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2.
Sex Transm Dis ; 51(6): 388-392, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38733972

ABSTRACT

BACKGROUND: Standard-of-care nucleic acid amplification tests (routine NAATs) for Neisseria gonorrhoeae (GC) and Chlamydia trachomatis (CT) can take several days to result and therefore delay treatment. Rapid point-of-care GC/CT NAAT (rapid NAAT) could reduce the time to treatment and therefore onward transmission. This study evaluated the incremental cost per infectious day averted and overall cost of implementation associated with rapid compared with routine NAAT. METHODS: Prospective sexually transmitted infection (STI) treatment data from men who have sex with men and transgender women in San Diego who received rapid NAAT between November 2018 and February 2021 were evaluated. Historical time from testing to treatment for routine NAAT was abstracted from the literature. Costs per test for rapid and routine NAAT were calculated using a micro-costing approach. The incremental cost per infectious day averted comparing rapid to routine NAAT and the costs of rapid GC/CT NAAT implementation in San Diego Public Health STI clinics were calculated. RESULTS: Overall, 2333 individuals underwent rapid NAAT with a median time from sample collection to treatment of 2 days compared with 7 to 14 days for routine NAAT equating to a reduction of 5 to 12 days. The cost of rapid and routine GC/CT NAAT was $57.86 and $18.38 per test, respectively, with a cost-effectiveness of between $2.43 and $5.82 per infectious day averted. The incremental cost of rapid NAAT improved when at least 2000 tests were performed annually. CONCLUSIONS: Although rapid GC/CT NAAT is more expensive than routine testing, the reduction of infectious days between testing and treatment may reduce transmission and provide improved STI treatment services to patients.


Subject(s)
Chlamydia Infections , Chlamydia trachomatis , Gonorrhea , Homosexuality, Male , Neisseria gonorrhoeae , Nucleic Acid Amplification Techniques , Humans , Male , Gonorrhea/diagnosis , Gonorrhea/economics , Chlamydia Infections/diagnosis , Chlamydia Infections/economics , Nucleic Acid Amplification Techniques/economics , Neisseria gonorrhoeae/isolation & purification , Chlamydia trachomatis/isolation & purification , Adult , California/epidemiology , Cost-Benefit Analysis , Prospective Studies , Female , Point-of-Care Testing/economics , Transgender Persons
3.
PLoS One ; 19(5): e0302785, 2024.
Article in English | MEDLINE | ID: mdl-38768150

ABSTRACT

INTRODUCTION: The rates of gonorrhea and chlamydia have been increasing in the years preceding the COVID19 pandemic. Because most gonorrhea and chlamydia infections are located in the oropharynx and rectum for men who have sex with men (MSM), and because at-home self-collected swabs for these infections are not licensed by Health Canada or the United States Food and Drug Administration, decreased accessed to in-person care during and since the COVID19 pandemic potentially means missed case findings. OBJECTIVES: To evaluate the performance of at-home self-collected pharyngeal and rectal swabs for gonorrhea and chlamydia nucleic acid amplification testing. METHODOLOGY: All persons who contacted our Sexual Health Clinic and who had a clinical indication to complete oral and/or rectal swabs for gonorrhea and chlamydia were invited to complete at-home swabs in advance of their scheduled appointments. We mailed swabs and instructions to those who consented. Participants brought these swabs to their scheduled in clinic appointments, where we repeated the same swabs. All matching swabs were sent to the laboratory for analysis to determine concordance. RESULTS: From September 8, 2022 to July 18, 2023, we enrolled 296 eligible participants who provided 1184 swabs. For analysis, cancelled specimens and specimens with invalid results were excluded, leaving 1032 swabs for comparison. We identified 66 STI diagnoses in 47 unique participants. Overall accuracy was high (exceeding 99%), except for rectal chlamydia, which was 96.0%. While the performance of self-swabs for chlamydia was lower compared to gonorrhea, at-home swabs identified six chlamydia infections that were missed by in-clinic collected swabs (two pharyngeal, four rectal). Removing these six cases as "false positives" increased overall accuracy for chlamydia detection to 99.7% (pharyngeal) and 97.8% (rectal). CONCLUSION: Self-collected at-home swabs had good performance acceptable for gonorrhea and chlamydia nucleic acid amplification testing.


Subject(s)
Chlamydia Infections , Chlamydia trachomatis , Gonorrhea , Neisseria gonorrhoeae , Pharynx , Rectum , Specimen Handling , Humans , Chlamydia trachomatis/isolation & purification , Chlamydia trachomatis/genetics , Chlamydia Infections/diagnosis , Chlamydia Infections/microbiology , Gonorrhea/diagnosis , Gonorrhea/microbiology , Male , Neisseria gonorrhoeae/isolation & purification , Neisseria gonorrhoeae/genetics , Rectum/microbiology , Pharynx/microbiology , Specimen Handling/methods , Adult , Female , Nucleic Acid Amplification Techniques/methods , Homosexuality, Male , Middle Aged , Self Care , Young Adult
4.
West J Emerg Med ; 25(3): 358-367, 2024 May.
Article in English | MEDLINE | ID: mdl-38801042

ABSTRACT

Introduction: Bacterial urinary tract infections (UTI) and some sexually transmitted infections (STI) can have overlapping signs and symptoms or nonspecific findings, such as pyuria on urinalysis. Furthermore, results from the urine culture and the nucleic acid amplification test for an STI may not be available during the clinical encounter. We sought to determine whether gonorrhea, chlamydia, and trichomoniasis are associated with bacteriuria, information that might aid in the differentiation of STIs and UTIs. Methods: We used multinomial logistic regression to analyze 9,650 encounters of female patients who were aged ≥18 years and who underwent testing for STIs. The ED encounters took place from April 18, 2014-March 7, 2017. We used a multivariable regression analysis to account for patient demographics, urinalysis findings, vaginal wet-mount results, and positive or negative (or no) findings from the urine culture and testing for Neisseria gonorrhoeae, Chlamydia trachomatis, or Trichomonas vaginalis. Results: In multivariable analysis, infection with T vaginalis, N gonorrhoeae, or C trachomatis was not associated with having a urine culture yielding 10,000 or more colony-forming units per mililiter (CFU/mL) of bacteria compared with a urine culture yielding less than 10,000 CFU/mL or no urine culture obtained. The diagnosis of a UTI in the ED was not associated with having a urine culture yielding 10,000 or more CFU/mL compared with a urine culture yielding less than 10,000 CFU/mL. Conclusion: After adjusting for covariates, no association was observed between urine culture results and testing positive for trichomoniasis, gonorrhea, or chlamydia. Our results suggest that having a concurrent STI and bacterial UTI is unlikely.


Subject(s)
Gonorrhea , Sexually Transmitted Diseases , Urinalysis , Urinary Tract Infections , Humans , Female , Adult , Urinary Tract Infections/diagnosis , Urinary Tract Infections/microbiology , Urinary Tract Infections/urine , Sexually Transmitted Diseases/urine , Sexually Transmitted Diseases/diagnosis , Sexually Transmitted Diseases/microbiology , Gonorrhea/diagnosis , Gonorrhea/urine , Urinalysis/methods , Chlamydia Infections/urine , Chlamydia Infections/diagnosis , Middle Aged , Chlamydia trachomatis/isolation & purification , Emergency Service, Hospital , Trichomonas vaginalis/isolation & purification , Bacteriuria/diagnosis , Bacteriuria/urine , Bacteriuria/microbiology , Young Adult , Neisseria gonorrhoeae/isolation & purification , Urine/microbiology , Retrospective Studies , Adolescent , Trichomonas Infections/diagnosis , Trichomonas Infections/urine
5.
Front Public Health ; 12: 1348686, 2024.
Article in English | MEDLINE | ID: mdl-38770362

ABSTRACT

Background: Men who have sex with men (MSM) face significant risks of Chlamydia trachomatis (CT) and/or Neisseria gonorrhoeae (NG) infection. Nevertheless, only limited studies have looked into the site-specific infection and clearance of CT/NG. In order to prevent transmission, it is essential to understand the underlying factors that drive infection and spontaneous clearance. Methods: A 12-week cohort study examined the association between CT/NG infection, self-clearance, and sexual behaviors among MSM. The Willingness Service recruited participants who completed weekly questionnaires and provided urine, throat, and rectal swab samples. Results: The study involved 151 men, in which 51 (33.8%) were diagnosed with CT/NG infection during the study period. HIV (OR = 11.31), kissing (OR = 1.59), receptive oral sex (OR = 36.64), and insertive anal sex (OR = 19.73) constituted significant risk factors. 100% condom use (OR = 5.78) and antibiotic (OR = 7.53) were more likely to cause spontaneous clearance. Discussion: MSM may engage in riskier sexual behaviors due to insufficient knowledge and awareness of STI prevention, leading to increased susceptibility to NG/CT. It is crucial to concentrate on enhancing health education for MSM. Conclusion: This study found that the rectum was the most prevalent site of CT/NG and sexual behavior can influence the infection. Additionally, the appropriate use of antibiotics and consistent condom use may contribute to clear spontaneously.


Subject(s)
Chlamydia Infections , Gonorrhea , Homosexuality, Male , Sexual Behavior , Humans , Male , Gonorrhea/epidemiology , Chlamydia Infections/epidemiology , China/epidemiology , Homosexuality, Male/statistics & numerical data , Adult , Prospective Studies , Incidence , Risk Factors , Sexual Behavior/statistics & numerical data , Chlamydia trachomatis/isolation & purification , Surveys and Questionnaires , Neisseria gonorrhoeae/isolation & purification , Young Adult , Middle Aged
6.
Biosensors (Basel) ; 14(5)2024 May 20.
Article in English | MEDLINE | ID: mdl-38785734

ABSTRACT

Sexually transmitted diseases (STDs) are a global concern because approximately 1 million new cases emerge daily. Most STDs are curable, but if left untreated, they can cause severe long-term health implications, including infertility and even death. Therefore, a test enabling rapid and accurate screening and genotyping of STD pathogens is highly awaited. Herein, we present the development of the DNA-based 6STD Genotyping 9G Membrane test, a lateral flow strip membrane assay, for the detection and genotyping of six STD pathogens, including Trichomonas vaginalis, Ureaplasma urealyticum, Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma hominis, and Mycoplasma genitalium. Here, we developed a multiplex PCR primer set that allows PCR amplification of genomic materials for these six STD pathogens. We also developed the six ssDNA probes that allow highly efficient detection of the six STD pathogens. The 6STD Genotyping 9G Membrane test lets us obtain the final detection and genotyping results in less than 30 m after PCR at 25 °C. The accuracy of the 6STD Genotyping 9G membrane test in STD genotyping was confirmed by its 100% concordance with the sequencing results of 120 clinical samples. Therefore, the 6STD Genotyping 9G Membrane test emerges as a promising diagnostic tool for precise STD genotyping, facilitating informed decision-making in clinical practice.


Subject(s)
Chlamydia trachomatis , Genotype , Neisseria gonorrhoeae , Sexually Transmitted Diseases , Humans , Chlamydia trachomatis/genetics , Chlamydia trachomatis/isolation & purification , Neisseria gonorrhoeae/genetics , Neisseria gonorrhoeae/isolation & purification , Sexually Transmitted Diseases/microbiology , Sexually Transmitted Diseases/diagnosis , Trichomonas vaginalis/genetics , Trichomonas vaginalis/isolation & purification , Genotyping Techniques , Mycoplasma hominis/isolation & purification , Mycoplasma hominis/genetics , Ureaplasma urealyticum/genetics , Ureaplasma urealyticum/isolation & purification , DNA , Mycoplasma genitalium/genetics , Mycoplasma genitalium/isolation & purification , Biosensing Techniques , DNA, Bacterial/analysis , Multiplex Polymerase Chain Reaction/methods
7.
Diagn Microbiol Infect Dis ; 109(3): 116336, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38723452

ABSTRACT

Current guideline recommends the use of two identification methods for Neisseria gonorrhoeae. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF) is now used for primary identification and may be sufficient for definitive identification of N. gonorrhoeae. The performance of three secondary tests (BactiCard, RapID NH and NET test) were compared using 45 bacterial isolates, including 37 Neisseria species. These secondary tests demonstrated diminished specificity (67% - 88%) for N. gonorrhoeae compared with MALDI-TOF. Additionally, data from six clinical microbiology laboratories was used to compare confirmatory test costs and the agreement of results with MALDI-TOF. Discrepancies were documented for 9.4% of isolates, though all isolates (n= 288) identified by MALDI-TOF as N. gonorrhoeae were confirmed by the reference laboratory. These data demonstrate that MALDI-TOF alone is sufficient for N. gonorrhoeae identification, as secondary did not add diagnostic value but do add costs to the testing process.


Subject(s)
Gonorrhea , Neisseria gonorrhoeae , Sensitivity and Specificity , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization , Neisseria gonorrhoeae/isolation & purification , Neisseria gonorrhoeae/classification , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/economics , Humans , Gonorrhea/diagnosis , Gonorrhea/microbiology , Bacteriological Techniques/economics , Bacteriological Techniques/methods
8.
Sci Rep ; 14(1): 10496, 2024 05 07.
Article in English | MEDLINE | ID: mdl-38714714

ABSTRACT

The use of self-collected specimens as an alternative to healthcare worker-collected specimens for diagnostic testing has gained increasing attention in recent years. This systematic review aimed to assess the diagnostic accuracy of self-collected specimens compared to healthcare worker-collected specimens across different sexually transmitted infections (STIs) including Chlamydia trachomatis (CT), human papillomavirus (HPV), Mycoplasma genitalium (MG), Neisseria gonorrhoea (NG), Treponema pallidum and Trichomonas vaginalis (TV) in females. A rigorous process was followed to screen for studies in various electronic databases. The quality of included studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2 tool. There were no studies on syphilis that met the criteria for inclusion in the review. A total of six studies for chlamydia, five studies for HPV, four studies for MG, and seven studies for gonorrhoea and trichomoniasis were included in the review. However, not all studies were included in the sub-group meta-analysis. The analysis revealed that self-collected specimens demonstrated comparable diagnostic accuracy to healthcare worker-collected specimens across most STIs. This indicates that the diagnostic accuracy of self-collected specimens can provide accurate results and enhance access to diagnostic testing, potentially improving healthcare service delivery. Future research should further explore the diagnostic accuracy of self-collected specimens in larger and more diverse populations.


Subject(s)
Health Personnel , Sexually Transmitted Diseases , Specimen Handling , Humans , Female , Sexually Transmitted Diseases/diagnosis , Sexually Transmitted Diseases/microbiology , Specimen Handling/methods , Neisseria gonorrhoeae/isolation & purification , Gonorrhea/diagnosis , Chlamydia trachomatis/isolation & purification
10.
JAMA ; 331(20): 1701-1702, 2024 05 28.
Article in English | MEDLINE | ID: mdl-38683579

ABSTRACT

This Viewpoint discusses the US Food and Drug Administration's authorization of marketing an at-home testing system for chlamydia and gonorrhea as a good first step in boosting access to screening and treatment and in reducing infection rates.


Subject(s)
Chlamydia Infections , Gonorrhea , Humans , Gonorrhea/diagnosis , Chlamydia Infections/diagnosis , Neisseria gonorrhoeae/isolation & purification , Chlamydia trachomatis/isolation & purification , Female , Male , Self-Testing
11.
J Antimicrob Chemother ; 79(5): 1060-1068, 2024 May 02.
Article in English | MEDLINE | ID: mdl-38517444

ABSTRACT

BACKGROUND: Antimicrobial resistance in Neisseria gonorrhoeae is a global public health concern. Tetracycline resistance (TetR) increased from 39.4% to 75.2% between 2016 and 2021 in N. gonorrhoeae isolates collected through national surveillance in England, despite the absence of use of tetracyclines for the treatment of gonorrhoea. OBJECTIVES: We investigated whether there was correlation between bacterial sexually transmitted infection (STI) tests performed and treatment with antimicrobials, with increased TetR in N. gonorrhoeae. METHODS: We examined correlations between bacterial STI tests, antimicrobial treatment and TetR in N. gonorrhoeae, using national surveillance data from three large sexual health services (SHS) in London during 2016-20. Doxycycline prescribing data and antibiograms of a non-STI pathogen from distinct patient groups (sexual health, obstetric and paediatric), at a large London hospital, were analysed to identify if doxycycline use in SHS was associated with resistance in a non-STI organism. RESULTS: A substantial increase in TetR was observed, particularly in isolates from gay, bisexual and other MSM (GBMSM). Strong positive correlations were observed exclusively in GBMSM between N. gonorrhoeae TetR and both bacterial STI tests (r = 0.97, P = 0.01) and antimicrobial treatment (r = 0.87, P = 0.05). Doxycycline prescribing increased dramatically during the study period in SHS. Prevalence of TetR in Staphylococcus aureus was higher in isolates sourced from SHS attendees than those from other settings. CONCLUSIONS: Frequent screening of GBMSM at higher risk of STIs, such as those on pre-exposure prophylaxis (PrEP) leading to/and increased use of doxycycline for the treatment of diagnosed infections, may account for the increase in TetR in N. gonorrhoeae.


Subject(s)
Anti-Bacterial Agents , Doxycycline , Gonorrhea , Microbial Sensitivity Tests , Neisseria gonorrhoeae , Tetracycline Resistance , Neisseria gonorrhoeae/drug effects , Neisseria gonorrhoeae/isolation & purification , Humans , Gonorrhea/microbiology , Gonorrhea/epidemiology , Gonorrhea/drug therapy , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/therapeutic use , England/epidemiology , Male , Female , Doxycycline/therapeutic use , Doxycycline/pharmacology , Adult , London/epidemiology , Tetracycline/pharmacology , Tetracycline/therapeutic use
12.
Sex Transm Infect ; 100(4): 222-225, 2024 May 31.
Article in English | MEDLINE | ID: mdl-38553038

ABSTRACT

OBJECTIVES: We aimed to assess whether a self-collected oral rinse was non-inferior to clinician-collected oropharyngeal swabs to detect Neisseria gonorrhoeae (Ng) using culture and nucleic acid amplification tests (NAAT) among men who have sex with men (MSM), and whether Ng may still be detected in oral rinses for a minimum of 5 days after collection. METHODS: MSM with a positive Ng result in an oropharyngeal or pooled sample (oropharynx, urethra and anorectum) were approached. Clinician-collected oropharyngeal swabs and oral rinses (15 mL sterile water) were taken. Ng culture and NAAT (Abbott 2000m RealTime System CT/NG assay and in-house PCR) were performed. Diagnostic accuracy was assessed using sensitivity and specificity, and agreement between both techniques using Cohen's kappa statistic. Aliquots of positive oral rinses were left at room temperature for a minimum of 5 days and reanalysed using NAAT. Lastly, participants filled in a questionnaire to explore perceptions of both methods. RESULTS: We included 100 participants between June 2022 and October 2023. 45 individuals (45 of 100) had a positive Ng result in either the oral rinses (42 of 45, 93%) or the swabs (36 of 45, 80%). Sensitivity was higher for oral rinses than swabs (sensitivity=0.93/0.80, specificity=1.0/1.0, respectively) and agreement between both techniques was good (kappa=0.75, p<0.001). Of the 42 positive oral rinses, 37 remained positive after a minimum of 5 days (88.1%). Using culture, 18 individuals had a positive Ng result in either the oral rinses (8 of 18, 44%) or the swabs (16 of 18, 88%). Most participants found the oral rinse easy or very easy to use and would be willing to use the oral rinse for home-based sampling. CONCLUSION: We detected more oropharyngeal Ng infections via NAAT using oral rinses than swab samples. However, swabs were better than oral rinses for culturing Ng. Oral rinses might allow for home-based self-sampling to detect oropharyngeal Ng.


Subject(s)
Gonorrhea , Homosexuality, Male , Neisseria gonorrhoeae , Nucleic Acid Amplification Techniques , Oropharynx , Sensitivity and Specificity , Specimen Handling , Humans , Male , Neisseria gonorrhoeae/isolation & purification , Neisseria gonorrhoeae/genetics , Gonorrhea/diagnosis , Adult , Oropharynx/microbiology , Specimen Handling/methods , Belgium , Nucleic Acid Amplification Techniques/methods , Middle Aged , Urethra/microbiology , Young Adult
13.
Br J Ophthalmol ; 108(6): 788-792, 2024 May 21.
Article in English | MEDLINE | ID: mdl-38365428

ABSTRACT

BACKGROUND: Gonorrhoea is on the rise: between 2021 and 2022, a 50% and a 33% increase in diagnoses was seen, respectively, in England and the Netherlands. A concurrent rise in gonococcal keratoconjunctivitis (GKC) is a serious concern due to the potentially devastating visual complications. METHODS: This is a retrospective case series of adult GKC from two Western European tertiary ophthalmology centres between 2017 and July 2023. The clinical features, ocular complications and antimicrobial susceptibilities are reported within. RESULTS: An increased incidence was recorded at both centres, with 11 confirmed cases in the first 7 months of 2023, compared with ≤3 per year in 2017-2022. CONCLUSION: The notable increase of GKC cases in our centres in 2023 may indicate a rise across Western Europe. Enhanced, sustained, national surveillance of GKC is essential to establish incidence and antimicrobial susceptibility, to inform treatment guidelines and guide appropriate public health response.


Subject(s)
Anti-Bacterial Agents , Eye Infections, Bacterial , Gonorrhea , Keratoconjunctivitis , Microbial Sensitivity Tests , Neisseria gonorrhoeae , Tertiary Care Centers , Humans , Incidence , Retrospective Studies , Gonorrhea/epidemiology , Gonorrhea/drug therapy , Gonorrhea/microbiology , Male , Female , Neisseria gonorrhoeae/drug effects , Neisseria gonorrhoeae/isolation & purification , Adult , Middle Aged , Keratoconjunctivitis/epidemiology , Keratoconjunctivitis/microbiology , Keratoconjunctivitis/drug therapy , Anti-Bacterial Agents/therapeutic use , Tertiary Care Centers/statistics & numerical data , Eye Infections, Bacterial/epidemiology , Eye Infections, Bacterial/microbiology , Eye Infections, Bacterial/drug therapy , Aged , Europe/epidemiology , Young Adult
14.
Int J STD AIDS ; 35(6): 462-470, 2024 May.
Article in English | MEDLINE | ID: mdl-38297880

ABSTRACT

BACKGROUND: While ceftriaxone resistance remains scarce in Switzerland, global Neisseria gonorrhoeae (NG) antimicrobial resistance poses an urgent threat. This study describes clinical characteristics in MSM (men who have sex with men) diagnosed with NG infection and analyses NG resistance by phenotypic and genotypic means. METHODS: Data of MSM enrolled in three clinical cohorts with a positive polymerase chain reaction test (PCR) for NG were analysed between January 2019 and December 2021 and linked with antibiotic susceptibility testing. Bacterial isolates were subjected to whole genome sequencing (WGS). RESULTS: Of 142 participants, 141 (99%) were MSM and 118 (84%) living with HIV. Participants were treated with ceftriaxone (N = 79), azithromycin (N = 2), or a combination of both (N = 61). No clinical or microbiological failures were observed. From 182 positive PCR samples taken, 23 were available for detailed analysis. Based on minimal inhibitory concentrations (MICs), all isolates were susceptible to ceftriaxone, gentamicin, cefixime, cefpodoxime, ertapenem, zoliflodacin, and spectinomycin. Resistance to azithromycin, tetracyclines and ciprofloxacin was observed in 10 (43%), 23 (100%) and 11 (48%) of the cases, respectively. Analysis of WGS data revealed combinations of resistance determinants that matched with the corresponding phenotypic resistance pattern of each isolate. CONCLUSION: Among the MSM diagnosed with NG mainly acquired in Switzerland, ceftriaxone MICs were low for a subset of bacterial isolates studied and no treatment failures were observed. For azithromycin, high occurrences of in vitro resistance were found. Gentamicin, cefixime, cefpodoxime, ertapenem, spectinomycin, and zoliflodacin displayed excellent in vitro activity against the 23 isolates underscoring their potential as alternative agents to ceftriaxone.


Subject(s)
Anti-Bacterial Agents , Azithromycin , Ceftriaxone , Genotype , Gonorrhea , Homosexuality, Male , Microbial Sensitivity Tests , Neisseria gonorrhoeae , Phenotype , Whole Genome Sequencing , Humans , Neisseria gonorrhoeae/genetics , Neisseria gonorrhoeae/drug effects , Neisseria gonorrhoeae/isolation & purification , Switzerland/epidemiology , Male , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/therapeutic use , Gonorrhea/drug therapy , Gonorrhea/microbiology , Gonorrhea/epidemiology , Gonorrhea/diagnosis , Adult , Homosexuality, Male/statistics & numerical data , Ceftriaxone/pharmacology , Ceftriaxone/therapeutic use , Azithromycin/therapeutic use , Azithromycin/pharmacology , Drug Resistance, Bacterial/genetics , Middle Aged , Sexually Transmitted Diseases/microbiology , Sexually Transmitted Diseases/drug therapy , Sexually Transmitted Diseases/diagnosis , Sexually Transmitted Diseases/epidemiology , Cefixime/pharmacology , Cefixime/therapeutic use
15.
Sex Transm Dis ; 51(6): 400-406, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38403298

ABSTRACT

BACKGROUND: Rectal Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections among men who have sex with men (MSM) are escalating public health concerns. This study aimed to explore (1) the reliability of self-reported sexual positioning as an indicator for rectal CT and NG screening, and (2) factors associated with rectal CT and NG infections in Shenzhen, China. METHODS: A cross-sectional study was conducted in 2 settings in Shenzhen, China, from April 1, 2021, to March 31, 2022. Data on sociodemographic characteristics, sexual behaviors, and basic CT knowledge were collected. Urine and self-collected rectal swabs were collected for CT and NG testing. RESULTS: In total, 195 MSM participated in the study, and 5.1% tested positive for urogenital CT, 29.2% for rectal CT, 1.0% for urogenital NG, and 8.2% for rectal NG. Among those who reported exclusively insertive anal sex, 69.2% of CT infections and 85.7% of NG infections would have remained undetected with urine testing alone. Risk factors for rectal CT infection included engaging in both insertive and receptive anal sex, with a significant association found for coinfection with rectal NG. CONCLUSIONS: Self-reported sexual positioning was found to be an unreliable indicator for CT and NG screening, as a substantial proportion of infections would have remained undetected. The findings suggest that CT and NG screening in China should be offered to all MSM regardless of self-reported sexual positioning, and that the dual CT/NG testing is recommended.


Subject(s)
Chlamydia Infections , Chlamydia trachomatis , Gonorrhea , Homosexuality, Male , Neisseria gonorrhoeae , Self Report , Sexual Behavior , Humans , Male , Gonorrhea/diagnosis , Gonorrhea/epidemiology , Chlamydia Infections/diagnosis , Chlamydia Infections/epidemiology , China/epidemiology , Cross-Sectional Studies , Adult , Neisseria gonorrhoeae/isolation & purification , Chlamydia trachomatis/isolation & purification , Mass Screening , Rectum/microbiology , Young Adult , Risk Factors , Rectal Diseases/microbiology , Rectal Diseases/diagnosis , Rectal Diseases/epidemiology , Sexual and Gender Minorities , Middle Aged , Reproducibility of Results
16.
Eur J Clin Microbiol Infect Dis ; 43(5): 1009-1012, 2024 May.
Article in English | MEDLINE | ID: mdl-38407691

ABSTRACT

Antimicrobial resistance in Neisseria gonorrhoeae (NG) is increasing worldwide. Second-line treatments with macrolides or fluoroquinolones are an option for NG infections in some cases following the STI guideline recommendations. In our study, we compared the gradient diffusion test using EUCAST 2024 breakpoints with a new molecular method using the Allplex™ NG&DR assay (Seegene®) including A2059G/C2611 mutations (23S rRNA) associated with high/moderate-level macrolide resistance and S91F mutation (gyrA) relationship with fluoroquinolone resistance in NG isolates (n = 100). We calculated the sensitivity, specificity, and correlation of the molecular test for fluoroquinolone using the gradient diffusion as the reference method. In twenty-three strains was not detected any mutation associated with macrolides or fluoroquinolone resistance. No A2059G/C2611T mutations were detected, and the S91F mutations were detected in 77 out of the 100 isolates screened. Twenty-three NG isolates were reported to be resistant to azithromycin (ECOFF: >1 mg/L), and 78 NG isolates were resistant to ciprofloxacin (MIC: >0.06 mg/L). The molecular method showed a sensitivity of 96.1% and, a specificity of 90.9% for fluoroquinolone susceptibility, but the statistical analysis between the molecular test and gradient diffusion test was not statistically significant for fluoroquinolone resistance (p = 1). Statistical analysis was not performed for macrolides because of the absence of positive RT-PCR results. According to our data, Allplex™ assay cannot replace the gradient diffusion test for macrolide resistance. However, the assay could be used to test fluoroquinolone resistance in NG isolates as a replacement for phenotypic methods.


Subject(s)
Anti-Bacterial Agents , Drug Resistance, Bacterial , Fluoroquinolones , Gonorrhea , Macrolides , Microbial Sensitivity Tests , Neisseria gonorrhoeae , Fluoroquinolones/pharmacology , Neisseria gonorrhoeae/drug effects , Neisseria gonorrhoeae/genetics , Neisseria gonorrhoeae/isolation & purification , Macrolides/pharmacology , Anti-Bacterial Agents/pharmacology , Humans , Drug Resistance, Bacterial/genetics , Microbial Sensitivity Tests/methods , Gonorrhea/microbiology , Gonorrhea/drug therapy , Mutation , Sensitivity and Specificity , RNA, Ribosomal, 23S/genetics
18.
Emerg Infect Dis ; 29(4): 848-850, 2023 04.
Article in English | MEDLINE | ID: mdl-36918374

ABSTRACT

We retrospectively screened oropharyngeal and rectal swab samples originally collected in California, USA, for Chlamydia trachomatis and Neisseria gonorrhoeae testing for the presence of monkeypox virus DNA. Among 206 patients screened, 17 (8%) had samples with detectable viral DNA. Monkeypox virus testing from mucosal sites should be considered for at-risk patients.


Subject(s)
Chlamydia Infections , Gonorrhea , Mpox (monkeypox) , Humans , California/epidemiology , Chlamydia Infections/diagnosis , Chlamydia Infections/epidemiology , Chlamydia trachomatis/genetics , Chlamydia trachomatis/isolation & purification , DNA , Gonorrhea/diagnosis , Monkeypox virus/genetics , Monkeypox virus/isolation & purification , Neisseria gonorrhoeae/genetics , Neisseria gonorrhoeae/isolation & purification , Retrospective Studies , Mpox (monkeypox)/diagnosis
19.
BMC Pregnancy Childbirth ; 22(1): 194, 2022 Mar 09.
Article in English | MEDLINE | ID: mdl-35264142

ABSTRACT

BACKGROUND: Sexually transmitted infections (STIs) during pregnancy may increase the risk of adverse pregnancy outcomes. STI syndromic management is standard of care in South Africa but has its limitations. We evaluated the impact of diagnosing and treating curable STIs during pregnancy on adverse pregnancy and birth outcomes. METHODS: We combined data from two prospective studies of pregnant women attending public sector antenatal care (ANC) clinics in Tshwane District and Cape Town, South Africa. Pregnant women were enrolled, tested and treated for STIs. We evaluated the association between any STI at the first ANC visit and a composite adverse pregnancy outcome (miscarriage, stillbirth, preterm birth, early neonatal death, or low birthweight) using modified Poisson regression models, stratifying by HIV infection and adjusting for maternal characteristics. RESULTS: Among 619 women, 61% (n = 380) were from Tshwane District and 39% (n = 239) from Cape Town; 79% (n = 486) were women living with HIV. The prevalence of any STI was 37% (n = 228); C. trachomatis, 26% (n = 158), T. vaginalis, 18% (n = 120) and N. gonorrhoeae, 6% (n = 40). There were 93% (n = 574) singleton live births, 5% (n = 29) miscarriages and 2% (n = 16) stillbirths. Among the live births, there were 1% (n = 3) neonatal deaths, 7% (n = 35) low birthweight in full-term babies and 10% (n = 62) preterm delivery. There were 24% (n = 146) for the composite adverse pregnancy outcome. Overall, any STI diagnosis and treatment at first ANC visit was not associated with adverse outcomes in women living with HIV (adjusted relative risk (aRR); 1.43, 95% CI: 0.95-2.16) or women without HIV (aRR; 2.11, 95% CI: 0.89-5.01). However, C. trachomatis (aRR; 1.57, 95% CI: 1.04-2.39) and N. gonorrhoeae (aRR; 1.69, 95% CI: 1.09-3.08), were each independently associated with the composite adverse outcome in women living with HIV. CONCLUSION: Treated STIs at the first ANC visit were not associated with adverse pregnancy outcome overall. In women living with HIV, C. trachomatis or N. gonorrhoeae at first ANC were each independently associated with adverse pregnancy outcome. Our results highlights complex interactions between the timing of STI detection and treatment, HIV infection and pregnancy outcomes, which warrants further investigation.


Subject(s)
HIV Infections/complications , Mass Screening/methods , Pregnancy Complications, Infectious/diagnosis , Pregnancy Outcome/epidemiology , Sexually Transmitted Diseases/diagnosis , Adult , Chlamydia trachomatis/isolation & purification , Community Health Centers , Female , Humans , Neisseria gonorrhoeae/isolation & purification , Pregnancy , Prenatal Care , Prevalence , Prospective Studies , South Africa/epidemiology , Specimen Handling/instrumentation , Trichomonas vaginalis/isolation & purification
20.
PLoS One ; 17(2): e0263531, 2022.
Article in English | MEDLINE | ID: mdl-35213551

ABSTRACT

BACKGROUND: Gonorrhea caused by Neisseria gonorrhoeae is the second most prevalent curable sexually transmitted infection worldwide. Female Sex Workers (FSWs) are at a higher risk of contracting gonorrhea due to their risky sexual behaviors like inconsistent condom use and multiple sexual partners. We determined the prevalence and risk factors associated with gonorrhea and its antimicrobial susceptibility pattern among symptomatic FSWs attending Sexual Workers Outreach Program (SWOP) city clinic in Nairobi, Kenya. METHODS: Using convenience sampling, we recruited 379 female sex workers from SWOP City clinic in Nairobi County. We administered a semi-structured questionnaire to collect data on socio-demographics and behavioral risk factors associated with gonorrhea. We also conducted three focus groups. Two endocervical swabs were collected from each participant by the attending physician for the laboratory identification of Neisseria gonorrhoeae. An antimicrobial susceptibility test was performed using the disc diffusion method. RESULTS: Twenty-four out of 379 (6.3%) participants tested positive for gonorrhea by PCR. The significant risk factors associated with gonorrhea were having multiple sexual partners in the previous two weeks, primary education, and being in the age group of 38-49 years (p < 0.05). From the qualitative data, sex work disclosure, and difficulty in engaging protected sex with their partner, and unprotected sex with their clients due to more money from the client, PREP, and alcohol use made the female sex workers vulnerable to gonorrhea exposure and or risky sexual behavior. The culture-positive sample result yielded complete (100%) resistance to all the antimicrobials used. CONCLUSION: Neisseria gonorrhoeae infection is prevalent among symptomatic FSWs in Nairobi. Multiple sexual partners, being in age group 38-49 years and having primary education were the factors associated with gonorrhea among the study participants. Based on our identification of a highly resistant isolate, we strongly recommend increasing capacity for culture-based diagnosis and susceptibility testing.


Subject(s)
Gonorrhea/diagnosis , Neisseria gonorrhoeae/isolation & purification , Sex Workers , Sexually Transmitted Diseases/diagnosis , Adult , Condoms , Female , Gonorrhea/epidemiology , Gonorrhea/microbiology , Gonorrhea/pathology , Humans , Kenya/epidemiology , Middle Aged , Neisseria gonorrhoeae/pathogenicity , Risk Factors , Sexual Behavior , Sexual Partners , Sexually Transmitted Diseases/epidemiology , Sexually Transmitted Diseases/microbiology , Sexually Transmitted Diseases/pathology , Surveys and Questionnaires , Unsafe Sex
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