scholarly journals Simultaneous identification of Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium, and Trichomonas vaginalis ‒ multicenter evaluation of the Alinity m STI assay

2021 ◽  
Vol 45 (4-5) ◽  
pp. 213-223
Author(s):  
Emily Goldstein ◽  
Laura Martinez-García ◽  
Martin Obermeier ◽  
Allison Glass ◽  
Maria Krügel ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Trichomonas Vaginalis ◽  
Clinical Performance ◽  
Mycoplasma Genitalium ◽  
Sexually Transmitted ◽  
Appropriate Treatment ◽  
International Multicenter Study ◽  
Simultaneous Identification ◽  
International Multicenter

Abstract Objectives Accurate and rapid diagnosis of sexually transmitted infections (STIs) is essential for timely administration of appropriate treatment and reducing the spread of the disease. We examined the performance of the new Alinity m STI assay, a qualitative real-time multiplex PCR test for simultaneous identification of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Mycoplasma genitalium (MG), and Trichomonas vaginalis (TV) run on the fully automated Alinity m platform. Methods This international, multicenter study evaluated the accuracy, reproducibility, and clinical performance of the Alinity m STI assay compared to commonly used STI assays in a large series of patient samples encountered in clinical practice. Results The Alinity m STI assay identified accurately and precisely single and mixed pathogens from an analytical panel of specimens. The Alinity m STI assay demonstrated high overall agreement rates with comparator STI assays (99.6% for CT [n=2,127], 99.2% for NG [n=2,160], 97.1% for MG [n=491], and 99.4% for TV [n=313]). Conclusions The newly developed Alinity m STI assay accurately detects the 4 sexually transmitted target pathogens in various collection devices across clinically relevant specimen types, regardless of single or mixed infection status.

scholarly journals Profile of sexually transmitted infections causing urethritis and a related inflammatory reaction in urine among heterosexual males: A flow-cytometry study

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0242227
Author(s):  
Stanislav Tjagur ◽  
Reet Mändar ◽  
Margus Punab
Keyword(s):  
Flow Cytometry ◽  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Trichomonas Vaginalis ◽  
Screening Method ◽  
Mycoplasma Genitalium ◽  
University Hospital ◽  
Control Group ◽  
Sexually Transmitted ◽  
Diagnostic Threshold

Background Information about the use of flow cytometry in the diagnosis of male urethritis is scarce. The current study aims to evaluate the performance of flow cytometry on first-voided urine in males with infectious urethritis (Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium and Trichomonas vaginalis). Methods Male patients of the Andrology Centre (Tartu University Hospital, Estonia) were recruited during the period March 2015 –January 2018. Cases included 306 patients with infectious urethritis caused by Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium and/or Trichomonas vaginalis. The control group consisted of 192 patients without uro-genital complaints, negative tests for C. trachomatis, N. gonorrhoeae, M. genitalium and T. vaginalis from first-voided urine and no inflammation in first-voided urine, mid-stream urine and urine after prostate massage. C. trachomatis, N. gonorrhoeae, M. genitalium and T. vaginalis were detected from first-voided urine using polymerase chain reaction (PCR) method. First-voided urine was analysed using urine particle analyzer Sysmex UF-500i. Results The most prevalent infection was chlamydia (64.1%), followed by Mycoplasma genitalium (20.9%), gonorrhoea (7.8%) and trichomoniasis (1.6%). Gonorrhoea caused the highest flow-cytometric leucocyte/bacteria count, followed by chlamydia and Mycoplasma genitalium. Trichomonas vaginalis showed nearly absent inflammation in first-voided urine. Using an empiric flow-cytometry diagnostic threshold for urethritis in first-voided urine (leucocytes ≥ 15/μl and bacteria ≥ 20/μl) the total calculated sensitivity was over 90%. However, when applying such criteria for deciding whether to perform first-voided urine PCR for C. trachomatis, N. gonorrhoeae, M. genitalium and T. vaginalis or not, we could miss 23 cases with infectious urethritis that makes up 7,5% of all proven cases. Conclusions Flow cytometry of first-voided urine can be considered as a rapid and objective screening method in case of suspected male infectious urethritis.

scholarly journals Prevalence of urogenital, anal, and pharyngeal infections with Chlamydia trachomatis, Neisseria gonorrhoeae, and Mycoplasma genitalium: a cross-sectional study in Reunion island

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
A. Calas ◽  
N. Zemali ◽  
G. Camuset ◽  
J. Jaubert ◽  
R. Manaquin ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Mycoplasma Genitalium ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Transmitted Infection ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Urogenital Infection ◽  
High Prevalence

Abstract Background Recommendations for sexually transmitted infection (STI) screening vary significantly across countries. This study evaluated the prevalence of urogenital and extragenital infections with Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Mycoplasma genitalium (MG) in patients visiting a French STI clinic in the Indian Ocean region to determine whether current STI screening practices should be updated. Methods This cross-sectional study examined all patients who visited the STI clinic between 2014 and 2015. Triplex polymerase chain reaction screening for CT, NG, and MG was performed on urine, vaginal, pharyngeal, and anal specimens (FTD Urethritis Basic Kit, Fast Track Diagnostics, Luxembourg). Results Of the 851 patients enrolled in the study, 367 were women (367/851, 43.2%) and 484 were men (484/851, 56.0%). Overall, 826 urogenital specimens (826/851, 97.1%), 606 pharyngeal specimens (606/851, 71.2%), and 127 anal specimens (127/851, 14.9%) were taken from enrolled patients. The prevalence of urogenital CT and MG was high in women ≤25 years (19/186, 10.21%; 5/186, 2.69%) and in men who have sex with women ≤30 years (16/212, 7.54%; 5/212, 2.36%). Among patients with urogenital CT infection, 13.7% (7/51) had urethritis. All patients with urogenital MG infection were asymptomatic. Men who have sex with men had a high prevalence of pharyngeal CT (2/45, 4.44%) and NG (3/44, 6.81%) and a high prevalence of anal CT (2/27, 7.41%), NG (2/27, 7.40%), and MG (1/27, 3.70%). After excluding patients with concomitant urogenital infection, extragenital infections with at least 1 of the 3 pathogens were found in 20 swabs (20/91, 21.9%) taken from 16 patients (16/81, 19.7%), all of them asymptomatic. Conclusions Routine multisite screening for CT, NG, and MG should be performed to mitigate the transmission of STIs in high-risk sexually active populations.

scholarly journals Improved molecular laboratory productivity by consolidation of testing on the new random-access analyzer Alinity m

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Martin Obermeier ◽  
Monia Pacenti ◽  
Robert Ehret ◽  
Francesco Onelia ◽  
Rory Gunson ◽  
...  
Keyword(s):  
Trichomonas Vaginalis ◽  
Random Access ◽  
Mycoplasma Genitalium ◽  
Transmitted Infection ◽  
Sexually Transmitted ◽  
B Virus ◽  
Immunodeficiency Virus ◽  
International Multicenter Study ◽  
Laboratory Productivity ◽  
Laboratory Workflow

AbstractObjectivesAutomated molecular analyzers have accelerated diagnosis, allowing earlier intervention and better patient follow-up. A recently developed completely automated molecular analyzer, Alinity™ m (Abbott), offers consolidated, continuous, and random-access testing that may improve molecular laboratory workflow.MethodsAn international, multicenter study compared laboratory workflow metrics across various routine analyzers and Alinity m utilizing assays for human immunodeficiency virus type 1 (HIV-1), hepatitis C virus (HCV), hepatitis B virus (HBV), high-risk human papillomavirus (HR HPV), and sexually transmitted infection (STI) (Chlamydia trachomatis [CT]/Neisseria gonorrhoeae [NG]/Trichomonas vaginalis [TV]/Mycoplasma genitalium [MG]). Three turnaround times (TATs) were assessed: total TAT (sample arrival to result), sample onboard TAT (sample loading and test starting to result), and processing TAT (sample aspiration to result).ResultsTotal TAT was reduced from days with routine analyzers to hours with Alinity m, independent of requested assays. Sample onboard TATs for standard workflow using routine analyzers ranged from 7 to 32.5 h compared to 2.75–6 h for Alinity m. The mean sample onboard TAT for STAT samples on Alinity m was 2.36 h (±0.19 h). Processing TATs for Alinity m were independent of the combination of assays, with 100% of results reported within 117 min.ConclusionsThe consolidated, continuous, random-access workflow of Alinity m reduces TATs across various assays and is expected to improve both laboratory operational efficiency and patient care.

scholarly journals Human papillomavirus and Its Association with Other Sexually Transmitted Coinfection among Sexually Active Women from the Northeast of Brazil

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Ana Paula Almeida Cunha ◽  
Ilka Kassandra Pereira Belfort ◽  
Francisco Pedro Belfort Mendes ◽  
Gerusinete Rodrigues Bastos dos Santos ◽  
Lucas Henrique de Lima Costa ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Trichomonas Vaginalis ◽  
Positive Association ◽  
Hpv Infection ◽  
Cervical Lesions ◽  
Hpv Dna ◽  
Sexually Transmitted ◽  
Epithelial Lesions ◽  
Intraepithelial Lesions

Objective. To verify the association between HPV infection and the presence of coinfections (Chlamydia trachomatis, Trichomonas vaginalis, and Neisseria gonorrhoeae) in women in the state of Maranhão. Methods. HPV-DNA detection was performed by the nested PCR, using the primers PGMY09/11 and GP + 5/GP + 6. For the identification of sexually transmitted agents, conventional PCR was performed using the following primers: KL1/KL2 (Chlamydia trachomatis), TVA5/TVA6 (Trichomonas vaginalis), and HO1/HO3 (Neisseria gonorrhoeae). DNA-HPV positive samples were subjected to automated sequencing for genotyping. Results. Among the 353 women evaluated, 204 (57.8%) had HPV-DNA, of which 140 (68.6%) exhibited HPV/STIs, while 64 (31.4%) had the only HPV. T. vaginalis infection showed a positive association with HPV ( p = 0.003 ). Women without cervical lesions were predominant (327/92.6%); however, the largest number of lesions was reported in women who had HPV/coinfections (18/8.8%). Multiple regression analysis showed that both HPV only and the concomitant presence of HPV/STI were able to indicate the occurrence of epithelial lesions (R = 0.164; R2 = 0.027). Conclusion. The findings suggest that the presence of T. vaginalis can contribute to HPV infection, and HPV/IST association may influence the development of cervical intraepithelial lesions that are precursors of cervical cancer.

scholarly journals Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis screening and treatment of pregnant women in Port-au-Prince, Haiti

2017 ◽  
Vol 28 (11) ◽  
pp. 1130-1134 ◽  
Author(s):  
Claire C Bristow ◽  
Patricia Mathelier ◽  
Oksana Ocheretina ◽  
Daphne Benoit ◽  
Jean W Pape ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Pregnant Women ◽  
Laboratory Testing ◽  
Trichomonas Vaginalis ◽  
Opportunistic Infections ◽  
Newborn Health ◽  
Vaginal Swab ◽  
Sexually Transmitted ◽  
High Prevalence

In Haiti, routine screening for Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) among pregnant women is not conducted; yet these sexually transmitted infections (STIs) are associated with adverse birth and newborn health outcomes. We aimed to assess the acceptability and feasibility of screening and the prevalence of STIs among pregnant women in Port-au-Prince, Haiti. Pregnant women of at least 18 years of age who attend Haitian Study Group for Kaposi’s sarcoma and Opportunistic Infections (GHESKIO) clinics in Port-au-Prince, Haiti provided self-collected vaginal swab specimens. Laboratory testing was done with Xpert® CT/NG and Xpert® TV. The results of this study showed that of the 322 pregnant women who visited GHESKIO for their regular scheduled appointments, 300 (93.2%) consented for CT, NG, and TV testing. Of those, 107 women (35.7%) tested positive for at least one STI. There were 42 (14.7%) cases of CT, 8 (2.8%) NG, and 83 (29.0%) TV infections. Most infections were treated – 122 of 133 (91.7%). In summary, we found that it was highly acceptable and feasible to implement CT, NG, and TV screening among pregnant women in Port-au-Prince, Haiti. We found high prevalence of STIs among pregnant women, which suggest that STI screening in this population may be warranted.

scholarly journals Microbiological Characteristics of Chlamydia trachomatis and Neisseria gonorrhoeae Infections in South African Women

2015 ◽  
Vol 54 (1) ◽  
pp. 200-203 ◽  
Author(s):  
Jan Henk Dubbink ◽  
Dewi J. de Waaij ◽  
Myrte Bos ◽  
Lisette van der Eem ◽  
Cécile Bébéar ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Trichomonas Vaginalis ◽  
Mycoplasma Genitalium ◽  
Cross Sectional Study ◽  
African Women ◽  
Transmitted Infection ◽  
Cross Sectional ◽  
Content Type ◽  
South African Women

We analyzed data of 263 women with at least one genital or anorectal sexually transmitted infection from a cross-sectional study conducted in rural South Africa. We provide new insights concerning the concurrence ofChlamydia trachomatis,Neisseria gonorrhoeae,Mycoplasma genitalium, andTrichomonas vaginalisinfections as well as the characteristics of bacterial loads.

scholarly journals INCIDENCE OF SEXUALLY TRANSMITTED INFECTIONS: LOCAL STUDY IN UKRAINE

World Science ◽  
2018 ◽  
Vol 2 (8(36)) ◽  
pp. 4-7
Author(s):  
Fedorych P. V. ◽  
Mavrov G. I.
Keyword(s):  
Human Papillomavirus ◽  
Chlamydia Trachomatis ◽  
Sexually Transmitted Infections ◽  
Trichomonas Vaginalis ◽  
Ureaplasma Urealyticum ◽  
Mycoplasma Hominis ◽  
Mycoplasma Genitalium ◽  
Local Study ◽  
Sexually Transmitted ◽  
Clinically Significant

Introduction.The structure of incidence of sexually transmitted infections is changing constantly. Information on such changes supports correct planning of clinical and diagnostic activities of institutions providing specialized medical care by qualified specialists.Objective:to investigate the prevalence of sexually transmitted infections with pathogens clinically significant to the genitourinary system in Ukraine and at the local level.Materials and methods. Polymerase chain reaction was used to test the biological material obtained from the genitourinary clinical specimens from subjects with sexually transmitted infections, who underwent clinical and laboratory examinations in Oleksandrivsk Clinical Hospital (Kyiv, Ukraine) for Chlamydia trachomatis, Mycoplasma hominis, Mycoplasma genitalium, Ureaplasma urealyticum, Trichomonas vaginalis, Human papillomavirus, and Neisseria gonorrhoea. During 2017, 607 subjects of both genders, including 295 (48.6%) females and 312 (51.4%) males, were examined. Their mean age was 32±3.5.Findings. Chlamydia trachomatis was found in 159 (26.2%) of 607 examined subjects – 85 males and 74 females. Mycoplasma hominis was found in 122 of 585 (21.1%) examined subjects – 64 males and 58 females. Mycoplasma genitalium, respectively, in 17 (6.62%) of 258 subjects – 6 males and 11 females. Ureaplasma urealyticum was found in the largest number of subjects (305, i.e. in 48.77% of 601 examined subjects) – 157 males and 148 females. Trichomonas vaginalis was found in 28 (5.23%) of 535 subjects – 15 males and 13 females. Human papillomavirus was found in 158 of 297 (53.2%) examined subjects – 88 males and 70 females. Neisseria gonorrhea was found in 33 of 297 (8.45%) subjects – 8 males and 25 females.Conclusions. As suggested by the local study of the sexually transmitted infections incidence in Ukraine, the most clinically significant for the genitourinary system are Human papillomavirus (53.2%), Ureaplasma urealyticum (48.77%), Chlamydia trachomatis (26.2%) and Mycoplasma hominis (21.1%). Therefore, tests for these pathogens in the specified region is currently the most appropriate during diagnostic examinations and counselling of subjects with genitourinary infections.

scholarly journals Online prescribing for sexually transmitted infections – what’s on offer? An evaluation of internet pharmacies based in the United Kingdom

2021 ◽  
Author(s):  
Elizabeth Okecha ◽  
Emily Boardman ◽  
Saleha Patel ◽  
Emile Morgan
Keyword(s):  
Herpes Simplex ◽  
Chlamydia Trachomatis ◽  
Neisseria Gonorrhoeae ◽  
Sexual Health ◽  
Sexually Transmitted Infections ◽  
Trichomonas Vaginalis ◽  
National Guidelines ◽  
Sexually Transmitted ◽  
Internet Pharmacies ◽  
Online Pharmacies

AbstractBackgroundOnline pharmacies offer an alternative approach for patients to manage their sexual health. Our aim was to determine the type of antimicrobials sold as treatment for sexually transmitted infections (STIs) by UK internet pharmacies and if providers were adhering to national guidelines.MethodsA search engine results page (SERP) generated a list of registered UK online pharmacies offering treatment for the following infections: Chlamydia trachomatis, Neisseria gonorrhoeae, Herpes simplex and Trichomonas vaginalis. An initial audit in 2017 benchmarked each provider against the British Association of Sexual Health & HIV (BASHH guidelines. Results were fed back to each provider before re-audit in 2020. Websites selling antibiotics for non-gonococcal urethritis (NGU) and Mycoplasma genitalium were included at re-audit.ResultsThere were 30 pharmacies identified in 2017 of which, five were excluded. Treatment could be obtained for Neisseria gonorrhoeae from five pharmacies without providing a culture result; three (60%) pharmacies sold BASHH approved antibiotics for Neisseria gonorrhoeae. All 25 pharmacies sold Chlamydia trachomatis treatment; 22 (88%) offered first line treatment options but no website assessed for proctitis. Herpes simplex treatment was sold on 22 websites of which, 13 (59%) offered treatment recommended by BASHH. Trichomonas vaginalis treatment was sold by four websites in line with BASHH. Results at re-audit showed an improvement in standards, although advice before, during and after treatment remained variable.DiscussionOur work has allowed us to engage with providers to improve prescribing within the UK online pharmacy industry. However, tougher regulation is needed in order to embed sustainable change for patients who choose to access treatment online.

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