Science AI Journal
Immunology and Microbiology · Research topic

Open research questions in Reproductive tract infections research

66 unresolved questions extracted from the limitations and future-work sections of 621 Reproductive tract infections research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The endometrial microbiome has been implicated in implantation success, and intrauterine peripheral blood mononuclear cell (PBMC) therapy has been proposed to improve endometrial receptivity; however, its effects on the endometrial microbial environment remain poorly understood.

    Baseline Endometrial Microbiome Composition Determines Response Following Intrauterine Peripheral Blood Mononuclear Cell (PBMC) Therapy in Assisted Reproduction Patients · 2026 · DOI

  • Background: Female Fournier's gangrene (FG) is an underrecognized obstetric and gynecologic infectious emergency that frequently arises from vulvar, Bartholin gland, and episiotomy-related sources and carries high mortality.

    Admission interleukin-6 and carbapenemase carriage independently predict 30-day mortality in female Fournier's gangrene: a multicenter cohort · 2026 · DOI

  • Beyond well-established reproductive sequelae such as tubal infertility, ectopic pregnancy, and chronic pelvic pain, we also summarize evidence linking PID to a broad spectrum of under-recognized systemic complications, including ovarian and colorectal cancer, cardiovascular and metabolic disorders, intestinal obstruction, and mental health problems.

    Inducing factors and complication risks of pelvic inflammatory disease: a review · 2026 · DOI

  • Cervicovaginal dysbiosis is an established co-factor of high-risk human papillomavirus (HPV) persistence and cervical neoplastic development, yet most studies address the bacterial compartment in isolation, leaving fungal communities and bacterial–fungal cross-kingdom interactions underexplored, particularly in Central Asian populations.

    Cervicovaginal Mycobiome Restructuring by HPV and Bacterial Community State Types in a Kazakhstani Shotgun Metagenomic Cohort: Lactobacillus iners as a Candida-Permissive Niche Associated with α-9 HPV in Cytologically Normal Women · 2026 · DOI

  • The Tanzania National Standard for Medical Laboratories 2017 outlines recommended STI testing protocols based on facility levels, yet adherence to these guidelines and associated challenges remain poorly documented.

    Assessment of the laboratory capacity for testing Sexual Transmitted Infections at 14 health facilities in Moshi Municipality, Tanzania · 2026 · DOI

  • Although antibiotics such as metronidazole and clindamycin are commonly prescribed to treat BV, recurrence rates remain high, and the impact of these treatments on bacterial extracellular vesicles (bEVs), critical mediators of host-microbe interactions, is poorly understood.

    Exposure to Antibiotics Modifies the Immune Profiles of Bacterial Extracellular Vesicles from Common Vaginal Anaerobes · 2026 · DOI

  • Despite substantial progress, Chlamydia trachomatis pathobiology remains incompletely understood at the mechanistic level.

    Chlamydia trachomatis orchestrates multifaceted host cell manipulation for immune evasion · 2026 · DOI

  • This review has limitations. First, the literature was judged to be diverse in study design, population, site of sampling, technology used for sequencing, and definition of clinical outcome, making it difficult to comprehen- sively compare studies. Second, many microbiome stud- ies are observational and causality is hard to establish. Third, low-biomass niches, including the endometrium, placenta, and amniotic fluid, are highly susceptible to contamination, batch variability, and overinterpretation of microbial DNA. Fourth, antibiotic use, hormonal, sex- ual, and obstetric risk factors were poorly reported and could have confounding effects.

    Reproductive tract microbiota and anatomical integrity: implications for fertility, pregnancy, and neonatal outcomes: a narrative review · 2026 · DOI

  • We comprehensively explore the roles of three Chlamydia species, C. pneumoniae, C. psittaci, and C. trachomatis, in commu- nity-acquired pneumonia (CAP). These pathogens collectively impose a significant public health burden due to their diverse transmission routes and nonspecific clinical presentations, which often result in delayed diagnosis and increased risks of chronic complications. While advances in diagnostic technologies have improved our understanding of these infections, limitations such as the low sensitivity of traditional serological assays for chronic infections suggest that the true incidence of these pathogens is likely underestimated, posing challenges for healthcare resource alloca- tion and prevention strategies. To address these gaps, we system- atically evaluate the epidemiological characteristics, clinical manifestations, pathogenic mechanisms, diagnostic approaches, and treatment strategies for chlamydial pneumonia. Moving beyond established diagnostic and treatment paradigms, the research then critically examines emerging challenges in antibiotic therapy, including fluoroquinolone resistance associated with gyrA mutations and the persistent state phenomenon, alongside innovative non-antibiotic therapeutic strategies targeting the chlamydial devel- opmental cycle such as JO146, host-directed therapies including autophagy induction and NLRP3 inflammasome modulation, as well as natural products (Hou et al., 2022; Liu et al., 2024; Tagini et al., 2025; Tong et al., 2025). Furthermore, the survey highlights transformative progress in vaccine development, covering candidate antigens from MOMP to novel targets such as PmpD, technological evolution to advanced platforms including OMV-based and mRNA vaccines, and the transition to first-in-human clinical trials exempli- fied by CTH522, underscoring the field’s shift from historical stagnation to a promising new era (Gerritzen et al., 2017; Hou et al., 2022; Collar et al., 2025). Despite these comprehensive insights, several broader chal- lenges remain for the field at large. The clinical translational gap between promising preclinical non-antibiotic therapies and their practical application requires urgent attention, as does the integra- tion of novel therapeutic strategies with existing antibiotic regimens to optimize patient outcomes. While rapid molecular diagnostics have advanced, their global accessibility and cost-effectiveness need improvement. The long-term consequences of chronic C. pneumo- niae infection, including potential associations with chronic dis- eases, warrant deeper investigation. Addressing these overarching issues will require continued interdisciplinary collaboration to translate scientific advances into tangible clinical benefits for patients worldwide.

    Chlamydia beyond the genital tract: a major contributor to community-acquired pneumonia · 2026 · DOI

  • Chlamydia trachomatis IgG testing may be considered as an adjunctive, low-cost screening tool during infertility evaluation to identify women at increased risk of tubal and uterine pathology, particularly in resource-constrained settings. Public health strategies focusing on STI prevention, early diagnosis, and prompt treatment are essential to reduce infertility-related morbidity. Further studies incorporating Chlamydia-negative controls and more definitive diagnostic modalities, such as laparoscopy, are recommended.

    Hysterosalpingographic Findings in Chlamydia Trachomatis IgG-Positive Infertile Women Attending the Gynaecological Clinic in Abuja. Nigeria · 2026 · DOI

  • The paper identifies that 33.3% of severe CPP patients required non-invasive ventilation and 14.3% required invasive mechanical ventilation, but lacks detailed analysis of specific ventilation parameters, timing of escalation decisions, and weaning protocols that may optimize respiratory support outcomes in severe psittacosis complicated by dysregulated immunocoagulation and microthrombosis.

    Clinical features and prognostic factors of Chlamydia psittaci pneumonia: a retrospective study · 2026 · DOI

  • The paper reports that 76.2% of severe CPP cases presented bilateral lung involvement and extensive pleural effusion (76.2% vs 27.8% in non-severe), but does not provide quantitative imaging criteria or validated scoring systems to prospectively stratify risk based on pleural effusion volume, distribution patterns, and bilateral consolidation extent on CT imaging.

    Clinical features and prognostic factors of Chlamydia psittaci pneumonia: a retrospective study · 2026 · DOI

  • The study identified D-dimer levels (cutoff 1.260 mg/L, AUC = 0.765) and lymphocyte percentage as independent predictors of severe CPP, but lacks prospective validation of dynamic D-dimer monitoring protocols to determine optimal measurement intervals and threshold adjustments for identifying high-risk patients requiring escalated respiratory support.

    Clinical features and prognostic factors of Chlamydia psittaci pneumonia: a retrospective study · 2026 · DOI

  • While targeted next-generation sequencing (tNGS) demonstrated high sensitivity and rapid turnaround time for lower respiratory tract pathogen detection, the paper explicitly states that 'reports on its application in confirming psittacosis remain scarce.' Systematic evaluation of tNGS diagnostic performance specifically for C. psittaci detection in serum versus respiratory specimens is needed to establish standardized diagnostic protocols for Chlamydia psittaci pneumonia.

    Clinical features and prognostic factors of Chlamydia psittaci pneumonia: a retrospective study · 2026 · DOI

  • The diagnostic and management pathway adopted in this report was highly dependent on metagenomic next-generation sequencing (mNGS) and MDT support. The direct applicability of this protocol is limited in clinical settings where such testing is unavailable or MDT collaboration is lacking.

    Successful azithromycin treatment of Chlamydia psittaci pneumonia in second-trimester pregnancy resulting in term delivery: a case report · 2026 · DOI

  • The lack of placental pathological examination constitutes a major methodological limitation. Despite the favorable neonatal outcome, the absence of pathological evidence precluded confirmation of placental involvement, which limited the ability to establish a definitive causal relationship between perinatal infection routes and maternal-fetal outcomes.

    Successful azithromycin treatment of Chlamydia psittaci pneumonia in second-trimester pregnancy resulting in term delivery: a case report · 2026 · DOI

  • Even though it remains unclear whether SARS-CoV-2 invades the vagina of infected women, there is no significant evidence to suggest that it causes a more frequent disturbance in the vaginal microbiota of infected women compared to that in healthy women.

    Detection of predefined bacterial species in the Vaginal Microbiota in SARS-COV-2-Positive Patients · 2024 · DOI

  • FISH studies have shown that, in addition to biofilm-related vaginosis, there are other dysbiotic changes in the vaginal microbiota that have not yet been characterized in detail.

    Bacterial vaginosis—vaginal polymicrobial biofilms and dysbiosis · 2023 · DOI

  • INTRODUCTION: Despite the considerable progress made in assisted reproductive technologies (ART), the implantation rate of transferred embryos remains low and in many cases, the reasons for failure remain unclear.

    <i>Lactobacillus crispatus</i>‐dominated vaginal microbiome and <i>Acinetobacter</i>‐dominated seminal microbiome support beneficial <scp>ART</scp> outcome · 2023 · DOI

  • Laboratory component of diagnosing the AVD causes should be complex due to the not fully understood mechanisms of regulation of vaginal biocenosis and changes in the virulence of opportunistic and pathogenic flora, leading to an increase in the frequency of mixed forms of vaginosis and their atypical course.

    Practical approaches to examination of women with abnormal vaginal discharge: a review of evidence-based recommendations 2021 · 2021 · DOI

  • Epidemiological data are lacking with regard to infertility after primary orchitis of infectious origin; however, up to 25% of testicular biopsies obtained from infertile men reveal focal inflammatory reactions.

    Urogenital Infection as a Risk Factor for Male Infertility · 2017 · DOI

  • Given the association between chlamydial infection and epididymitis leading to obstructive azoospermia, these findings suggest a growing and underrecognized contributor to male factor infertility.

    RISING CHLAMYDIA RATES AMONG REPRODUCTIVE-AGE MEN IN A HIGH-BURDEN STATE: IMPLICATIONS FOR MALE FACTOR INFERTILITY · 2026 · DOI

  • In endometriosis, alterations in the vaginal microbiome and host glycosylation have been reported, yet ecological properties connecting these systems remain unclear.

    Vaginal resistome redundancy is associated with microbial metabolic potential and host glycomic features in endometriosis · 2026 · DOI

  • Rising multidrug resistance threatens standard empirical antibiotic regimens, yet female-specific data integrating inflammatory biomarkers with the genomic resistome are scarce.

    Admission interleukin-6 and carbapenemase carriage independently predict 30-day mortality in female Fournier's gangrene: a multicenter cohort · 2026 · DOI

  • ing multicenter datasets, clinical outcome information, and molecular epidemiological approaches are warranted to better characterize the evolving distribution and resistance patterns of vaginal bacterial isolates in maternal and child healthcare settings.

    Distribution and antimicrobial susceptibility profiles of bacterial isolates from vaginal discharge specimens among hospitalized patients in a tertiary maternal and child healthcare hospital in Shenzhen, China · 2026 · DOI

Most-cited papers in Reproductive tract infections research

Most recent work

Find a gap in your own Reproductive tract infections research sub-topic

This page shows what the Reproductive tract infections research literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Immunology and Microbiology

Immune cells in cancer
82 open questions
T-cell and B-cell Immunology
75 open questions
Psoriasis: Treatment and Pathogenesis
70 open questions
Antibiotic Use and Resistance
68 open questions
interferon and immune responses
58 open questions
HIV Research and Treatment
56 open questions
Immune Cell Function and Interaction
54 open questions
Bacterial Infections and Vaccines
52 open questions
66 open questions have been extracted from the limitations and future-work passages of 621 Reproductive tract infections research papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.