Epidemiological observations of invasive group B Streptococcus infections in six major hospitals in Peninsular Malaysia

Objective:To address the lack of research on invasive group B Streptococcus(GBS)infections in Malaysia and Southeast Asia through a comprehensive analysis of GBS isolates obtained from hospitals.Methods:Medical records from patients with GBS infection isolated from the sterile site,such as blood and cerebrospinal fluid from 14 July 2019 to 15 December 2020,were reviewed from six major hospitals in Peninsular Malaysia.Inclusion criteria were invasive GBS,sterile sites and non-repeated GBS isolated from the same patients in the same admission.Viable isolates were re-identified for GBS and serotyped.Results:A total of 118 patients were eligible,with a majority of non-pregnant adults(76.3%).Over half of the patients(62.7%)had underlying medical conditions,with diabetes as the most common disease,followed by respiratory disease,renal disease,cardiovascular disease and skin and soft tissue disease.The most common manifestations were sepsis,followed by soft tissue abscess,diabetic foot ulcer,wet gangrene and cellulitis.The overall mortality was 7.6%.The most common serotype was serotype桋.Conclusions:Invasive GBS infection among non-pregnant adults showed a rising trend,particularly among diabetic individuals.The study underscores the importance of reducing risk factors and highlights the necessity of developing GBS vaccination as a preventive strategy for both infants and adults.

Invasive group B streptococcal infection in a patient with post splenectomy for hypersplenism secondary to liver cirrhosis and portal hypertension

BACKGROUND:Splenectomy in patients with liver cirrhosis(LC)is expected to become more common owing to its efficacy on portal hemodynamics.In this report we describe an alarming case of group B streptococcus(GBS)infection after splenectomy in a patient with LC.METHODS:A 72-year-old woman with a history of LC was admitted to our emergency department because of respiratory failure.The patient had received left lateral segmentectomy of the liver and splenectomy three months before admission.Pulmonary examination revealed significant wheezing during inspiration and expiration,but no crackles and stridor.Chest radiography and CT showed no infiltrates.A presumptive diagnosis of bronchial asthma caused by upper respiratory infection was made.Four days after admission,GBS infection was confirmed by blood culture and penicillin G was administered.Antibiotics were given intravenously for a total of 12 days.RESULTS:The patient was discharged on the 12th day after admission.CONCLUSIONS:Although efficacy of splenectomy in patients with LC has been reported,immune status should be evaluated for a longer period.Patients who have undergone splenectomy are highly susceptible to bacteria;moreover,LC itself is an independent risk factor for mortality in patients with sepsis.Since prophylaxis against GBS has not been established,immediate action should be taken.Emergency physicians should be aware of invasive GBS infection in the context of the critical risk factors related to splenectomy and LC,particularly the expected increase of splenectomy performed in LC patients.

Norovirus Infection and Histo-blood Group Antigens in Children Hospitalized with Diarrhea in Lulong and Chenzhou in China

Norovirus （NOV） is a pathogen that commonly causes viral diarrhea in children. Studies indicate that NoV recognizes human histo-blood group antigens （HBGAs） as cell attachment factors. In order to explore the correlation between of NoV infection and HBGAs, a cross-sectional study was conducted in children less than five years old who were hospitalized with diarrhea in two areas of China between November 2014 and February 2015. Of the paired stool and saliva samples taken from 424 children,

Severe monobacterial necrotizing soft tissue infection by group A Streptococcus:A surgical emergency

Eight percent of necrotizing soft tissue infections(NSTI) are attributable to group A Streptococci(GAS),and among these,50%develop streptococcal toxic shock syndrome.The reported mortality associated with NSTI reaches 32%.We present cases of two healthy individuals with minor GAS skin infection which developed to a rapidly progressed NSTI and sepsis despite of the antibiotic treatment,aiming to discuss the lessons learned from the course and management of these patients.

Prevalence of Malaria Infection and ABO Human Blood Group in Dar-es-Salaam, Tanzania

The main objective of this study was to determine the relationship between occurrence of malaria infection with that of human blood group in Dar-es-Salaam Tanzania. The study was based on data collected randomly from the patients who were screened for malaria of all age groups for a period of three months at Mission Mikocheni Hospital. During this time period, a total of 430 blood samples were collected. From the study findings, it is clear that more than 50% of the patients tested were positive for malaria. Further analysis revealed that about 50% of malaria positive patients were type “O” blood group.

Level of Acceptance of COVID-19 Vaccine and Its Determinants among High Risk Groups for Severe COVID-19 Infection Living in Mogadishu Somalia

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, which is widely referred to as “COVID-19”, has been infecting more than 5.5 million over 144 countries. A vaccine is considered to be the most awaiting intervention and hundreds of global R&D institutions engaged in unprecedented speed to develop the vaccine. The availability of COVID-19 vaccines may not translate into its uptake. Although governments will provide the vaccines, their uptake is voluntary. Objective: This study was carried out to evaluate the level of acceptance of COVID-19 vaccine and it’s determinants among high risk groups for severe COVID-19 infection living in Mogadishu Somalia. Methods: The study was cross-sectional, descriptive analysis conducted to obtain reliable information about the acceptance of COVID-19 vaccine and it is determinants among high-risk groups living in Mogadishu, Somalia. The calculated sample size was 404 using Cochran’s formula = Z2p(1 − p)/d2 and addition of 5% non-respondent rate. According to PESS population estimate in 2020, there are 17 districts. We grouped them into 2 strata and through simple random sampling one district was selected from each strata. After randomly selecting the two districts, three sub districts were randomly selected from each and then every second house (1, 3, 5) in the main roads will be selected. If target population were not found in the second selected house, the next house will be taken until sample size is obtained. Results: 59.4% of respondents were willing to accept and take vaccination while 40.6% of them were not accepting the vaccination. Being afraid of the side effect was the most common reason for not accepting the vaccine Conclusion: More than one third of respondents (40.6%) were not willing to accept the vaccination, knowledge towards COVID-19 was strongly associated with acceptance level of COVID-19 vaccine. Recommendation: Multi-sector organized awareness campaigns involving FMH as well as local authorities and civil society to enhance level of knowledge of community towards COVID-19.

Genotyping of E. coli Isolated from Urinary Tract Infection Patients Containing B-Lactamase Resistance Gene CTX-M Group 1 in Sanandaj Medical Health Centers

CTX-M-producing bacteria are known as a resistant source against oxyimino-cephalosporin such as cefotaxime and ceftazidime;although laboratory diagnosis of this gene has not been properly defined. The aims of this study are determining the rates of prevalence of CTX-M and CTX-M group 1 in the Escherichia coli (E. coli) obtained from urinary tract infections (UTI), and also determining their genetic relationship in the city of Sanandaj. In current study, 180 E. coli strains isolated from urinary tract infections were used. Sensitivity to common antibiotics was studied by the disc diffusion method. Phenotypic detection of isolated ESBL-producing starins was done by the combination disc test. CTX-M and CTX-M1 genes were detected using the PCR method and finally, the possible clonal relationship between isolates was determined using the REP-PCR method. 89 samples were ESBL-positive. The PCR assay used for detecting the CTX-M gene, showed that 48 samples out of 180 samples (26.66%) contained that gene;also among these 48 samples, 23 (12.77%) had CTX-M group 1. Based on the REP-PCR assay, 48 genotypes among 48 samples were CTX-M-positive. Results from the REP-PCR assay indicated that the clonal propagation theory of one epidemic strain of Escherichia coli is not apply, i.e. all CTX-M-producing species are not originated from one single strain and the gene is spread between different isolates. Therefore, hospitals and their employees must be more hygiene and, proper disposal of hospital waste can help to prevent the spread of different resistances.

Two-stage revision in periprosthetic knee joint infections

Periprosthetic joint infection(PJI)following total knee arthroplasty is one of the most catastrophic and costly complications that carries significant patient wellness as well as economic burdens.The road to efficiently diagnosing and treating PJI is challenging,as there is still no gold standard method to reach the diagnosis as early as desired.There are also international controversies with respect to the best approach to manage PJI cases.In this review,we highlight recent advances in managing PJI following knee arthroplasty surgery and discuss in depth the two-stage revision method.

Cognitive behavioral therapy group intervention for HIV transmission risk behavior in perinatally infected adolescents

Purpose: This study analyzed treatment effects of cognitive behavioral therapy (CBT) group counseling intervention on HIV transmission risk behavior, depression, anxiety, and alcohol use in HIV perinatally infected adolescents attending an HIV clinical care center in Uganda, Africa. Method: A total of 186 adolescents were randomly assigned to an experimental or control arm and assigned into groups of 11 - 16 adolescents. The experimental groups received an 80-minute CBT based weekly intervention for 8 consecutive weeks, while the control groups received only standard group care. Data from self report assessments were analyzed at pre- and post-test using repeated measures of analysis of variance. The participants, analyzed by variable, included 115 for sexual behavior, 106 for depression, 88 for anxiety, and 115 for alcohol use. Results: The results from the study show a large significant difference (p = 0.006) between the experimental and control groups on the anxiety variable. There were no significant differences between the experimental and control groups on the variables of sexual behavior (p = 0.876), depression (p = 0.700), and alcohol use (p = 0.815). There was an indication of reduced levels of HIV sexual transmission risk behavior, depression, and alcohol use levels in the participants in both the experimental and control groups. Conclusions: Risky sexual behavior places HIV perinatally infected adolescents at risk of re-infection, sexually transmitted diseases, and transmitting HIV to their sexual partners. CBT group counseling intervention equipped the participating adolescents with appropriate life skills to deal with psychological distress and anxiety often seen in their lives and may be useful in routine medical care to reduce transmission risks and improve wellness and call for its incorporation into HIV preventive programs and counselor education.

Detection of Streptococci in the Throat Swabs from Upper Respiratory Tract Infections in Kurdistan Region

The study was conducted for the detection of streptococcus bacteria of two groups of people with pharyngitis and tonsillitis. All the plates with α-haemolytic and β-haemolytic colonies were identified by conventional methods. β-haemolytic colonies was further identified by observing its sensitivity towards bacitracin disc tested on sheep blood agar plate. Alpha-hemolytic colonies on blood agar plate were identified with optchin disc. Different bacteria which included Streptococcus pyogenes, S. agalactiae, S. pnenmoniae and S. celis that had proportions 48.57%, 51.43%, 59.1% and 40.9% respectively isolated by the sensitivity test （depends on agents bacitracin and optchin）. Isolates of beta-Streptococcal which included S. pyogenes at child group （A） and the isolates alpha- Streptococcal which included S. pnenmoniae at adults group （B） showed marked rise.

慢性阻塞性肺疾病合并肺部感染影响因素调查及血清IL-16、CD40、HMGB1变化及意义

目的探究慢阻肺合并肺部感染(PI)影响因素及血清白细胞介素-16(IL-16)、CD40、高迁移率族蛋白B1(HMGB1)变化。方法回顾性分析2020年7月—2023年6月于本院接受治疗的113例慢阻肺患者临床资料,根据是否发生PI分为感染组34例和非感染组79例。收集患者一般资料,比较两组患者血清IL-16、CD40、HMGB1水平,采用单因素及Logistics回归分析慢阻肺患者发生PI的危险因素。结果慢阻肺患者中PI发病率为30.09%(34/113);PI组IL-16、CD40、HMGB1水平均高于非PI组(均P<0.05);Logistics回归分析显示,吸烟史、糖尿病史、住院时间≥15 d、长期使用抗生素、机械通气、IL-16、CD40、HMGB1是慢阻肺发生PI的独立危险因素(均P<0.05)。结论吸烟史、糖尿病史、住院时间≥15 d、长期使用抗生素、机械通气IL-16、CD40、HMGB1是慢阻肺发生PI的独立危险因素。

女性压力性尿失禁术后并发尿路感染风险模型构建

目的构建并探讨女性压力性尿失禁(SUI)术后并发尿路感染风险模型的临床应用价值。方法回顾性分析2021年5月至2023年4月江汉大学附属医院武汉市第六医院收治的300例女性SUI患者的临床资料。统计术后尿路感染发生情况,分析并发尿路感染的影响因素,构建Logistic回归模型。结果300例女性SUI患者术后6周尿路感染发生率为10.00%;SUI严重程度、合并糖尿病、导尿天数及血清高迁移率族蛋白1(HMGB1)、Toll样受体4(TLR4)、核因子κB(NF-κB)水平均为SUI术后尿路感染发生的影响因素(P<0.05);Logistic回归模型的曲线下面积(AUC)为0.887,外部验证显示模型的灵敏度及特异度分别为91.82%、95.51%,总正确率为94.00%。结论SUI术后尿路感染影响因素涉及SUI严重程度、合并糖尿病、导尿天数及血清HMGB1、TLR4、NF-κB水平,据此构建的风险模型对尿路感染预防具有指导意义。

Association of ABO blood group and Plasmodium falciparum malaria in Dore Bafeno Area,Southern Ethiopia

Objective:To assess the distribution of ABO blood group and their relationship with Plasmodium falciparum(P.falciparum) malaria among febrile outpatients who sought medical attention at Dore Bafeno Health Center,Southern Ethiopia.Methods:A total of 269 febrile outpatients who visited Dore Bafeno Health Center,Southern Ethiopia,were examined for malaria and also tested for ABO blood groups in January 2010.The blood specimens were collected by finger pricking,stained with Geimsa,and examined microscopically.Positive cases of the parasitemia were counted.CareStart^(TM) Malaria PflPv Combo was also used to test the blood specimens for malaria.ABO blood groups were determined by agglutination test using ERYCLONE antisera.Data on socio-demographic characteristics and treatment status of the participants were also collected.Chi-square and ANOVA tests were used to assess the difference between frequencies and means,respectively.Results:Out of a total of 269 participants,178(66.2%) febrile patients were found to be infected with Plasmodium parasites,among which 146(54.3%),28(10.4%),and 4(1.5%) belonged to P.falciparum,P.vivax,and mixed infections,respectively.All febrile patients were also tested for ABO blood groups and 51.3%,23.5%,21.9%and 3.3%were found to be blood types of 0,A,B and AB,respectively.Both total malaria infection and P.falciparum infection showed significant association with blood types(P<0.05).The proportion of A or B but not 0 phenotypes was higher(P<0.05) in individuals with P.falciparum as compared with non-infected individuals.The chance of having P.falciparum infection in patients with blood groups A,B and AB was 2.5,2.5 and 3.3times more than individuals showing blood 0 phenotypes,respectively.The mean P.falciparum malaria parasitemia for blood groups A,B,AB,and 0 were 3 744/μ L,1 805/ μ L,5 331/μ L,and1 515/μ L,respectively(P<0.01).Conclusions:The present findings indicate that individuals of blood groups A,B and AB are more susceptible to P.falciparum infection as compared with individuals of blood group O.Nevertheless,further in depth studies are required to clearly establish the role that ABO blood group plays in P.falciparum malaria.

Group A streptococcal antigen exposed rat model to investigate neurobehavioral and cardiac complications associated with post-streptococcal autoimmune sequelae

Background:The neuropsychiatric disorders due to post-streptococcal autoimmune complications such as Sydenham's chorea(SC)are associated with acute rheumatic fever and rheumatic heart disease(ARF/RHD).An animal model that exhibits char-acteristics of both cardiac and neurobehavioral defects in ARF/RHD would be an important adjunct for future studies.Since age,gender,strain differences,and geno-types impact on the development of autoimmunity,we investigated the behavior of male and female Wistar and Lewis rat strains in two age cohorts(6 weeks and 12 weeks)under normal husbandry conditions and following exposure to group A streptococcus(GAS).Methods:Standard behavioral assessments were performed to determine the impair-ments in fine motor control(food manipulation test),gait and balance(beam walk-ing test),and obsessive-compulsive behavior(grooming and marble burying tests).Furthermore,electrocardiography,histology,and behavioral assessments were per-formed on male and female Lewis rats injected with GAS antigens.Results:For control Lewis rats there were no significant age and gender dependent differences in marble burying,food manipulation,beam walking and grooming be-haviors.In contrast significant age-dependent differences were observed in Wistar rats in all the behavioral tests except for food manipulation.Therefore,Lewis rats were selected for further experiments to determine the effect of GAS.After ex-posure to GAS,Lewis rats demonstrated neurobehavioral abnormalities and cardiac pathology akin to SC and ARF/RHD,respectively.Conclusion:We have characterised a new model that provides longitudinal stability of age-dependent behavior,to simultaneously investigate both neurobehavioral and cardiac abnormalities associated with post-streptococcal complications.

孕晚期产前抗生素治疗B族链球菌感染对新生儿结局、血清炎症因子及B族链球菌药物敏感试验结果的影响

目的探究孕晚期产前抗生素治疗B族链球菌(GBS)感染对新生儿结局、血清炎症因子及GBS药物敏感试验结果的影响。方法选取2020年1月至2022年12月期间成都市新都区人民医院收治的60例GBS阳性孕妇所生的新生儿作为研究对象,依据孕母产前是否采用抗生素治疗分为对照组(n=29)和观察组(n=31)。对照组未给予预防性抗生素治疗,观察组根据药物敏感试验结果给予抗生素治疗。比较两组孕妇妊娠结局、新生儿结局以及新生儿出生6、24 h血清白细胞介素-6(IL-6)、降钙素原、C反应蛋白(CRP)水平,并分析新生儿GBS药物敏感试验结果。结果31例孕妇经药物敏感试验检查,对青霉素敏感度最高,故选择27例GBS感染孕妇进行青霉素治疗;对于青霉素过敏者有3例,2例应用克林霉素,1例应用头孢唑林。观察组孕妇不良妊娠结局总发生率为9.66%,低于对照组(31.03%),差异有统计学意义(P<0.05)。观察组新生儿不良结局总发生率、早发型GBS疾病(EOGBS)发生率分别为6.45%、6.45%,均低于对照组(27.59%、24.14%),差异均有统计学意义(P<0.05)。观察组新生儿出生后6 h血清IL-6、降钙素原、CRP水平分别为(76.21±7.96)pg/mL、(0.82±0.12)μg/L、(5.36±0.85)mg/L,24 h血清IL-6、降钙素原、CRP水平分别为(62.35±6.47)pg/mL、(0.61±0.09)μg/L、(3.15±0.64)mg/L,均低于对照组[6 h:(88.25±9.15)pg/mL、(0.92±0.15)μg/L、(8.25±1.63)mg/L;24 h:(66.21±7.11)pg/mL、(0.72±0.11)μg/L、(4.22±0.71)mg/L],差异均有统计学意义(P<0.05)。60例新生儿经药物敏感试验检查,对青霉素敏感度均大于90%。结论孕晚期产前抗生素治疗GBS感染,不仅可改善产妇妊娠结局,还可改善新生儿结局,降低EOGBS发生率,缓解炎症反应状态,且不影响新生儿药物敏感试验结果。

北京妇产医院围产期孕妇B族链球菌感染及妊娠结局的概况分析

目的分析在北京妇产医院就诊的围产期孕妇B族链球菌(GBS)感染以及妊娠结局新生儿受累感染的概况。方法收集2022年1月至2024年3月在我院就诊的围产期孕妇26351例,新生儿2015例,对其进行B族链球菌核酸检测分析。结果在26351例围产期孕妇中,有2906例为GBS阳性感染者,感染率为11.03%。其中18~24岁孕妇GBS感染率为10.70%,25~35岁孕妇GBS感染率为11.22%,36~45岁孕妇GBS感染率为10.35%,46~52岁孕妇GBS感染率为13.33%,4组年龄段B族链球菌感染率差异无统计学意义(P>0.05);根据季节分组发现春季围产期孕妇GBS感染率为10.41%,夏季孕妇GBS感染率为11.51%,秋季孕妇GBS感染率为11.83%,冬季孕妇GBS感染率为10.74%,围产期孕妇B族链球菌在不同季节的感染率差异存在统计学意义(P<0.05)。在2015例新生儿中,有124例为B族链球菌阳性感染者,感染率为6.15%;B族链球菌阳性感染孕妇中正常新生儿913例(45.31%)、不良妊娠结局1102例(54.69%),包括新生儿早产715例(53.48%)、新生儿感染108例(5.36%)、新生儿呼吸困难99例(4.91%)、胎膜早破116例(5.7%)、新生儿宫内窘迫11例(0.55%)、新生儿低血糖13例(0.65%)、新生儿代谢性酸中毒2例(0.1%)。结论北京地区围产期孕妇B族链球菌感染率为11.03%,其中以46岁至52岁年龄段感染率最高(13.33%),夏秋季节孕妇GBS感染高发,GBS阳性感染孕妇娩出新生儿的GBS感染率为6.15%,不良妊娠结局中以新生儿早产发生率最高(53.48%)。通过本研究为临床对于围产期孕妇B族链球菌感染的概况、诊疗、预防、把控妊娠结局提供可靠的数据支持。

诊断相关分组耐药菌院内感染及经济负担分析

目的分析基于DRGs的MDRO医院感染情况与经济负担,为MDRO防控提供依据。方法回顾性分析本院2021年1月-2021年12月MDRO感染情况,将DRGs同组患者分为MDRO医院感染组和非MDRO感染组,分析2组患者住院时间及住院费用。结果2021年住院患者共入组DRGs病例73150例,发生MDRO医院感染188例,感染率为0.26%。MDRO医院感染DRGs组数占全院总DRGs组数的11.64%,下呼吸道感染位居第一位。MDRO医院感染组较非MDRO感染组住院时间延长14.5d,住院总费用增加47188.03元,医疗费、医技费、护理费、药品费、耗材费、抗菌药物费、输血费等MDRO医院感染组均高于非MDRO感染组差异有统计学意义(P<0.001)。结论由DRGs支付的患者医治数据可知易感染MDRO的患者及其所在科室和大幅增加的医治费用,相关部门适时关注DRGs支付情况,及时采取针对性措施,则可降低患者MDRO感染率和经济负担。

老年糖尿病合并肺部感染患者病原菌分布及血清HSP70、HMGB1水平与病情严重程度和预后的关系

目的探讨老年糖尿病合并肺部感染患者病原菌分布情况,分析血清热休克蛋白70(HSP70)、高迁移率族蛋白B1(HMGB1)水平与病情严重程度和预后的关系。方法选择2021年1月—2023年11月西安交通大学第一附属医院呼吸内科与危重症医学科收治的2型糖尿病(T2DM)合并肺部感染患者253例为研究对象,根据出院时预后情况分为预后良好组(n=191)和预后不良组(n=62)。鉴定患者痰液中病原菌并检测血清HSP70和HMGB1水平;采用多因素Logistic回归分析老年T2DM合并肺部感染预后的影响因素;受试者工作特征曲线(ROC)分析血清HSP70和HMGB1水平对老年T2DM合并肺部感染预后的预测价值。结果预后不良组患者年龄、空腹血糖(FPG)、高血压、慢性阻塞性肺疾病(COPD)及病情重度占比显著高于预后良好组(t/χ^(2)/P=6.251/<0.001、14.949/<0.001、4.666/0.031、5.827/0.016、16.530/<0.001)。253例患者痰标本中共检出病原菌株298株,其中革兰阴性菌占比65.10%(194/298)、革兰阳性菌占比28.86%(86/298)、真菌占比6.04%(18/298)。预后不良组血清HSP70和HMGB1水平明显高于预后良好组(t=11.672、13.069,P均<0.001)。血清HSP70和HMGB1水平比较,重度>中度>轻度患者(F=54.146、231.257,P均<0.001);多因素Logistic回归显示,年龄大、HSP70高、HMGB1高、FPG高、COPD及严重程度重均为老年T2DM合并肺部感染预后的危险因素[OR(95%CI)=1.322(1.015~1.722)、1.993(1.336~2.973)、1.754(1.302~2.363)、1.876(1.401~2.512)、3.016(1.798~5.060)、3.956(2.208~7.718)];血清HSP70、HMGB1及二者联合预测老年T2DM合并肺部感染预后的曲线下面积(AUC)分别为0.785、0.772、0.897,二者联合优于各自单独预测效能(Z=3.452、3.297,P均<0.001)。结论血清HSP70、HMGB1水平与老年T2DM合并肺部感染严重程度和预后密切相关,二者联合对其预后具有较高预测价值。

新生儿GBS感染所致化脓性脑膜炎中血清维生素D和炎性细胞因子的表达及意义

目的检测新生儿B族链球菌(group B streptococcus,GBS)感染所致化脓性脑膜炎(purulent meningitis,PM)血清中维生素D、白细胞介素(interleukin,IL)-6、IL-10、肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)和C反应蛋白(c-reactive protein,CRP)的表达水平,并探讨其临床价值。方法选取2017年5月至2020年5月在秦皇岛市第一医院出生的59例GBS感染的PM新生儿纳入观察组,同期59例非GBS感染的PM新生儿(晚发败血症)纳入对照组。检测所有受试者血清维生素D、CRP、IL-6、IL-10和TNF-α水平,并进行Pearson相关性分析;利用受试者操作特征(receiver operating characteristic,ROC)曲线分析血清维生素D和炎性细胞因子对新生儿GBS感染所致PM的诊断价值。统计学方法采用t检验、χ^(2)检验和Pearson相关性分析。结果观察组与对照组孕产妇胎膜早破[47.5%(28/59)与5.1%(3/59),χ^(2)=27.345]、产时窒息[52.5%(31/59)与18.6%(11/59),χ^(2)=14.787]和产褥感染[(44.1%(26/59)与(22.0%(13/59)),χ^(2)=6.473]的发生率比较,观察组明显高于对照组(P<0.05)。观察组血清维生素D水平显著低于对照组[(13.3±2.1)μg/L与(21.1±5.0)μg/L,t=11.345],IL-6[(87.1±14.5)μg/L与(63.9±11.9)μg/L,t=9.507]、IL-10[(49.6±15.2)μg/L与(29.3±10.0)μg/L,t=8.596]、TNF-α[(76.8±19.0)μg/L与(50.0±10.8)μg/L,t=9.410]和CRP[(21.5±5.0)μg/L与(13.7±3.7)μg/L,t=9.702]水平显著高于对照组(P值均<0.05)。Pearson相关性分析结果显示,观察组血清维生素D水平分别与IL-6、IL-10、TNF-α和CRP水平呈负相关(r=-0.662、-0.644、-0.564、-0.643,P<0.05);血清维生素D、IL-6、IL-10、TNF-α和CRP单独诊断GBS感染新生儿PM的曲线下面积(area under the curve,AUC)分别为0.831(95%CI:0.757~0.904)、0.887(95%CI:0.830~0.944)、0.859(95%CI:0.793~0.925)、0.888(95%CI:0.821~0.955)、0.879(95%CI:0.820~0.938),5项联合检测的AUC为0.991(95%CI:0.978~1.000)。结论GBS感染所致的PM新生儿血清中维生素D水平降低,炎性细胞因子水平增加,对于GBS感染所致的PM具有一定的辅助诊断价值。