Sexually transmitted infections among HIV-infected women in Thailand

COVID-19 impact on blood donor characteristics and seroprevalence of transfusion-transmitted infections in southern Thailand between 2018 and 2022

Blood safety is a critical aspect of healthcare systems worldwide involving rigorous screening, testing, and processing protocols to minimize the risk of transfusion-transmitted infections (TTIs). The present study offers a comprehensive assessment of the prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), and syphilis among blood donors in southern Thailand. It explores the consequences of the COVID-19 pandemic on the blood transfusion service, donor characteristics, and the prevalence of TTIs. A retrospective analysis of 65,511 blood donors between 2018 and 2022 was conducted at Songklanagarind Hospital, Thailand. The socio-demographic characteristics of the donors were examined using the Chi-square test to assess the relationship between TTIs serological positivity and donor characteristics. The donors were divided into pre-COVID-19 (2018-2019) and during COVID-19 (2020-2022) groups to evaluate the impacts of COVID-19. The study found that HBV had the highest overall prevalence at 243 per hundred thousand (pht), followed by syphilis (118 pht), HCV (32 pht), and HIV (31 pht) over a five-year period of study. After COVID-19, the prevalence of HBV decreased by 21.8%; HCV decreased by 2.1%; HIV increased by 36.4%; and syphilis increased by 9.2%. The socio-demographic characteristics and TTIs prevalence were significantly altered over time. This study provides insights into blood donor characteristics and TTIs prevalence in southern Thailand, highlighting the understanding of the impact of COVID-19 on the spread of TTIs.

Multidrug-resistant Neisseria gonorrhoeae infection in heterosexual men with reduced susceptibility to ceftriaxone, first report in Thailand

The global rapid emergence of azithromycin/ceftriaxone resistant Neisseria gonorrhoeae threatens current recommend azithromycin/ceftriaxone dual therapy for gonorrhea to ensure effective treatment. Here, we identified the first two N. gonorrhoeae isolates with decreased ceftriaxone susceptibility in Thailand. Among 134 N. gonorrhoeae isolates collected from Thai Red Cross Anonymous Clinic, Bangkok, two isolates (NG-083 and NG-091) from urethral swab in male heterosexual patients had reduced susceptibility to ceftriaxone (MICs of 0.125 mg/L). Both were multidrug resistant and strong biofilm producers with ceftriaxone tolerance (MBEC > 128 mg/L). NG-083 and NG-091 remained susceptible to azithromycin (MIC of 1 mg/L and 0.5 mg/L, respectively). Reduced susceptibility to ceftriaxone was associated with alterations in PBP2, PBP1, PorB, MtrR, and mtrR promoter region. NG-083 belonged to sequence type (ST) 7235 and NG-091 has new allele number of tbpB with new ST. Molecular docking revealed ceftriaxone weakly occupied the active site of mosaic XXXIV penicillin-binding protein 2 variant in both isolates. Molecular epidemiology results revealed that both isolates display similarities with isolates from UK, USA, and The Netherlands. These first two genetically related gonococcal isolates with decreased ceftriaxone susceptibility heralds the threat of treatment failure in Thailand, and importance of careful surveillance.

Gonorrhoea and chlamydia in persons with HIV: number needed to screen

OBJECTIVES

Current guidelines recommend screening sexually active persons with HIV (PWH) for Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) at least annually. Yet, screening rates in many HIV clinics remain low. In this study, we estimated the number needed to screen (NNS) to detect a NG and/or CT infection at each anatomic site among different subpopulations of PWH. NNS provides a concrete, practical measure to aid in assessing the practical impact of screening. METHODS : We included adults in care at three HIV Research Network sites in 2011-2014. Restricting to first tests within each year, annual NNS was defined as number of persons tested divided by number positive. We computed urogenital and extragenital NNS by age and risk group (women, men who have sex with women (MSW) and men who have sex with men (MSM)). RESULTS : A total of 16 864 NG/CT tests were included. Among patients aged ≤25 years, urogenital NNS was similar among women (15 (95% CI 6 to 71)), MSW (21 (95% CI 6 to 167)) and MSM (20 (95% CI 12 to 36)). Over 25, urogenital NNS increased to a greater extent for women (363 (95% CI 167 to 1000)) and MSW (160 (95% CI 100 to 333)) than MSM (46 (95% CI 38 to 56)). The increase for women versus MSM >25 remained significant (p<0.01) in multivariable analysis. Among MSM, rectal NNS was 5 (95% CI 3 to 7) and 10 (95% CI 9 to 12) for ≤25 and for >25 years and pharyngeal NNS values were 8 (95% CI 5 to 13) and 20 (95% CI 16 to 24).

CONCLUSIONS

These findings suggest the importance of regular, at least annual NG/CT screening, particularly extragenital, of HIV positive MSM of all ages. They provide some support for age-based cutoffs for women and MSW (eg, universal screening for those aged ≤25 and targeted screening for those aged >25 years).

Screening for Chlamydia trachomatis and Neisseria gonorrhoeae infection among asymptomatic men who have sex with men in Bangkok, Thailand

We report positivity rates of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infection at each anatomic site among asymptomatic men who have sex with men (MSM). We calculated the number needed to screen (NNS) to detect CT and NG infection at each anatomic site. From 2006 to 2010, we enrolled Thai MSM, age ≥ 18 years into the Bangkok MSM Cohort Study. Participants underwent physical examination and had rectal, urethral, and pharyngeal screening for CT and NG infection using nucleic acid amplification tests (NAATs). Of 1744 enrollees, 1696 (97.2%) had no symptoms of CT and NG infection. The positivity rates of CT and NG infection at any site were 14.3% (rectum, urethra, pharynx) and 6.4% (rectum, urethra), respectively. The NNS to detect rectal CT and rectal NG infections was 10 and 16, respectively (p < 0.05). For urethral infection, the NNS of CT was lower than the NNS of NG (22, 121: p < 0.05). The lowest NNS found for rectal CT infection was in HIV-infected MSM (6, 5-8). Asymptomatic CT and NG infection were common among MSM in Bangkok, Thailand and frequently detected in the rectum. In setting where screening in all specimens using NAAT is not feasible, rectal screening should be a priority.

Thai national guidelines for the prevention of mother-to-child transmission of human immunodeficiency virus 2017

BACKGROUND

Thailand has made progress in reducing perinatal HIV transmission rates to levels that meet the World Health Organization targets for so-called "elimination" (<2%) of mother-to-child transmission (MTCT).

OBJECTIVES

To highlight the Thailand National Guidelines on HIV/AIDS Treatment Prevention Working Group issued a new version of its National Prevention of MTCT guidelines in March 2017 aimed to reduce MTCT rate to <1% by 2020.

DISCUSSION OF GUIDELINES

The guidelines include recommending initiation of antepartum antiretroviral therapy (ART) containing tenofovir disoproxil fumarate (TDF) plus lamivudine (3TC)/emtricitabine (FTC) plus efavirenz regardless of CD4 cell count as soon as HIV is diagnosed for ART naïve HIV-infected pregnant women. An alternative regimen is TDF or zidovudine (AZT) plus 3TC/FTC plus lopinavir/ritonavir (LPV/r) for HIV-infected pregnant women suspected resistant to non-nucleoside reverse transcriptase inhibitors. Treatment should be started immediately irrespective of gestational age and continued after delivery for life. Raltegravir is recommended in addition to the ART regimen for HIV-infected pregnant women who present late (gestational age (GA) ≥32 weeks) or those who have a viral load (VL) >1000 copies/mL at GA ≥32 weeks. HIV-infected pregnant women who conceive while receiving ART should continue their treatment regimen during pregnancy. HIV-infected pregnant women who present in labor and are not receiving ART should receive single-dose nevirapine immediately along with oral AZT, and continue ART for life. Infants born to HIV-infected mothers are categorized as high or standard risk for MTCT. High MTCT risk is defined as an infant whose mother has a viral load (VL) > 50 copies/mL at GA > 36 weeks or has received ART <12 weeks before delivery, or has poor ART adherence. These infants should be started on AZT plus 3TC plus NVP for 6 weeks after delivery. Infants with standard MTCT risk should receive AZT for 4 weeks. Formula feeding exclusively is recommended for all HIV-exposed infants.

Implementation and assessment of a prevention with positives intervention among people living with HIV at five hospitals in Thailand

BACKGROUND

We implemented a hospital-based prevention with positives (PwP) intervention among people living with HIV (PLHIV) that included HIV transmission risk screening, short HIV prevention messages, family planning, HIV disclosure counseling, and partner HIV testing at five hospitals in Thailand. We assessed changes in sexual risk behaviors among PLHIV who received the PwP services at the hospitals.

METHODS

From January 2008-March 2009, we systematically selected a subset of PLHIV receiving care at the five hospitals to offer participation in the PwP intervention. We collected demographic, risk behavior, and laboratory data using a standardized questionnaire. We analyzed data from PLHIV who completed at least four visits, using generalized estimating equations to identify baseline participant characteristics that were associated with adopting sexual practices less likely to be associated with HIV transmission during follow-up.

RESULTS

A total of 830 PLHIV were interviewed and 756 (91.1%) completed four visits. The median age of these 756 participants was 37 years, 400 (52.9%) were women, and 475 (62.8%) had a steady partner. At baseline, 353 (74.3%) of the steady partners had been tested for HIV and 132 (37.4%) had tested negative. Among the 756 PLHIV, 427 (56.5%) reported having sex in the 3 months before enrollment and 413 (54.6%) in the 3 months before the fourth visit. The proportion reporting having vaginal or anal sex without a condom decreased from 20.8% at baseline to 5.1% at the fourth visit (p<0.001). Factors associated (p<0.05) with abstinence or 100% condom use at follow-up visits included: completing ≥ two visits, being diagnosed with HIV for longer than 3 months, and receiving HIV prevention messages from a doctor (versus a nurse or counselor).

CONCLUSION

Safe sex behaviors increased among PLHIV receiving PwP services, suggesting that expansion of hospital-based PwP services may reduce the number of new HIV infections in Thailand.

Coinfection of Sexually Transmitted Infections among HIV-Positive Individuals: Cross-Sectional Results of a Community-Based Positive Living with HIV (POLH) Study in Nepal

In Asian concentrated HIV epidemics, data on coinfection of sexually transmitted infections (STIs) among HIV-positive individuals are limited. The authors measured the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhea (NG), and syphilis, and their correlates among 319 HIV-positive individuals in Kathmandu, Nepal. The authors tested blood samples for syphilis and urine samples for CT and NG. Overall, 17 (5.3%) participants had at least 1 STI (CT: 1.3%, NG: 2.8%, and syphilis: 1.2%). Of 226 participants who had sex in past 6 months, 51.3% did not always use condoms. Older (aged 35-60 years) participants were more likely (adjusted odds ratio [AOR] = 3.83; 95% confidence interval [CI] = 1.19-12.33; P = .024) and those who were currently married (AOR = 0.30; 95% CI = 0.09-0.97; P = .046) or on antiretroviral therapy (AOR = 0.21; 95% CI = 0.06-0.71; P = .012) were less likely to have at least 1 STI. Our results suggest the need to strengthen the efforts to screen and treat STIs and to promote safer sexual practices among Nepalese HIV-positive individuals.

Clinical versus laboratory screening for sexually transmitted infections prior to insertion of intrauterine contraception among women living with HIV/AIDS: a randomized controlled trial

STUDY QUESTION

Does laboratory testing after syndromic screening for sexually transmitted infections (STIs) reduce the rate of intrauterine contraception (IUC) removal among women living with HIV/AIDS (WLHA)?

SUMMARY ANSWER

Additional laboratory testing after syndromic screening for STIs did not affect the likelihood that a woman would remove an IUC immediately or within 1 year of IUC use or the frequency of post-insertion unscheduled clinic visits. In low-risk WLHA, the incidence rate of IUC removal is low with or without laboratory testing.

WHAT IS KNOWN ALREADY

Fear of infectious morbidity remains an obstacle to uptake of IUC by WLHA. The value of laboratory testing after syndromic screening for STI before the insertion of IUC remains uncertain.

STUDY DESIGN, SIZE, DURATION

We enrolled WLHA from 2 September to 6 December 2013 and followed them up to 31 December 2014. After syndromic screening, 703 women free of STIs were randomized to either additional laboratory screening or no additional screening for STI before IUC insertion. The randomization sequence was generated by an independent statistician and randomization numbers placed in opaque sequentially numbered sealed envelopes. All women randomized had an IUC inserted and in all 672 participants completed the 1-year follow-up. The study staff who followed up the participants were blinded to the study allocation groups. Incidence rate ratios (IRRs) were used to compare the incidence rates of IUC removal, unscheduled clinic attendance and IUC continuation between the two groups.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Women eligible to participate were 18-49 years old at study entry, in a relationship with a male partner, wanted to avoid pregnancy for at least 1 year and were undergoing HIV/AIDS care at Mulago Hospital, Uganda. Participants completed a baseline questionnaire and up to four follow-up questionnaires until discontinuation of IUC, loss to follow-up or end of study observation after 12 months.

MAIN RESULTS AND THE ROLE OF CHANCE

The rate of IUC removal was 8.8% (29/331) in the no additional screening group and 8.0% (27/341) in the additional laboratory screening group [IRR 1.1 (95% CI 0.63-1.93)]. Unscheduled clinic attendances were similar in the two groups at 1 year of IUC insertion: 13.6% (45/331) in the no additional screening group and 12.3% (42/241) in the additional laboratory screening group. During the 1-year follow-up, only five women, three from the no additional screening group and two from the additional laboratory screening group, developed pelvic inflammatory disease (PID), as defined by established diagnostic criteria.

LIMITATIONS, REASONS FOR CAUTION

We were not able to carry out STI risk assessment directly from the men thus women with high-risk partners could have been included in the study and this may be responsible for the lack of a demonstrable effect of additional laboratory screening on incidence rates of IUC removals and unscheduled clinic attendance. The diagnosis of PID was based on clinical signs and symptoms; therefore, subclinical PID could have been missed.

WIDER IMPLICATIONS OF THE FINDINGS

Among WLHA, the incidence rate of IUC removal is low and IUC continuation high. Syndromic screening for STIs could be sufficient in indentifying WLHA who are suitable for IUC use. However, our findings are only generalizable to women in HIV/AIDS care who have access to good follow-up.

STUDY FUNDING/COMPETING INTERESTS

The study was supported by Medical Education for Equitable Services to all Ugandans, a Medical Education Partnership Initiative grant number 5R24TW008886 from the office of Global AIDS Coordinator and the US Department of Health and Human Services, Health Resources and Services Administration and National Institutes of Health. Additional funding was from the Swedish International Development Agency, Swedish Research Council (SIDA/VR). The authors have no competing interests to declare.

TRIAL REGISTRATION NUMBER

This trial was registered at Pan African Clinical Trial, Registry. PACTR 201308000561212.

The rising trend of sexually transmitted infections among HIV-infected persons: a population-based cohort study in Taiwan, 2000 through 2010

OBJECTIVE

Positive prevention interventions for patients living with the HIV include the early detection and treatment of sexually transmitted infections (STIs). This study aimed to determine the incidence of selected STIs, including syphilis, genital warts, gonorrhea, chlamydial infection, and trichomoniasis, in a population-based cohort of individuals living with HIV.

METHODS

Clinical data from 2000 to 2010 were obtained from the Taiwan National Health Insurance Research Database identified 15,123 patients with HIV infection. The incidence rates were standardized by age and sex using the direct method that was based on the 2000 World Health Organization world standard population.

RESULTS

The overall rate ratio of STI episodes significantly increased [rate ratio: 34.0, 95% confidence interval (CI): 24.3 to 47.6, P < 0.01]. After an HIV diagnosis, 15.9% of patients with HIV had at least 1 of these 5 STIs. An incidence rate of 503.0 STI episodes/10,000 person-years (PYs) (95% CI: 487.1 to 519.5) was detected during the 11-year follow-up period. The most common STIs after an HIV diagnosis were syphilis (381.9 episodes/10,000 PYs; 95% CI: 368.0 to 396.3), followed by genital warts (138.9 episodes/10,000 PYs; 95% CI: 130.6 to 147.6). The incidence of STIs varied significantly according to gender. In women, the annual incidence of STIs remained stable. However, the annual incidence of syphilis, genital warts, and chlamydial infection increased in young men.

CONCLUSIONS

An increase in STIs among HIV-positive persons highlights the need to identify the causal factors of these co-infections. Routine STI screenings and early preventive interventions against STIs in HIV-infected persons are crucial.

Prevalence and factors associated with sexually transmitted infections among HIV positive women opting for intrauterine contraception

Background

Women living with HIV/AIDS (WLHA) are a high risk group for sexually transmitted infections (STIs). However, the majority of women with STIs are asymptomatic. Data on prevalence of STIs among WLHA in Uganda are limited. The objective of the study was to determine prevalence and factors associated with STIs among WLHA opting for intrauterine contraceptive device (IUD).

Methods

Three hundred fifty one WLHA deemed free of STIs using a syndromic logarithm were enrolled into the study. Endo-cervical swabs were taken before IUD insertion and PCR test for Nisseria gonorrhea (NG), Trichomonas vaginalis (TV) and Chlamydia trachomatis (CT) infections conducted.

Results

Participants’ mean age was 29.4 ± 6.2 years, 83% were under 35years, 50% had secondary education and 73% were married. The majority (69%) had disclosed their HIV sero status to their spouses, 82% used Cotrimoxazole prophylaxis, 70% were on antiretroviral therapy, 90% had CD4 count greater than 350, about 60% reported condoms use and 70% were of parity 2-4. Over 50% of the participants’ spouses were older than 35 years and 72% had attained secondary education. STIs prevalence was 11.1%, (95% CI 7.8-14.4) and individual prevalence for TV, NG, and CT was 5.9%, 5.4% and 0.9% respectively. Factors independently associated with STI were having primary or less education (OR= 2.3, 95% CI: 1.09 - 4.85) having a spouse of primary or less education (OR= 3.3, 95% CI: 1.6 - 6.78) and muslim faith (OR= 0.2, 95% CI: 0.04 - 0.78).

Conclusion

STI prevalence was 11.1%. TV and NG were the commonest STIs in this population. Having primary or less education for both participant and spouse was associated with increased risk while being of muslim faith was associated with reduced risk of STI.