Article Text

HIV testing in termination of pregnancy and colposcopy services: a scoping review
  1. Paraskevas Filippidis1,2,
  2. Katyuska Francini3,
  3. Martine Jacot-Guillarmod3,
  4. Patrice Mathevet3,
  5. Loïc Lhopitallier1,2,
  6. Matthias Cavassini1,2,
  7. Katharine E.A. Darling1,2
  1. 1 Service of Infectious Diseases, Lausanne University Hospital, Lausanne, Switzerland
  2. 2 Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
  3. 3 Service of Gynaecology and Obstetrics, Lausanne University Hospital, Lausanne, Switzerland
  1. Correspondence to Dr Katharine E.A. Darling, Service of Infectious Diseases, CHUV, Lausanne, Vaud, Switzerland; Katharine.Darling{at}


Background Women and girls are relatively under-represented across the HIV treatment cascade. Two conditions unique to women, pregnancy and cervical cancer/dysplasia, share a common acquisition mode with HIV. This scoping review aimed to explore HIV testing practices in voluntary termination of pregnancy (TOP) and colposcopy services.

Methods The scoping review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. We searched articles published up to 20 December 2020 using three electronic databases (PubMed/Medline, Embase, Google Scholar) and including the keywords “HIV Testing”, “Abortion, Induced”, “Colposcopy”, “HIV screen*” and “termination of pregnancy”.

Results A total of 1496 articles were identified, of which 55 met the inclusion criteria. We included studies providing background HIV prevalence in addition to prevalence in the study population and studies of women seeking TOP rather than presenting with TOP complications. This limited our review to high-income, low HIV prevalence settings. We observed two study phases: studies pre-antiretroviral therapy (ART) using unlinked anonymous testing data and examining HIV risk factors associated with positive HIV tests and studies post-ART using routine testing data and exploring HIV testing uptake. HIV prevalence was estimated at >0.2% in most TOP settings and >1% (range 1.7%–11.4%) in colposcopy services. Many TOP providers did not have local HIV testing policies and HIV testing was not mentioned in many specialist guidelines. Testing uptake was 49%–96% in TOP and 23%–75% in colposcopy services.

Conclusion Given the estimated HIV prevalence of >0.1% among women attending TOP and colposcopy services, HIV testing would be economically feasible to perform in high-income settings. Explicit testing policies are frequently lacking in these two settings, both at the local level and in specialist guidelines. Offering HIV testing regardless of risk factors could normalise testing, reduce late HIV presentation and create an opportunity for preventive counselling.

  • HIV
  • colposcopy
  • abortion
  • habitual
  • pregnancy
  • diagnostic screening programmes

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In the past four decades, thanks to antiretroviral therapy (ART), HIV infection has shifted from being a fatal disease to a chronic condition with an excellent life expectancy.1 Over this period, the epidemiology of people living with HIV (PWH) has changed. Globally, women and girls now make up over half of the 38 million PWH.2

Despite the growing number of women with HIV (WWH), women and girls are relatively under-represented across the HIV treatment cascade.3 In Switzerland, women are more likely to be diagnosed as late presenters (having <350 CD4 cells/mL or an AIDS-defining condition at HIV diagnosis), suggesting insufficient access to testing or inadequate testing policies.4 Among people aged 35–44 years old with new HIV diagnoses in Switzerland in 2019, over a third were heterosexual women.5 Two frequently encountered conditions unique to women, pregnancy and cervical cancer/dysplasia, share a common acquisition mode with HIV. It is surprising therefore that, while numerous studies have examined these two conditions among WWH,6 7 there is scant information on HIV detection or prevention measures among women of negative or unknown HIV status.

HIV testing is the only means of diagnosing PWH who are unaware of their HIV status, enabling treatment and prevention of onward transmission. Current HIV testing recommendations differ in the degree to which pregnancy and cervical pathology are mentioned. In the UK, the British HIV Association (BHIVA) has explicitly recommended HIV testing of all pregnant women since 2008, whether they present for antenatal care (ANC) or voluntary termination of pregnancy (TOP).8 The National Institute for Health and Care Excellence endorsed testing in TOP in 2011 (online supplemental table 1). The guidelines of the British Royal College of Obstetricians and Gynaecologists delegate HIV testing protocols to local care providers.9 The Swiss Federal Office of Public Health HIV testing recommendations advise testing of pregnant women but make no explicit mention of TOP (online supplemental table 1). Cervical dysplasia has been identified as an HIV indicator condition and yet few specialist (gynaecology or gynaecological oncology) guidelines recommend HIV testing.10 11

Supplemental material

Table 1

HIV prevalence among women attending termination of pregnancy (TOP) services

For some reproductive-age women, particularly those in vulnerable groups, TOP and colposcopy visits may be their first, if not their only, interaction with a healthcare system.12 The aim of this scoping review was therefore to explore HIV testing practices in voluntary TOP and colposcopy services, examining HIV prevalence, HIV testing policies and testing uptake in these two settings.



Scoping reviews aim to map the key concepts within a specific research area by collating literature from related disciplines. This scoping review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews13 (online supplemental material 2). We performed a search of published studies and conference abstracts using three electronic databases (PubMed/Medline, Embase, Google Scholar). Our keywords included the medical subject heading (MeSH) terms “HIV Testing”, “Abortion, Induced” and “Colposcopy”, and the free terms “HIV screen*”, “HIV test*”, “HIV opt in”, “HIV opt out”, “termination of pregnancy”, “post abortion”, “colposcopy service”, “HPV service” or similar non-MeSH terms. The search ran from 23 November to 20 December 2020.

Supplemental material

Articles were eligible for inclusion if they were published in English or French, regardless of geography, and presented (1) HIV prevalence, (2) HIV testing strategies, (3) HIV testing offer, (4) HIV testing uptake, (5) barriers to HIV testing or (6) other relevant information related to HIV testing in TOP and colposcopy services. Articles were screened initially by title with a bias towards inclusion and then evaluated by abstract. The main text of retained articles was reviewed. When multiple articles referred to the same study population, we included either the most comprehensive or the original article published. Reference lists were examined for relevant articles not identified in the original search.


Publication year and type, study period, number of participants, geographical location, study objective, and contribution to the scoping review were extracted from included articles and tabulated separately for TOP and colposcopy services. HIV prevalence and testing offer/uptake rates were expressed as percentages. We did not appraise the methodological quality or risk of bias of included articles, consistent with guidance on scoping review conduct.14 All authors contributed to the discussion of the scoping review and to the bibliographic search.


Diagnostic HIV testing refers to testing based on clinical signs or symptoms believed to be due to HIV infection. Targeted HIV screening refers to the selection of patients for testing who are believed to be at risk of infection. Non-targeted HIV screening refers to the selection of patients for testing without respect to risk. The terms ‘opt-in’ and ‘opt-out’ refer to the default assumption of patient willingness to undergo testing: not testing unless the patient agrees and testing unless the patient declines, respectively. For studies not using these terms, HIV testing offered to all patients attending a specific service (TOP, ANC or colposcopy) is referred to as routine testing. The term ‘opt-out’ is used in table 1 (routine HIV testing in TOP) and when describing HIV testing policy. We found no instances of opt-out testing in colposcopy settings.


Of 1496 articles identified through database searches and reference tracing, 949 articles were screened after removing duplicates. Fifty-five articles were selected as potentially relevant based on titles and abstracts, comprising articles and letters published in peer-reviewed journals and abstracts presented at specialist conferences. Twenty-five articles were excluded (related to existing articles or examining populations out with the scope of this review), leaving 30 articles for analysis (figure 1). Of the 25 articles rejected, 10 (conducted in South America, Africa and Asia) reported high HIV prevalence without always providing the HIV prevalence in the local population. Some of these studies were conducted among women presenting with TOP complications rather than presenting for voluntary TOP. As these studies varied widely in terms of geography and healthcare setting (urban vs rural), we excluded them in order to focus on studies that were comparable between populations and over time. The retained studies were conducted in high-income, lower HIV prevalence settings in Europe and North America. Among these, we included nine unlinked anonymous testing (UAT) studies and five routine testing studies (table 1). Finally, although we searched the terms ‘termination of pregnancy’ and ‘abortion’, we use the former term in our review in keeping with the position statement of the British Royal College of Nursing.15

Figure 1

PRISMA flow diagram of the article selection process (created by the authors). PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.

TOP services

We observed two phases of TOP studies: a first phase from the early 1990s to the early 2000s, presenting data from UAT studies, taking blood samples drawn for other purposes after they had been permanently stripped of identifying information,16 and a second phase from the early 2000s onwards, presenting data from routine testing (table 1).

HIV prevalence

While HIV prevalence in TOP services will be influenced by that in the general population, several studies reported higher prevalence in women seeking TOP than those in ANC. In France in 1990–1991, a UAT study of 11 593 blood samples from Paris and surrounding districts taken at the end of pregnancy reported that HIV prevalence among women seeking TOP was over twice that among women in ANC (0.7% vs 0.28%; relative risk: 2.54, 95% CI 1.36 to 4.75, p<0.05).17 A similar ratio was reported in Southeast France during the same period: 0.56% in TOP vs 0.22% among women in ANC.18 In Italy, in 1989–1994, HIV prevalence was 0.49% in TOP vs 0.18% among women in ANC (OR: 2.72, 95% CI 2.29 to 3.22).19 A later study in Catalonia, conducted between 1999 and 2006, found no significant difference in HIV prevalence between women seeking TOP (0.13%) and those in ANC (0.18%) (p=0.06), but rates of tests offered and performed were lower in TOP than in ANC.20 In the UK, HIV prevalence among women seeking TOP in Dundee in 1988–1990 was 0.85% compared with 0.13% of women in ANC (p<0.001).21 In London, HIV prevalence in TOP services was over double that among women in ANC and increased with time up to 1.01% in 2005.22 In North America, HIV prevalence from UAT studies in TOP ranged from 0.18% to 0.55% during two different time periods (1989–1993 and 2002–2003).23 24

Most studies examining HIV prevalence in TOP services from routine testing were conducted at London teaching hospitals and North America. Overall HIV prevalence was estimated to be 0.56%–0.82%25–27; the prevalence of new HIV infections was 0.3%–0.52%.26 28 As with UAT studies, one routine testing study reported higher prevalence in TOP versus ANC and genitourinary medicine services (0.6% vs 0.2% and 0.5%, respectively)25 (table 1).

Testing policy, offer and uptake

In the UK in 2013, 5 years after the 2008 BHIVA testing guidelines,8 only 38% of TOP services had an HIV testing policy.29 In terms of testing practice, 41% of TOP services stated that HIV testing was offered to all women and 18% stated testing was offered to selected women29 (table 2). In Scotland in 2015, 59% of TOP services had an existing HIV testing policy or one in development, the policy being opt-out testing in 70% of cases.30 In centres with HIV testing policies, perceived barriers to testing included lack of time or staff resources, insufficient training of clinical staff and patient knowledge.30 In centres within London, uptake of HIV testing offered varied from 49% to 96.4%25–27 31 32 (table 3). The most frequent reason for women declining testing was having recently been tested.32

Table 2

HIV testing performed among women attending termination of pregnancy (TOP) services

Table 3

HIV testing uptake among women attending termination of pregnancy services

One study examined differences in HIV testing rates between women seeking TOP and those in ANC. In Southeast France in 1992, 61.7% of 2825 women in ANC reported being tested during their pregnancy compared with 24.1% of 764 women seeking TOP (p<0.001).33 Women seeking TOP also reported less prior testing (45.8% vs 58.8%, p<0.001). The two groups of women were similar in terms of the low refusal rate of testing offered (<2% in both groups) and of knowledge about HIV transmission, but risky behaviours were more frequent among women seeking TOP (38.9% vs 17.7%, p<0.001).33

HIV prevalence over time in TOP services (UAT data)

In Dundee, Scotland, a decrease in HIV prevalence was described among women seeking TOP from 1988–1990 to 1993–1997, from 0.85% to 0.15% (p<0.05), related to community interventions among people who inject drugs.34 In London, HIV prevalence at sentinel TOP clinics increased from 0.64% to 1.01% between 1996 and 2005.22 In Catalonia, HIV prevalence decreased in TOP services from 0.23% to 0.1% between 1999 and 2006, although increased among women born outside Spain (from 0.22% to 0.3%).20 In Montreal, Canada, overall HIV prevalence among 12 017 women attending a TOP service between 1989 and 1993 was 0.18% (95% CI 0.11% to 0.28%) and did not vary significantly by study year. However, HIV prevalence was 147 times higher among women born in Haiti than among those born in Canada (0.016% vs 2.35%, p<0.0001).23

TOP history among WWH and missed opportunities for earlier HIV diagnosis

Several studies described the proportion of WWH who reported TOP occurring prior to their HIV diagnosis. Among 463 WWH enrolled in the European Study on the Natural History of HIV Infection in Women (including participants since 1993), who had been at risk of pregnancy in the 4 years before their HIV diagnosis, 115 reported 179 pregnancies, of which 75 (42%) had been terminated.6 Among 161 women enrolled in the cohort in the Spanish AIDS Research Network between 2011 and 2012, 29.3% reported TOP prior to HIV diagnosis.35 In an Italian multicentre study conducted among 585 WWH between 2010 and 2011, 57.9% reported TOP prior to HIV diagnosis.36

Regarding missed opportunities, a British case notes review of 60 women diagnosed with HIV between 2006 and 2009 reported that HIV testing at the time of TOP may have resulted in earlier HIV diagnosis in 5% of cases.37 In Lausanne, Switzerland, among 75 women newly diagnosed with HIV between 2011 and 2015, 34 had presented at least one missed opportunity for earlier HIV diagnosis, of whom 5 (14.7%) had not been tested when seeking TOP (Lhopitallier L, personal communication, 2021).38

Colposcopy services

We observed fewer studies examining HIV prevalence and testing among women attending colposcopy services compared with women seeking TOP (table 4).

Table 4

HIV prevalence among women attending colposcopy services

HIV prevalence

In North America, HIV prevalence in women attending colposcopy services with any grade of dysplasia ranged from 6% to 11.4% between 1988 and 1991.39–41 Among women accepting HIV testing, the prevalence of new HIV infections ranged from 3.3% to 6.1%41 42 (table 4).

The first report we identified on HIV prevalence in colposcopy services was a letter by Maiman et al 40 published in 1988: UAT of 66 women attending a colposcopy clinic at a public hospital in New York demonstrated an HIV prevalence of 10.6%. This prevalence compared with 2.0% in the hospital’s ANC and 3.0% at a sexual health clinic in Baltimore.40

Subsequent studies can broadly be grouped into those published pre-ART, which provide evidence that cervical dysplasia is a marker of HIV infection, and those published post-ART, which focus on HIV testing offer and uptake. In the pre-ART era in New York (1991), Dottino et al 39 offered screening for chlamydia, gonorrhoea, syphilis and HIV over a 4-month period to 116 primarily black and Hispanic women with condyloma (21%) or abnormal Papanicolaou (Pap) smears (79%) and identified 7 WWH (6.4%), of whom 3 had cervical intraepithelial neoplasia (CIN) stage 1–3. During the same time period, Spitzer et al 41 offered testing to 140 women attending colposcopy services for condyloma or CIN and identified 8 women with undiagnosed HIV (6.1%), of whom 6 had no definable HIV risk factors; comparable HIV prevalence in the ANC population from UAT data was 1.6%. Among the WWH, 68.8% had low-grade squamous intraepithelial lesions (SIL); the others had high-grade lesions.41 Between 1990 and 1994, Jennings et al 42 offered HIV testing to 1908 women referred to colposcopy services for abnormal Pap smears, 50.4% of whom accepted. Of women screened, 3.3% tested positive. The authors noted that the final histological diagnosis in WWH did not differ from women testing HIV-negative. In the post-ART era (2010–2011), studies from London teaching hospitals showed an overall prevalence of 2.2%–3% in women with cervical dysplasia of any grade43 and of 1.7% in women with high-grade SIL44 (table 4).

HIV testing

In Lausanne, Switzerland, we reported an HIV testing rate of 11% among 58 women undergoing treatment for invasive cervical carcinoma between 2002 and 2012.45 As with TOP, having recently been tested was one of the most frequent reasons for declining HIV testing in colposcopy services.43 44 Testing uptake rates are shown in table 5.

Table 5

HIV testing uptake among women attending colposcopy services

Concerning barriers to testing, a small qualitative study in Liverpool in 2015 reported that willingness and acceptance of testing among patients were high, but that service providers’ unfamiliarity with HIV testing discussions and time constraints presented significant barriers.46

Concerning missed opportunities for earlier HIV diagnosis, the British case notes review mentioned above reported at least one missed opportunity in women diagnosed with CIN ≥2 prior to HIV diagnosis.37 In Lausanne, Switzerland, among 34 WWH with at least one missed opportunity for earlier HIV diagnosis, 3 (8.8%) had undergone treatment for cervical dysplasia prior to HIV diagnosis (Lhopitallier L, personal communication, 2021).38


While TOP and colposcopy services may receive different women at different periods of their lives, this scoping review reveals parallels between the two settings. We observed two distinct article categories: those reporting epidemiological risk factors for having a positive HIV test (mostly pre-ART) and those reporting HIV testing offer and uptake rates (mostly post-ART). The former category served to justify HIV testing at a time when HIV infection held a poor prognosis. Among pregnant women, the focus of care was on fetal well-being, with higher rates of HIV tests being offered and performed in ANC compared with TOP, even if HIV prevalence was higher among women seeking TOP.17 18 21 22 25 HIV prevalence rates in TOP services were above the threshold of 0.1% for routine testing to be cost-effective in high-income settings in the era of ART47 48 (table 1). HIV prevalence in colposcopy settings was also above this threshold, and yet mention of HIV testing in specialty guidelines is lacking.

We made an active choice to include articles from the pre-ART era to provide a historical context. The language used at this time reflects how HIV medicine has evolved: women were described as ‘admitting’ to having HIV risk factors or undergoing ‘therapeutic abortion’ when diagnosed with HIV during pregnancy. While ART has changed HIV management and prognosis, HIV testing recommendations have lagged behind. The BHIVA guidelines explicitly recommend testing in both TOP and ANC. Other guidelines are more ambiguous. The European Centre for Disease Prevention and Control public health guidance on HIV, hepatitis B and hepatitis C testing recommends testing in pregnant women in the context of ANC; there is no mention of TOP in the main text (online supplemental table 1). The EuroTEST panel on Guidance on Indicator Condition-Guided HIV Testing in Adults lists ‘pregnancy’ as an indication for HIV testing but puts in brackets ‘implications for the unborn child’, suggesting ANC settings only (online supplemental table 1). The Swiss Society of Gynaecology and Obstetrics manual on counselling before TOP does not mention HIV (online supplemental table 1).

Given the high rates of TOP among women subsequently diagnosed as HIV-positive6 35 36 and missed opportunities for earlier HIV diagnosis in this group of women,37 38 we would argue that offering HIV testing to all women seeking TOP as routine could normalise testing and avoid the sense of stigma or discrimination that comes with testing based on risk factors.49 Indeed, since the advent of ART, it makes no sense to offer testing to pregnant women in ANC but not to pregnant women seeking TOP when HIV prevalence is the same or potentially higher in the latter population. Barriers of time and lack of healthcare professional training can be addressed by embedding testing into the standard package of care and training staff, but HIV testing and specialty guidelines need to be explicit. Even if the majority of women tested at TOP will be negative, HIV testing provides an opportunity to examine options for HIV prevention; women with negative HIV tests at TOP but ongoing HIV risk could be candidates for pre-exposure prophylaxis.

While much has been published on cervical pathology in WWH, data on HIV risk in women attending colposcopy services are sparse. Despite the heterogeneity of the populations in the articles we reviewed, several trends were observed. As with TOP, older studies reported HIV risk factors, while subsequent studies described testing uptake. HIV prevalence among women attending colposcopy services was high compared with ANC services and the general population.40 41 The non-association between HIV and cervical pathology stage41–43 suggests that routine testing could be adopted in colposcopy services regardless of the ultimate cervical diagnosis, especially as the latter is usually available only after the colposcopy visit. As with TOP, attending colposcopy services is in itself an indication for testing. As with TOP, explicit mention of HIV testing in colposcopy services in specialist guidelines is absent.10 The European Society of Gynaecological Oncology guidelines on cervical carcinoma do not mention HIV testing, nor does the expert opinion on cervical screening published by the Swiss Society of Gynaecology and Obstetrics (online supplemental table 1).

This study has limitations. First, as described in the Results section, this review presents data from high-income, low HIV prevalence settings in Europe and North America and does not therefore represent women attending TOP and colposcopy services globally. Second, studies conducted in urban settings where HIV prevalence in the local population is >0.2% may report higher prevalence rates than would be observed elsewhere in the same country. Third, TOP study data came from accredited TOP services or obstetric hospitals; we did not include data from women undergoing TOP at illegal establishments and this may have introduced bias in the prevalence figures we have presented. Finally, despite a wide and inclusive literature search, all but one of the articles and abstracts we identified for this scoping review were published before 2016. These are the data available at the time of writing, and while they provide a historical perspective on testing in TOP and colposcopy services, they do not provide insight into how testing practices may have changed since the recommendation of ART regardless of CD4 count or since the concept of U=U (undetectable=untransmittable).


This scoping review confirms that, among women attending for TOP or colposcopy services, HIV prevalence is higher than that of the general population and above the 0.1% threshold for HIV testing to be economically feasible in high-income settings. In the current post-ART era, identifying HIV risk factors in women should be to prevent future HIV acquisition and not to justify testing; pregnancy is the indication, whether carried to term or not. If specialist guidelines state explicitly that HIV testing is indicated in all pregnant women, whether attending for TOP or ANC, and in women undergoing colposcopy, HIV testing could be optimised and missed opportunities which impact on women’s health could be reduced. TOP or colposcopy services provide not only an opportunity for HIV testing but for conversations on HIV prevention.

Key messages

  • Women and girls are relatively under-represented across the HIV treatment cascade, although they are at higher risk for late presentation.

  • While the British HIV Association recommends HIV testing explicitly in voluntary termination of pregnancy (TOP) as well as antenatal care (ANC), other national and international HIV testing guidelines recommend HIV testing in pregnancy for fetal well-being without mentioning TOP.

  • HIV prevalence in many TOP and colposcopy services is higher than that in ANC or the general population and >0.1%, the threshold for HIV testing to be economically feasible in high-income settings.

  • Recommending HIV testing explicitly in TOP and colposcopy services, regardless of risk factors or cervical pathology, could normalise testing and facilitate conversations on HIV prevention.

Ethics statements

Patient consent for publication


Supplementary materials

  • Supplementary Data

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  • Handling editor Laith J Abu-Raddad

  • Contributors PF conceptualised and designed the study, performed the systematic literature search, and prepared the initial draft. KEAD reviewed the literature search and prepared the manuscript for publication. All authors reviewed and approved the final version of the manuscript.

  • Funding KEAD received support from Gilead Sciences to examine HIV testing practices within Switzerland.

  • Disclaimer The opinions expressed in this review are those of the authors and do not necessarily represent those of Gilead Sciences. Gilead Sciences had no role in the review design, data analysis, preparation of the manuscript or decision to publish.

  • Competing interests PF has received travel grant for medical conference from Gilead, outside of the scope of this work. KF, MJ-G, LL and PM report no potential conflict of interest. MC’s institution has received a research grant from ViiV and Gilead and offered expert testimony for AbbVie, MSD, Gilead and Sandoz, outside of the scope of this work. KEAD’s institution has received sponsorship to specialist meetings from MSD, outside the scope of this work, and additional research funding unrelated to this publication from Gilead.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.