Direct collaboration between hospitals and NGOs, an essential tool to reinforce linkage to care in People living with HIV

doi:10.21203/rs.3.rs-4862637/v1

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Direct collaboration between hospitals and NGOs, an essential tool to reinforce linkage to care in People living with HIV

https://doi.org/10.21203/rs.3.rs-4862637/v1

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With the aim of improving access and engagement to healthcare in people living with HIV (PLHIV), in 2022 Gregorio Marañón Hospital and the NGO COGAM developed a circuit for recruitment and referral to hospital. Program targeted PLHIV who were neither receiving antiretroviral treatment (ART) nor on medical follow-up (FU); but also, individuals at risk who underwent screening tests at the NGO and, if positive, were referred for confirmation. The result was an increase in annual new PLHIV seen in hospital by reaching a population who were, essentially, young men (94% male, median age 30 years), migrants (95%) with recent diagnosis of HIV (median 5 years) and who were recently arrived in Spain (median 5 months). Most of them hadn´t healthcare coverage (78%). In multivariate analysis, that included all PLHIV seen for the first time in the ID Unit between 2019 and 2022, lack of healthcare coverage was the only independent predictor of lost to FU that reached statistical significance (HR 5.19, CI 2.76–9.47). Furthermore, time from HIV diagnosis to ART initiating was shortened from 14 to 6 days without affecting linkage to care. Our conclusion is that collaboration with NGOs reinforce diagnosis, FU, and adherence to ART for PLHIV.

HIV

linkage-to-care

access to antiretroviral treatment

migrants

NGO

HIV treatment regimens have progressively gained in effectiveness and tolerability over the decades. Therefore, nowadays and worldwide, virological failure normally isn’t due to inefficacy of antiretroviral treatment regimen but rather to lack of access to medication or poor therapeutic adherence. It has been demonstrated that undetectable viral load in people living with HIV (PLHIV) suppress viral transmission [1–2]; and moreover, it radically reduces mortality, both for HIV related diseases but also for non-HIV related conditions [3]. UNAIDS has set global targets to be achieved by 2030: 95% of HIV-infected patients will be diagnosed; 95% of those diagnosed will be on antiretroviral treatment; 95% of them will reach undetectable HIV viral load (95-95-95) [4–5]. Achieving these goals will depend, therefore, not on the emergence of new antiretroviral drugs or new treatment regimens, but on the access to HIV medication and linkage to healthcare.

In Madrid, which has a public universal healthcare system; coverage on public health diseases, including HIV infection, is mandatory. Therefore, medical care and treatment for those diseases are entirely free [6]. The city also has a wide network of hospitals and clinics. However, factors such as healthcare system saturation, immigration, social exclusion, and stigma have been identified as barriers to accessing healthcare centers for PLHIV and individuals at risk of infection [7]. In 2022, Infectious Diseases (ID) Unit in Gregorio Marañón University Hospital (HGUGM) and non-governmental organization (NGO) COGAM developed a project entirely implemented in the community, meaning outside the hospital environment; aimed at the recruitment and direct referral to the hospital with the objective to reinforce linkage to care in PLHIV. Here we present the results obtained and the impact of this project on the activity of the HIV Ward compared to previous years.

The HGUGM is a tertiary hospital that is part of the public hospital network in Madrid. Users can access either from the EmergencyWard, or from Primary Care, or from referral from other public healthcare centers.

COGAM, on the other hand, is a non-profit NGO focused on serving the LGBT + community in Madrid. At its headquarters, they carry out rapid diagnosis tests for HIV and HCV infection anonymously and free of charge.

In 2022, with the aim of facilitating and reinforcing access to the healthcare system for PLHIV and population at risk; both institutions, HGUGM and COGAM, carried out an informative, divulgate HIV-project but also screening, recruitment, and referral-to-care program whose geographical spot of intervention was extrahospitallary, thus took place in the community. For this purpose, usual activity of COGAM was increased through informative sessions at its headquarters open to the public; intensification of their activity on social networks; and increasing the number of kits available for rapid diagnosis. At the same time, a circuit for direct and rapid referral to the ID Unit of the HGUGM was established.

To analyze the results of this intervention in PLHIV and also the impact it had on the ID Unit, a retrospective observational study was conducted of all people with HIV infection who had initiated follow-up and treatment for their infection at the HGUGM between 1st January 2019 to 31st December 2022. We selected this time period to include both the intervention time and the previous period showing ID Unit usual activity, which we extended to reach the pre-pandemic year, to avoid the potential effect COVID could have had on the study population. We included patients newly diagnosed who had not yet received ART and patients with previous diagnose of HIV infection performed in other centers who attended the HGUGM for continuity of care.

For all of them and through the information provided in the hospital's electronic medical records, epidemiological, social, clinical, and immunovirological variables were collected. After performing descriptive analysis, we compared the characteristics of those patients referred from NGOs with those patients who came through conventional referral channels that are entirely from and within the healthcare system.

The study was conducted in accordance with the Declaration of Helsinki and Istanbul and was approved by the ethics committee of the Hospital General Universitario Gregorio Marañón, which waived informed consent for the collection of clinical data (Code: MICRO.HGUGM.2022-026). All the processes satisfied the local data confidentiality requirements.

Statistical analysis:

The results of continuous variables are presented as median and interquartile range (percentile 25; percentile 75). For categorical variables, results are shown in frequencies and percentages. Normality analysis was studied from frequency histograms and with the Kolmogorov-Smirnov test.

To study the differences in means between the two groups, parametric tests (Student's t-test or ANOVA) or non-parametric tests (Mann-Whitney or Kruskal-Wallis) were used, choosing the most appropriate one in each case based on the normality of the data and the total number of patients in each group. The association between qualitative variables was studied using Pearson's chi-square test or Fisher's exact test.

To study the predictive factors of loss to follow-up, Kaplan-Meier curves and Cox regression were utilized. Statistical analysis was conducted using IBM SPSS Statistics for Windows, Version 25.0. (IBM Corp., Armonk, NY). Bilateral tests were employed, and results with a p-value < 0.05 were considered statistically significant.

Between1st January 2019 to 31st December 2022, the ID Unit of HGUGM received 500 new patients diagnosed with HIV infection. Among these, 203 were newly diagnosed cases (53 in 2019, 38 in 2020, 49 in 2021, 60 in 2022) and 297 were patients referred from other healthcare centers to HGUGM for continuity of HIV care and treatment (62 in 2019, 45 in 2020, 53 in 2021, 135 in 2022). 86 of all these patients were referred from an NGO, of which 21 were newly diagnosed with HIV infection and 67 were patients with previously known infection. In 2019, no patients were referred from an NGO, in 2020 only one for continuity of care for a known HIV infection, and in 2021 seven patients, three of whom were newly diagnosed with the infection. In 2022, following the direct referral program established with COGAM, the number increased to 78 patients with HIV infection referred from NGOs: 17 were naive cases and the rest were previously diagnosed patients.

Of the total 500 patients, their epidemiological, clinical and social characteristics are shown in Table 1.

Table 1

Epidemiological, clinical and social characteristics
	New diagnosis (n = 203)			Follow up (n = 297)			Overall (n = 500)
	NGO (n = 21)	No NGO (n = 182)	p	NGO (n = 67)	No NGO (n = 230)	p	NGO (n = 88)	No NGO (n = 412)	p
Age (years)	30 (25–38)	36 (30–45)	0.007	30 (28–36)	37 (30–49)	0.0000	30 (28–36)	37 (30–47)	0.0000
Sex: • Men • Women • Trans women	20 (95%) 0 1 (5%)	154 (85) 21 (11%) 7 (4%)	0.1878 0.1002 0.8382	63 (94%) 0 4 (6%)	191 (83%) 29 (13%) 10 (4%)	0.0245 0.0022 0.5814	83 (94%) 0 5(6%)	345 (84%) 50 (12%) 17 (4%)	0.0103 0.0006 0.5184
Country of origin: • Spain • Rest of Europe • Venezuela • Colombia • Peru • Rest of latinamerica • Morroco • Subsaharan Africa • Others	3 (14%) 0 7 (33%) 4 (19%) 3 (15%) 4 (19%) 0 0 0	81 (44%) 5 (3%) 24 (13%) 9 (5%) 14 (8%) 32 (18%) 10 (5%) 4 (2%) 3 (2%)	0.0078 0.4418 0.0151 0.0124 0.3017 0.8678 0.2706 0.4926 0.5534	0 2 (3%) 18 (27%) 26 (39%) 7 (10%) 13 (19%) 0 0 1 (2%)	73 (32%) 15 (6%) 38 (16%) 24 (10%) 18 (8%) 50 (22%) 2 (1%) 6 (3%) 4 (2%)	0.0000 0.2728 0.0568 0.0000 0.4964 0.6806 0.4438 0.1817 0.8902	3 (3%) 2 (2%) 25(29%) 30 (34%) 10 (12%) 17 (19%) 0 0 1 (1%)	154 (37%) 20 (5%) 62 (15%) 33 (8%) 32 (8%) 82 (20%) 12 (3%) 10 (2%) 7 (2%)	0.0000 0.2838 0.0027 0.0000 0.2695 0.9006 0.1051 0.1399 0.7026
Time in Spain (months)	46 (13–118)	9 (7–15)	0.003	7 (2–55)	3 (1–7)	0.0000	5 (1–9)	28 (4–96)	0.0000
Initial Healthcare coverage • No	10 (48%)	14 (8%)	0.0000	59 (88%)	48 (21&)	0.0000	69 (78%)	62 (15%)	0.0000
Final Healthcare coverage • NO	6 (29%)	8 (4%)	0.0000	17 (25%)	19 (8%)	0.0002	23 (26%)	27 (7%)	0.000
REFERRED FROM Emergency room Other hospital ward Primary Care STI Clinic Other hospital in Madrid Other hospital outside Madrid Other/unkown		40 (22%) 52 (29%) 48 (26%) 16 (9%) 6 (3%) 0 20 (11%)			31 (14%) 22 (10%) 47 (20%) 9 (4%) 26 (11%) 26 (11%) 69 (30%)			71 (17%) 74 (18%) 95 (23%) 25 (6%) 32 (8%) 26 (6%) 89 (22%)
Time of HIV Infection (years)				5 (2–8)	7 (4–12)	0.001
Risk group MSM Hetero IVDU MSM/IVDU Other/unknown	21 (100%)	133 (76%) 34 (20%) 3 (2%) 4 (2%)	0.0123 0.0258 0.5442 0.4827	65 (98.5%) 1 (1.5%)	166 (75%) 32 (14%) 21 (9%) 2 (1%) 2 (1%)	0.0000 0.0040 0.0096 0.4401 0.4401	86 (99% 1 (1%)	299 (75%) 66 (17%) 24 (6%) 6 (1.5%) 2 (0.5%)	0.0000 0.0002 0.0187 0.2486 0.5071
Prior AIDS condition	1 (5%)	28 (15%)	0.1878	3 (5%)	28 (12%)	0.0698	4 (5%)	56 (14%)	0.0178
Basal CD4 count	394 (256–537)	358 (195–555)	0.571	665 (505–842)	624 (402–879)	0.380
Basal Viral load -log	4.5 (4–5)	5 (4–6)	0.080
Detectable viral load for ART interruption at recruitment				10 (15%)	54 (24%)	0.0894
Delay on ART initiation (days)	6 (2–21)	14 (7–34)	0.054
AIDS condition at recruitment	1 (33%)	19 (14%)	0.3486	2 (33%)	7 (5%)	0.0029	3 (33%)	26 (9%)	0.0159
STD basal	9 (43%)	52 (29%)	0.1819	13 (19%)	44 (19%)	0.9725	22 (25%)	96 (23%)	0.7510
Quantiferon +	3 (15%)	16 (10%)	0.4545	8 (13%)	23 (12%)	0.8897	11 (13%)	39 (11%)	0.5392
Active TB	1 (5%)	3 (2%)	0.3337	1 (1.5%)	2 (1%)	0.6551	2 (2%)	5 (1%)	0.4433
No HIV related diseases: Cardiovascular Oncological Hypertension Diabetes Mellitus Dyslipidemia Nephropathy Respiratory Disease Liver Disease	0 0 1 (5%) 0 0 0 0 0	3 (2%) 6 (3%) 9 (5%) 4 (2%) 4 (2%) 2 (1%) 4 (2%) 5 (3%)	0.5522 0.3970 0.9664 0.4914 0.4914 0.6283 0.4902 0.4406	0 1 (1.5%) 0 0 6 (9%) 0 1 (1.5%) 0	7 (3%) 6 (3%) 17 (8%) 8 (4%) 28 (12%) 2 (1%) 5 (2%) 27 (12%)	0.1466 0.5902 0.0213 0.1201 0.4536 0.4418 0.7210 0.0031	0 1 (1%) 1 (1%) 0 6 (7% 0 1 (1%) 0	10 (2%) 12 (3%) 26 (6%) 12 (3%) 32 (8%) 4 (1%) 9 (2%) 32 (8%))	0.1384 0.3378 0.0500 0.1038 0.7474 0.3516 0.5174 0.0067
STD while follow-up	4 (19%)	34 (19%)	0.9763	11 (16%)	39 (17%)	0.8614	15 (17%)	73 (18%)	0.7977
Closure: 1: active follow-up 2: move to other region 3: move to other country 4: return to original country 5: lost of follow-up 6: jail 7: death 8. change of hospital in Madrid	16 (76%) 1 (5%) 1 (5%) 0 2 (9%) 0 0 1 (5%)	156 (86%) 9 (5%) 3 (1.5%) 0 8 (4%) 1 (0.5%) 2 (1%) 3 (2%)	0.2506 0.9707 0.3310 0.3039 0.7335 0.6293 0.3310	50 (75%) 3 (5%) 0 0 12 (18%) 0 0 2 (3%)	179 (78%) 19 (8%) 1 (0.5%) 3 (1%) 21 (9%) 1 (0.5%) 0 6 (3%)	0.5834 0.2981 0.5888 0.3474 0.0442 0.5888 0 0.8670	335 (82%) 28 (7%) 4 (1%) 3 (1%) 29 (7%) 2 (0.5%) 2 (0.5%) 9 (2%)	66 (75%) 4 (5%) 1 (1%) 0 14 (16%) 0 0 3 (3%)	0.1775 0.4336 0.8874 0.4220 0.0071 0.5125 0.5125 0.4956

At the end of the study, there were 43 (9%) patients who were lost to follow-up (LFU) from the total included, of which 14 (16%) came from NGOs. 8% (401) of the overall patients in the study maintained active follow-up at the end of the study period; and 75% (66) of those coming from NGOs. When analyzing other causes to discontinue follow-up in our clinic apart from LFU, such as transfer to another hospital, move to other Community in Spain, or return to country of origin, no differences were found between patients from the NGO compared to those who had accessed our ID service through other means. A multivariate analysis of factors associated with LFU was conducted using Cox regression and adjusting for country of origin other than Spain; NGO origin; time in Spain (less than 1 year, between 1 and 10 years, and more than 10 years); IV drug user risk group, CDC stage C; and health coverage at the end of the study. Only the absence of health coverage at the time of study closure reached statistical significance as an independent factor for LFU (HR 5.19, CI 2.76–9.47). Other factors such as coming from an NGO (HR 1.94, CI 0.99–3.89) or being from a country other than Spain (HR 3.08, CI 0.93–10.16) nearly reached significance. It is important to note that the number of losses in the overall study is small, which limits this analysis. Figure 1.

For naive patients, establishing a direct referral pathway to the hospital from the NGO helped shorten the time from HIV diagnosis to the initiation of antiretroviral therapy (ART): 6 days for naive patients from an NGO, compared to 14 days for other newly diagnosed individuals (p = 0.054). Hence, we aimed to analyze whether early initiation of ART was associated with a higher LFU. For this, a multivariate analysis using Cox regression for LFU in the naive patients of our study was conducted, adjusted for: delay in the start of ART (less than 7 days, between 7 and 14 days, and more than 14 days); country of origin other than Spain; NGO origin; time in Spain (less than 1 year, between 1 and 10 years, and more than 10 years); CDC stage C; and health coverage at the end of the study. None of these factors showed statistical significance as predictors of loss to follow-up, although the number of losses to follow-up was very small, limiting the power of the analysis. Figure 2.

The project presented demonstrates that the collaboration of health institutions with NGOs in conducting community interventions is an essential strategy for linking PLHIV to the healthcare system. In the epidemiological control of HIV infection, the challenge is to provide access to ART for every infected patient. Globally, obtaining these drugs requires visiting healthcare institutions, typically hospitals, where the medication is dispensed. In this process, PLHIV may encounter multiple barriers that ultimately impede achieving the UNAIDS targets for 2030 “95-95-95”. These barriers vary by individual according to his geographic area of residence and the healthcare setting he is in; but globally the main issues are stigma and difficulty accessing healthcare facilities to obtain medication [7–10]. These two aspects also have an impact on the psychological sphere, worsening the negative health and wellbeing effects of the infection [11].

Regarding stigma, often stigma inherent to HIV infection overlaps with that linked to certain groups such as men who have sex with men, transgender people, non-Caucasian races, or migrants [12–15]. Concerning accessibility to healthcare, while ART is available worldwide, there are obstacles such as the physical distance from a patient's residence to healthcare centers; or the lack of health coverage that prevents the admission on healthcare system. Addressing all these issues is where healthcare institutions have many limitations, and where direct collaboration with NGOs can be of great help.

In public health, for the prevention in transmission of infections that are a threat to the community, collaboration between governments and NGOs has led to improvements in epidemiological control [16–19]. Regarding HIV, NGOs have always played a crucial role in preventing infection and in accessing treatment for infected individuals, serving as a link with socially excluded groups such as sex workers, drug addicts, migrants, or the homosexual population [20–21].

Concerning PLHIV and individuals at risk of infection, in countries where stigma towards the community of men who have sex with men has been identified as the main obstacle to accessing HIV diagnosis, such as China [22], India [23], or Cameroon[24–25], community strategies have been implemented to facilitate access to the healthcare system and antiretroviral medication.

In Western countries where health standards and legislation should be favorable to ensuring therapeutic coverage for PLHIV, there are still infected individuals who do not undergo treatment. The migrant population is particularly vulnerable [26], representing over 50% of new HIV infection diagnoses in Spain [27], most of them late presenters [28]. Therefore, screening and counseling strategies are necessary in this population [29]. Despite optimizing resources from institutions, it is imperative to intervene directly in the community so collaboration with NGOs is essential. In Catalonia (Spain), there is already close collaboration with HIV-related NGOs, and currently, 30% of new HIV infection diagnoses in this region are made in these organizations [30–31].

Our work is conducted in Madrid, where coverage for patients with public health diseases, including HIV infection, is universal and free. However, the program presented in this work, involving direct collaboration with NGOs for community intervention, has allowed us to reach a population that does not enter healthcare system through conventional channels, and to whom we were not previously providing coverage, posing a threat to the epidemiological control of HIV pandemic. In our analysis, we found distinctive characteristics of these individuals compared to the rest of PLHIV. They were, essentially, men or transgender women infected by sexual transmission, predominantly newly arrived migrants to Spain in irregular administrative situation. Almost all came from Latin American countries. Overall, no differences were observed in terms of HIV clinical manifestations, immunovirological status, or presence of other comorbidities.

We analyzed sexually transmitted infections (STIs) that were registered in clinical records by the time patients were first seen in the hospital and also throughout the follow-up in our center. We emphasize that the main objective of this study was not the analysis of STIs and that the direct collaboration project with the NGO focused on HIV infection, without any specific diagnostic or therapeutic strategy for STIs. Therefore, we believe that the STIs incidence found in our study may be underestimated. Despite this, that incidence was remarkable in both groups as 17% of PLHIV from the total individuals included in the study presented some type of STI during follow-up in our center.

Simultaneously, the establishment of a direct referral pathway has allowed prompt evaluation of these HIV patients in the hospital, streamlining the initiation of ART in naive patients. Strategies for rapid initiation of ART have been questioned for their potential limitations in promoting linkage to healthcare system for PLHIV, particularly for vulnerable populations [32–34]. However, some studies conducted in low-income countries seem to indicate the opposite [35], as well as publications in vulnerable populations in the United States [36–37]. In our work, in naive patients, we did not find differences in the risk of LFU in those who initiated ART in the first 7 days compared to those initiated in the first 14 days or later, although a limitation of our analysis is that the number of losses was very low. On the other hand, our community interventional program for diagnosis and referral to healthcare in PLHIV did not find a favorable impact on early diagnosis of HIV infection, as the median CD4 count at diagnosis in naïve patients was similar in both groups, derived and not derived from NGOs, although that median was above 350 cells/microliter.

In the presented collaboration project between HGUGM and the NGO COGAM for the direct referral of PLHIV to the hospital, social workers from both institutions were integrated. They provided counseling and administrative assistance to migrant population, thereby achieving integration into the healthcare system for most of the included patients. Thus, while patients from NGOs compared to those accessing the healthcare system through other channels were significatively higher on administrative exclusion at the start and at the end of the study, the proportion of patients from NGOs in social exclusion decreased from 78% upon arrival at the hospital to 26% at the end of the study due to the work of the social workers. This had a very favorable impact on treatment adherence and linkage to care, as reflected in administrative exclusion being the only factor related to LFU in our analysis. The legal absence of healthcare coverage had already been identified in previous studies as the main barrier to access to ART in Europe [38–40].

Direct collaboration with NGOs to reinforce the diagnosis, medical follow-up, and treatment adherence of people living with HIV infection allows for direct intervention in the community, accessing a group of patients who do not use standardized referral channels. These PLHIV are primarily migrant homosexual men from South American countries, newly arrived in Spain and still in administrative exclusion. Despite the availability of ART in Spain, this situation of administrative exclusion is the main barrier to accessing the healthcare system and the main factor associated with loss to follow-up in PLHIV. Collaboration with NGOs within a multidisciplinary team including doctors, nurses, and social workers facilitates the administrative incorporation into healthcare systems of individuals in exclusion. Furthermore, establishing a direct referral pathway to Infectious Diseases Services in newly diagnosed naive HIV patients shortens the time to initiate ART without impacting treatment adherence or retention in the healthcare system.

NGO: non-governmental organization

ART: antiretroviral treatment

HIV: human immunodeficiency virus

PLHIV: people living with HIV

LGBT+: lesbian, gays, bisexual, transgender

ID: Infectious Diseases

HGUGM: Gregorio Marañón University Hospital

ACKNOWLEDGEMESTS:

Gilead Grants, project number:14855

AUTHOR´S CONTRIBUTIONS:

Teresa Aldamiz-Echevarria (TAE), Chiara Fanciulli (CF), Mónica López (ML), Leire Pérez (LP), Francisco Tejerina (FT), David Sánchez (DS), Blanca Lodeiro (BL), Juan Carlos López (JCL), Juan Brerenguer (JB), Cristina Diez (CD) contributed to the study development, data collection, data analysis and redaction of the manuscript

Jose Maria Bellón (JMB) contributed in the statistical analysis

Maria Ferris (MF), Mario Blazquez (MB), Almudena Calvo (AC), Mario Domene (MD), Oswaldo Vegas (OV), Carmen Rodriguez (CR) contributed to the study development

Patricia Muñoz (PM), Paloma Gijón (PG), Pedro Montilla (PM), Elena Bermúdez (EB), Maricela Valerio (MV), Roberto Alonso (RA), Belen Padrilla (BP), Cristina Ventimilla (CV) contributed to the study development and redaction of the manuscript

Availability of data and materials: Data is provided within the manuscript

Ethics approval and consent to participate: The study has been approved by the ethics committee of the Gregorio Marañón Hospital (Code: MICRO.HGUGM.2022-026).

Consent for publication: all authors agree for publication

Competing interests: the authors have no competitive interests

Funding. This project received grant from Gilead Grants (project number:14855).

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Direct collaboration between hospitals and NGOs, an essential tool to reinforce linkage to care in People living with HIV

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