Bronwyn Silver

Trichomonas vaginalis as a cause of perinatal morbidity: a systematic review and meta-analysis.

Abstract Trichomonas vaginalis is the most common curable sexually transmissible infection worldwide, with high rates in women of reproductive age. There have been inconsistent findings about the impact of infection and its treatment in pregnancy. We conducted a meta-analysis to determine the association between T. vaginalis and perinatal outcomes. Electronic databases were searched to May 2013. Included studies reported perinatal outcomes in women infected and uninfected with T. vaginalis. Meta-analysis calculated a pooled relative risk (RR) and 95% confidence interval (CI) using either a fixed- or random-effects model. Study bias was assessed using funnel plots. Of 178 articles identified, 11 studies met the inclusion criteria. The study populations, outcomes, and quality varied. T. vaginalis in pregnancy was associated with an increased risk of preterm birth (RR, 1.42; 95% CI, 1.15–1.75; 9 studies; n = 81,101; I2 = 62.7%), preterm premature rupture of membranes (RR, 1.41; 95% CI,1.10–1.82; 2 studies; n = 14,843; I2 = 0.0%) and small for gestational age infants (RR, 1.51; 95% CI,1.32–1.73; 2 studies; n = 14,843; I2 = 0.0%). Sensitivity analyses of studies that accounted for coinfection with other sexually transmissible infection found a slightly reduced RR of 1.34 for preterm birth (95% CI, 1.19–1.51; 6 studies; n = 72,077; I2 = 11.2%), and in studies where no treatment was confirmed, the RR was 1.83 (95% CI, 0.98–3.41; 3 studies; n = 1795; I2 = 22.3%). Our review provides strong evidence that T. vaginalis in pregnancy is associated with an increased risk of preterm birth. Based on fewer studies, there were also substantial increases in the risk of preterm premature rupture of membranes and small for gestational age infants. Further studies that address the current gaps in evidence on treatment effects in pregnancy are needed.

Coinfection with Chlamydia trachomatis, Neisseria gonorrhoeae and Trichomonas vaginalis: a cross-sectional analysis of positivity and risk factors in remote Australian Aboriginal communities

Objectives To determine the co-occurrence and epidemiological relationships of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) in a high-prevalence setting in Australia. Methods In the context of a cluster randomised trial in 68 remote Aboriginal communities, we obtained laboratory reports on simultaneous testing for CT, NG and TV by nucleic acid amplification tests in individuals aged ≥16 years and examined relationships between age and sex and the coinfection positivity. ORs were used to determine which infections were more likely to co-occur by demographic category. Results Of 13 480 patients (median age: 30 years; men: 37%) tested for all three infections during the study period, 33.3% of women and 21.3% of men had at least one of them, highest in patients aged 16–19 years (48.9% in women, 33.4% in men). The most frequent combination was CT/NG (2.0% of women, 4.1% of men), and 1.8% of women and 0.5% of men had all three. In all co-combinations, coinfection positivity was highest in patients aged 16–19 years. CT and NG were highly predictive of each others presence, and TV was associated with each of the other two infections, but much more so with NG than CT, and its associations were much stronger in women than in men. Conclusions In this remote high-prevalence area, nearly half the patients aged 16–19 years had one or more sexually transmitted infections. CT and NG were more common dual infections. TV was more strongly associated with NG coinfections than with CT. These findings confirm the need for increased simultaneous screening for CT, NG and TV, and enhanced control strategies. Trial registration Australian and New Zealand Clinical Trials Registry ACTRN12610000358044.

Incidence of curable sexually transmissible infections among adolescents and young adults in remote Australian Aboriginal communities: analysis of longitudinal clinical service data

Objectives To undertake the first comprehensive analysis of the incidence of three curable sexually transmissible infections (STIs) within remote Australian Aboriginal populations and provide a basis for developing new control initiatives. Methods We obtained all results for Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) testing conducted during 2009–2011 in individuals aged ≥16 years attending 65 primary health services across central and northern Australia. Baseline prevalence and incidence of all three infections was calculated by sex and age group. Results A total of 17 849 individuals were tested over 35 months. Baseline prevalence was 11.1%, 9.5% and 17.6% for CT, NG and TV, respectively. During the study period, 7171, 7439 and 4946 initially negative individuals had a repeat test for CT, NG and TV, respectively; these were followed for 6852, 6981 and 6621 person-years and 651 CT, 609 NG and 486 TV incident cases were detected. Incidence of all three STIs was highest in 16-year-olds to 19-year-olds compared with 35+ year olds (incident rate ratio: CT 10.9; NG 11.9; TV 2.5). In the youngest age group there were 23.4 new CT infections per 100 person-years for men and 29.2 for women; and 26.1 and 23.4 new NG infections per 100 person-years in men and women, respectively. TV incidence in this age group for women was also high, at 19.8 per 100 person-years but was much lower in men at 3.6 per 100 person-years. Conclusions This study, the largest ever reported on the age and sex specific incidence of any one of these three curable infections, has identified extremely high rates of new infection in young people. Sexual health is a priority for remote communities, but will clearly need new approaches, at least intensification of existing approaches, if a reduction in rates is to be achieved.

Barriers and facilitators of sexually transmissible infection testing in remote Australian Aboriginal communities: results from the Sexually Transmitted Infections in Remote Communities, Improved and Enhanced Primary Health Care (STRIVE) Study.

UNLABELLED Background Remote Australian Aboriginal communities experience high rates of bacterial sexually transmissible infections (STI). A key strategy to reduce STIs is to increase testing in primary health care centres. The current study aimed to explore barriers to offering and conducting STI testing in this setting. METHODS A qualitative study was undertaken as part of the STI in Remote communities, Improved and Enhanced Primary Health Care (STRIVE) project; a large cluster randomised controlled trial of a sexual health quality improvement program. We conducted 36 in-depth interviews in 22 participating health centres across four regions in northern and central Australia. RESULTS Participants identified barriers including Aboriginal cultural norms that require the separation of genders and traditional kinship systems that prevent some staff and patients from interacting, both of which were exacerbated by a lack of male staff. Other common barriers were concerns about client confidentiality (lack of private consulting space and living in small communities), staff capacity to offer testing impacted by the competing demands for staff time, and high staff turnover resulting in poor understanding of clinic systems. Many participants also expressed concerns about managing positive test results. To address some of these barriers, participants revealed informal strategies, such as team work, testing outside the clinic and using adult health checks. CONCLUSIONS Results identify cultural, structural and health system issues as barriers to offering STI testing in remote communities, some of which were overcome through the creativity and enthusiasm of individuals rather than formal systems. Many of these barriers can be readily addressed through strengthening existing systems of cultural and clinical orientation and educating staff to view STI in a population health framework. However others, particularly issues in relation to culture, kinship ties and living in small communities, may require testing modalities that do not rely on direct contact with health staff or the clinic environment.

Improving Adherence to Guidelines for the Diagnosis and Management of Pelvic Inflammatory Disease: A Systematic Review

Background. Evidence suggests adherence to clinical guidelines for pelvic inflammatory disease (PID) diagnosis and management is suboptimal. We systematically reviewed the literature for studies describing strategies to improve the adherence to PID clinical guidelines. Methods. The databases MEDLINE and EMBASE, and reference lists of review articles were searched from January 2000 to April 2012. Only studies with a control group were included. Results. An interrupted time-series study and two randomised controlled trials (RCTs) were included. The interrupted time-series found that following a multifaceted patient and practitioner intervention (practice protocol, provision of antibiotics on-site, written instructions for patients, and active followup), more patients received the recommended antibiotics and attended for followup. One RCT found a patient video on PID self-care did not improve medication compliance and followup. Another RCT found an abbreviated PID treatment guideline for health-practitioners improved their management of PID in hypothetical case scenarios but not their diagnosis of PID. Conclusion. There is limited research on what strategies can improve practitioner and patient adherence to PID diagnosis and management guidelines. Interventions that make managing PID more convenient, such as summary guidelines and provision of treatment on-site, appear to lead to better adherence but further empirical evidence is necessary.

Frequent occurrence of undiagnosed pelvic inflammatory disease in remote communities of central Australia.

Objective: To assess the extent of diagnosed and undiagnosed pelvic inflammatory disease (PID) in Aboriginal women in remote central Australia.

Reasons for delays in treatment of bacterial sexually transmissible infections in remote Aboriginal communities in Australia: a qualitative study of healthcentre staff

UNLABELLED Background Remote Aboriginal communities in Australia experience high rates of bacterial sexually transmissible infections (STIs). To control the transmission and decrease the risk of complications, frequent STI testing combined with timely treatment is required, yet significant delays in treatment have been reported. Perceived barriers to timely treatment for asymptomatic patients in remote communities were explored. METHODS A qualitative study was undertaken as part of the STRIVE (STIs in Remote communities, ImproVed and Enhanced primary health care) project; a cluster randomised controlled trial of a sexual health quality improvement program. During 2012, we conducted 36 in-depth interviews with staff in 22 clinics in remote Australia. RESULTS Participants included registered nurses (72%) and Aboriginal health practitioners (28%). A key barrier to timely treatment was infrequent transportation of specimens to laboratories often hundreds of kilometres away from clinics. Within clinics, there were delays checking and actioning test results, and under-utilisation of systems to recall patients. Participants also described difficulties in physically locating patients due to: (i) high mobility between communities; and (ii) low levels of community knowledge created by high staff turnover. Participants also suggested strategies to overcome some barriers such as dedicated clinical time to follow-up recalls and taking treatment out to patients. CONCLUSIONS Participants identified barriers to timely STI treatment in remote Aboriginal communities, and systems to address some of the barriers. Innovative strategies such as point-of-care testing or increased support for actioning results, coupled with incentives to individual patients to attend for results, may also assist in decreasing the time to treatment.

Patient, staffing and health centre factors associated with annual testing for sexually transmissible infections in remote primary health centres

BACKGROUND In high-incidence Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) settings, annual re-testing is an important public health strategy. Using baseline laboratory data (2009-10) from a cluster randomised trial in 67 remote Aboriginal communities, the extent of re-testing was determined, along with the associated patient, staffing and health centre factors. METHODS Annual testing was defined as re-testing in 9-15 months (guideline recommendation) and a broader time period of 5-15 months following an initial negative CT/NG test. Random effects logistic regression was used to determine factors associated with re-testing. RESULTS Of 10559 individuals aged ≥16 years with an initial negative CT/NG test (median age=25 years), 20.3% had a re-test in 9-15 months (23.6% females vs 15.4% males, P<0.001) and 35.2% in 5-15 months (40.9% females vs 26.5% males, P<0.001). Factors independently associated with re-testing in 9-15 months in both males and females were: younger age (16-19, 20-24 years); and attending a centre that sees predominantly (>90%) Aboriginal people. Additional factors independently associated with re-testing for females were: being aged 25-29 years, attending a centre that used electronic medical records, and for males, attending a health centre that employed Aboriginal health workers and more male staff. CONCLUSIONS Approximately 20% of people were re-tested within 9-15 months. Re-testing was more common in younger individuals. Findings highlight the importance of recall systems, Aboriginal health workers and male staff to facilitate annual re-testing. Further initiatives may be needed to increase re-testing.

Community and clinic-based screening for curable sexually transmissible infections in a high prevalence setting in Australia: a retrospective longitudinal analysis of clinical service data from 2006 to 2009

UNLABELLED Background In response to the high prevalence of sexually transmissible infections (STIs) in many central Australian Aboriginal communities, a community-wide screening program was implemented to supplement routine primary health care (PHC) clinic testing. The uptake and outcomes of these two approaches were compared. METHODS Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) community and clinic screening data for Aboriginal people aged 15-34 years, 2006-2009, were used. Regression analyses assessed predictors of the first test occurring in the community screen, positivity and repeat testing. RESULTS A total of 2792 individuals had 9402 tests (median: four per person) over 4 years. Approximately half of the individuals (54%) were tested in the community and clinic approaches combined, 29% (n=806) in the community screen only and 18% (n=490) in the clinic only. Having the first test in a community screen was associated with being male and being aged 15-19 years. There was no difference between community and clinic approaches in CT or NG positivity at first test. More than half (55%) of individuals had a repeat test within 2-15 months and of these, 52% accessed different approaches at each test. The only independent predictor of repeat testing was being 15-19 years. CONCLUSIONS STI screening is an important PHC activity and the findings highlight the need for further support for clinics to reach young people. The community screen approach was shown to be a useful complementary approach; however, cost and sustainability need to be considered.

High chlamydia and gonorrhoea repeat positivity in remote Aboriginal communities 2009–2011: longitudinal analysis of testing for re-infection at 3 months suggests the need for more frequent screening

Background Extremely high rates of diagnosis of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) have been recorded in remote communities across northern and central Australia. Re-testing at 3 months, after treatment administered, of CT or NG is recommended to detect repeat infections and prevent morbidity and ongoing transmission. METHODS Baseline CT and NG laboratory data (2009-2010) from 65 remote health services participating in a cluster randomised trial was used to calculate the proportion of individuals re-tested after an initial CT or NG diagnosis at <2 months (not recommended), 2-4 months (recommended) and 5-12 months and the proportion with repeat positivity on re-test. To assess if there were difference in re-testing and repeat positivity by age group and sex, t-tests were used. RESULTS There was a total of 2054 people diagnosed with CT and/or NG in the study period; 14.9% were re-tested at 2-4 months, 26.9% at 5-12 months, a total of 41.8% overall. Re-testing was higher in females than in males in both the 2-4-month (16.9% v. 11.5%, P<0.01) and 5-12-month (28.9% v. 23.5%, P=0.01) periods. Women aged 25-29 years had a significantly higher level of re-testing 5-12 months post-diagnosis than females aged 16-19 years (39.8% v. 25.4%, P<0.01). There was a total of 858 people re-tested at 2-12 months and repeat positivity was 26.7%. There was higher repeat NG positivity than repeat CT positivity (28.8% v. 18.1%, P<0.01). CONCLUSIONS Just under half the individuals diagnosed with CT or NG were re-tested at 2-12 months post-diagnosis; however, only 15% were re-tested in the recommended time period of 2-4 months. The higher NG repeat positivity compared with CT is important, as repeat NG infections have been associated with higher risk of pelvic inflammatory disease-related hospitalisation. Findings have implications for clinical practice in remote community settings and will inform ongoing sexual health quality improvement programs in remote community clinics.