;30:556-61.
41 Tameliene R, Barcaite E, Stoniene D, Buinauskiene J, Markuniene E, Kudreviciene A, et al. Escherichia coli colonization in neonates: prevalence, perinatal transmission, antimicrobial susceptibility, and risk factors. Medicina (Kaunas) 2012;48:71-6.
42 Mayor-Lynn K, Gonzalez-Quintero VH, O’Sullivan MJ, Hartstein AI, Roger S, Tamayo M. Comparison of early-onset neonatal sepsis caused by Escherichia coli and group B Streptococcus. Am J Obstet Gynecol 2005;192:1437-9.
43 Foessleitner P, Gasser J, Kiss H, Flunt A, Presterl E, Petricevic L, et al. Vaginal colonization of extended-spectrum beta-lactamase-producing bacteria during pregnancy: An observational study. Eur J Obstet Gynecol Reprod Biol 2020;246:86-9.
44 Danino D, Melamed R, Sterer B, Porat N, Hazan G, Gushanski A, et al. Mother-to-child transmission of extended-spectrum-beta-lactamase-producing Enterobacteriaceae. J Hosp Infect 2018;100:40-6.
45 Seo YB, Lee J, Kim YK, Lee SS, Lee JA, Kim HY, et al. Randomized controlled trial of piperacillin-tazobactam, cefepime and ertapenem for the treatment of urinary tract infection caused by extended-spectrum beta-lactamase-producing Escherichia coli. BMC Infect Dis 2017;17:404.
46 Ljungquist O, Kampmann C, Resman F, Riesbeck K, Tham J. Probiotics for intestinal decolonization of ESBL-producing Enterobacteriaceae: a randomized, placebo-controlled clinical trial.Clin Microbiol Infect 2020;26:456-62.
47 American College of O, Gynecologists’ Committee on Practice B-O. Practice Bulletin No. 171: Management of Preterm Labor.Obstet Gynecol 2016;128:e155-64.
48 Nygren P, Fu R, Freeman M, Bougatsos C, Klebanoff M, Guise JM, et al. Evidence on the benefits and harms of screening and treating pregnant women who are asymptomatic for bacterial vaginosis: an update review for the U.S. Preventive Services Task Force. Ann Intern Med 2008;148:220-33.
Table 1. Comparison of maternal ESBL-E vaginal colonization according to the study period