Home-based self-collected dried blood spot (DBS) sampling could simplify sexual health and preexposure prophylaxis care and reduce sexually transmitted infections (STIs) clinic visits for men who ...have sex with men (MSM). We compared the performance of DBS to venipuncture collected blood samples to test four STIs and creatinine concentration.
We invited MSM clients of the Amsterdam STI clinic to participate. Routinely collected peripheral blood was tested for syphilis treponemal antibody, HIV (HIV Ag/Ab), HCV (antibodies), HBV (HBsAg) and creatinine concentration. Participants received a home kit for DBS sampling, a return envelope and a questionnaire to evaluate the acceptability, feasibility and usability of DBS, measured on 5-point Likert scales, 1 representing complete disagreement and 5 complete agreement. We assessed sensitivity and specificity of DBS versus peripheral blood-based testing.
In 2020 to 2021, we included 410 participants; 211 (51.5%) returned a completed DBS card, 117 (28.5%) returned a partially filled card and 82 (20.0%) did not return a card. The sensitivity for syphilis was 90.8% and the specificity 84.3%. For both HIV Ag/Ab and HBsAg, the sensitivity and specificity were 100.0%. The sensitivity for HCV antibody was 80.0%, and the specificity was 99.2%. The DBS creatinine concentration was a mean of 5.3 μmol/L higher than in venipuncture obtained plasma. Participants' median willingness to take a future DBS was 4 (interquartile range, 3-5).
Dried blood spot may be an acceptable method among MSM for STI testing and creatinine follow-up during preexposure prophylaxis use. However, collecting enough blood on DBS cards was a challenge, and sensitivities for syphilis and HCV serology were too low.
Abstract
Background
Human papillomavirus (HPV) vaccination programs achieve substantial population-level impact, with effects extending beyond protection of vaccinated individuals. We assessed trends ...in HPV prevalence up to 8 years postvaccination among men and women in the Netherlands, where bivalent HPV vaccination, targeting HPV types 16/18, has been offered to (pre)adolescent girls since 2009 with moderate vaccination coverage.
Methods
We used data from the PASSYON study, a survey initiated in 2009 (prevaccination) and repeated biennially among 16- to 24-year-old visitors of sexual health centers. We studied genital HPV positivity from 2009 to 2017 among women, heterosexual men, and unvaccinated women using Poisson generalized estimating equation models, adjusted for individual- and population-level confounders. Trends were studied for 25 HPV types detected by the SPF10-LiPA25 platform.
Results
A total of 6354 women (64.7% self-reported unvaccinated) and 2414 heterosexual men were included. Percentual declines in vaccine types HPV-16/18 were observed for all women (12.6% per year 95% confidence interval {CI}, 10.6–14.5), heterosexual men (13.0% per year 95% CI, 8.3–17.5), and unvaccinated women (5.4% per year 95% CI, 2.9–7.8). We observed significant declines in HPV-31 (all women and heterosexual men), HPV-45 (all women), and in all high-risk HPV types pooled (all women and heterosexual men). Significant increases were observed for HPV-56 (all women) and HPV-52 (unvaccinated women).
Conclusions
Our results provide evidence for first-order herd effects among heterosexual men against HPV-16/18 and cross-protective types. Additionally, we show second-order herd effects against vaccine types among unvaccinated women. These results are promising regarding population-level and clinical impact of girls-only bivalent HPV vaccination in a country with moderate vaccine uptake.
This study presents trends in human papillomavirus (HPV) positivity since girls-only HPV vaccine introduction in the Netherlands, with moderate vaccine uptake. We show declining prevalences of vaccine types HPV-16/18 in heterosexual men and unvaccinated women, and of cross-protective types in heterosexual men.
Men who have sex with men (MSM) are at high risk for anorectal chlamydia and gonorrhoea infections. Many MSM use rectal douches in preparation for sex, which might break down the mucosal barrier ...function and facilitate the acquisition of STI. We determined whether rectal douching or sharing douching equipment was associated with anorectal chlamydia and gonorrhoea.
In a cross-sectional study among 994 MSM attending the STI outpatient clinic of Amsterdam between February and April 2011, data were collected on rectal douching, sexual behaviour and STI. We used multivariable logistic regression analysis to determine the association between rectal douching, including sharing of douching equipment, and anorectal chlamydia and gonorrhoea for those reporting receptive anal sex. We adjusted for other risk behaviour, that is, condom use, number of partners and HIV status.
Of 994 MSM, 46% (n=460) practised rectal douching, of whom 25% (n=117) shared douching equipment. Median age was 39 years (IQR 30-47), median number of sex partners in the 6 months prior to consult was five (IQR 3-10) and 289 (29.0%) participants were HIV positive. The prevalence of anorectal chlamydia and/or gonorrhoea for those reporting receptive anal sex was 9.6% (n=96). In multivariable analysis, HIV positivity (aOR=2.2, 95% CI 1.3 to 3.6), younger age (aOR=2.5, CI 1.4 to 4.5 for those aged <35 years compared with those aged ≥45 years), and more sexual partners (aOR=1.2, 95% CI 1.0 to 1.5 for 1 log increase) were significantly associated with anorectal STI. However, rectal douching or sharing douching equipment were not significantly associated with anorectal chlamydia and/or gonorrhoea (p=0.647).
Almost half of MSM used rectal douching and a quarter of these shared douching equipment. Though using douching equipment does not appear to contribute to anorectal chlamydia and gonorrhoea in this study, STI prevalence remains high and prevention strategies like early testing and treatment remain of utmost importance.
To determine time to linkage to HIV care following diagnosis and to identify risk factors for delayed linkage.
Patients newly diagnosed with HIV at sexually transmitted infections (STI) clinics in ...the Netherlands were followed until linkage to care. Data were collected at the time of diagnosis and at first consultation in care, including demographics, behavioural information, CD4+ counts and HIV viral load (VL) measurements. Delayed linkage to care was defined as >4 weeks between HIV diagnosis and first consultation.
310 participants were included; the majority (90%) being men who have sex with men (MSM). For 259 participants (84%), a date of first consultation in care was known; median time to linkage was 9 days (range 0-435). Overall, 95 (31%) of the participants were not linked within 4 weeks of diagnosis; among them, 44 were linked late, and 51 were not linked at all by the end of study follow-up. Being young (<25 years), having non-Western ethnicity or lacking health insurance were independently associated with delayed linkage to care as well as being referred to care indirectly. Baseline CD4+ count, VL, perceived social support and stigma at diagnosis were not associated with delayed linkage. Risk behaviour and CD4+ counts declined between diagnosis and linkage to care.
Although most newly diagnosed patients with HIV were linked to care within 4 weeks, delay was observed for one-third, with over half of them not yet linked at the end of follow-up. Vulnerable subpopulations (young, uninsured, ethnic minority) were at risk for delayed linkage. Testing those at risk is not sufficient, timely linkage to care needs to be better assured as well.
Concurrent genital-anal human papillomavirus (HPV) infections may impose an increased anal cancer risk in women with HPV-related genital lesions. High viral load may facilitate genital-anal HPV ...concurrence. Genital and anal HPV is reduced by a bivalent HPV16/18 vaccine, yet the effect on concurrent genital-anal HPV remains unclear.
This study analyzed viral load in concurrent genital-anal HPV infections, relative to genital-only and anal-only HPV infections and the impact of vaccination in young women. We included 1074 women, who provided both genital and anal swabs. HPV detection and genotyping was performed using the SPF10-DEIA-LiPA25. HPV copy numbers were measured with type-specific qPCRs and corrected for cellular content to obtain the viral load.
Concurrent genital-anal HPV often had significantly higher genital viral load (0.09–371 c/cell) than genital-only HPV (3.17E-04-15.9 c/cell, p < 0.0001 to p < 0.05). Moreover, nearly all concurrent genital-anal HPV types had higher genital copy numbers per PCR reaction (157-416E04 c/rxn) than anal copy numbers (0.90–884E01 c/rxn, p < 0.0001 to p < 0.001). Vaccinated women had significantly less infections with HPV16/18 vaccine-types (2.8% vs 13.7%, p < 0.0001) and HPV31/35/45 cross-protective types (7.4% vs 21.1%, p < 0.0001) than unvaccinated women.
In conclusion, particularly high genital viral load is found in concurrent genital-anal HPV infections, which are effectively reduced by vaccination.
•Concurrent genital-anal HPV infections may impose a higher risk of anal cancer.•These infections have increased genital viral load.•The genital site is likely the main source of a concurrent genital-anal HPV infection.•Vaccination effectively reduces concurrent genital-anal HPV infections.
Abstract Introduction Home-based self-collected dried blood spot (DBS) sampling could simplify sexual health and pre-exposure prophylaxis (PrEP) care and reduce sexually transmitted infections (STI) ...clinic visits for men who have sex with men (MSM). We compared the performance of DBS to venipuncture collected blood samples to test four STIs and creatinine concentration. Methods We invited MSM clients of the Amsterdam STI clinic to participate. Routinely collected peripheral blood was tested for syphilis treponemal antibody (CLIA), HIV (HIV Ag/Ab), HCV (antibodies), HBV (HBsAg) and creatinine concentration. Participants received a home kit for DBS sampling, a return envelope and a questionnaire to evaluate the acceptability, feasibility and usability of DBS, measured on 5-point Likert scales, 1 representing complete disagreement and 5 complete agreement. We assessed sensitivity and specificity of DBS versus peripheral blood-based testing. Results In 2020-21 we included 410 participants; 211 (51.5%) returned a completed DBS card, 117 (28.5%) returned a partially filled card and 82 (20%) did not return a card. The sensitivity for syphilis was 90.8% and the specificity 84.3%. For both HIV Ag/Ab and HBsAg the sensitivity and specificity were 100.0%. The sensitivity for HCV antibody was 80.0% and the specificity 99.2%. The DBS creatinine concentration was a mean of 5.3 μmol/L higher than in venipuncture obtained plasma. Participants’ median willingness to take a future DBS was 4 IQR 3 – 5. Discussion DBS may be an acceptable method among MSM for STI testing and creatinine follow-up during PrEP use. However collecting enough blood on DBS cards was a challenge, and sensitivities for syphilis and HCV serology were too low.
Abstract
In the Netherlands, the Sense program addresses several key elements of sexual health for young people <25 year. This program offers free consultations at the PHS concerning STI, ...contraceptives, pregnancy or sexuality. The performance of this program has not been studied yet. This mixed methods study investigates facilitators and barriers of a Sense consultation from the perspective of clients and health care professionals (HCP) and investigates the outcome of the consultation at three points in time. Semi-structured interviews were conducted after consultation among 16 clients and 6 HCP. Questionnaires were collected directly after consultation and at 3, 6 and 12 months after consultation. Two cohorts were recruited; clients with STI consultation only and clients with questions related to sexuality, contraception and pregnancy (Sense consultation, SC). Satisfaction of the consultation and applicability of the given advice was measured. In the follow up presence of STI, pregnancy, sexual problem and contraceptive use was measured. A minority of the interviewed clients were familiar with Sense, highly valued the expertise of the HCP and the open atmosphere during the consultation. Reasons for visiting Sense included expertise, more anonymity and feeling more comfortable than at the GP. The questionnaire after consultation was returned by 144 STI clients and 32 SC clients. Both type of consultation were highly valued and advice was easily applicable. The follow up cohort included 97 STI clients and 23 SC clients. Response rate of the 3- and 6 month-questionnaires was 61%. Results of the full one year follow-up are expected in September 2019. Study results provide evidence for a highly valued Sense program, by both clients and HCP. Sense is a platform to discuss STI, contraception and sexuality in an open atmosphere, though familiarity with Sense is low. A major conclusion is that an STI consultation provides the opportunity to address questions related to sexuality.
Key messages
The Sense program is highly valued by young people, and yet the program is not widely known among young people.
There is need for more publicity to the program to enable more young people to use this program and to improve the sexual health care of young Dutch people.
Since 2000 outbreaks of sexually transmitted hepatitis C Virus (HCV) infections have been reported among HIV-infected men who have sex with men (MSM). We studied the prevalence and determinants of ...HCV-infection among MSM attending a large sexually transmitted infection (STI) clinic in the Netherlands.
In 2007-2008, 3125 attendees of the STI clinic Amsterdam, including 689 MSM, participated in an anonymous biannual crosssectional survey. Participants were interviewed and screened for HIV and HCV antibodies. Additionally, all anti-HCV positive and HIV-infected individuals were tested for HCV RNA. Using phylogenetic analysis, HCV strains of the STI clinic attendees were compared with those isolated from MSM with acute HCV in 2000-2007. Determinants of HCV-infection were analysed using logistic regression.
Two of 532 (0.4%) HIV-negative MSM and 28 of 157 (17.8%) HIV-positive MSM were infected with HCV. Over the study period, HCV prevalence among HIV-infected MSM increased (14.6%-20.9%). Seven of 28 (25.0%) HIV/HCV coinfected MSM had acute HCV infection. Only five of 28 (17.9%) HIV/HCV coinfected MSM ever injected drugs (IDU). HIV-infection, IDU, fisting and gamma hydroxy butyrate (GHB)-use were significantly associated with HCV-infection. Phylogenetic analyses revealed a high degree of MSM-specific clustering.
We found a high and increasing HCV prevalence in HIV-infected MSM. Though not statistically significant, this trend, and the relatively large proportion of acute infections suggest ongoing transmission of HCV in HIV-positive MSM. Regardless of IDU, rough sexual techniques and use of recreational drugs were associated with HCV-infection; phylogenetic analysis supported sexual transmission. Targeted prevention, like raising awareness and routine testing, is needed to stop the further spread among HIV-infected MSM, and to prevent possible spillover to HIV-negative MSM.
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