Publications by authors named "Katerina Christopoulos"

Background: Point-of-care HIV viral load testing may enhance patient care and improve HIV health services. We aimed to evaluate the feasibility and acceptability of implementing such testing in a high-volume community sexual health clinic in the United States.

Methods: We conducted a cross-sectional, mixed-methods study.

View Article and Find Full Text PDF
Article Synopsis
  • Findings indicate that higher cumulative HIV viral load (VL) and lower CD4 cell counts are significantly linked to an increased risk of developing venous thromboembolism (VTE) in people living with HIV (PWH).
  • A study involving over 21,000 PWH over nearly five years revealed that those with higher cumulative VL had a 45% increased risk of VTE compared to those with lower VL. Additionally, a CD4 count below 100 cells/mm³ was associated with a fourfold increase in risk.
  • The research suggests that managing HIV viral load and maintaining CD4 levels could be crucial strategies to lower the risk of VTE in PWH.
View Article and Find Full Text PDF
Article Synopsis
  • Recent guidelines now support the use of long-acting injectable cabotegravir and rilpivirine (LA-CAB/RPV) for people with HIV who struggle with adherence, especially those experiencing viremia.
  • Studies show that while LA-CAB/RPV offers good viral suppression outcomes, the rate of treatment failure is higher compared to more stable patients, but alternative treatments like lenacapavir can still achieve viral suppression post-failure.
  • Effective implementation strategies include multidisciplinary clinic teams, patient incentives, flexible injection scheduling, and collaboration with various health services to help support HIV patients facing adherence issues.
View Article and Find Full Text PDF

Introduction: Perspectives on long-acting injectable cabotegravir/rilpivirine (CAB/RPV-LA) from HIV health disparity populations are under-represented in current literature yet crucial to optimize delivery.

Methods: Between August 2022 and May 2023, we conducted in-depth interviews with people with HIV (PWH) at four HIV clinics in Atlanta, Chicago and San Francisco. Eligibility criteria were current CAB/RPV-LA use with receipt of ≥3 injections or CAB/RPV-LA discontinuation.

View Article and Find Full Text PDF

Background: Doxycycline post-exposure prophylaxis (doxy-PEP) reduces chlamydia, gonorrhea, and syphilis infections among men who have sex with men (MSM) and transwomen (TW). Perspectives of health care providers (HCPs) regarding doxy-PEP can inform implementation efforts.

Methods: From August 2022 to January 2023, HCPs were recruited from 13 cities with high sexually transmitted infection (STI) rates for semi-structured, in-depth interviews about their awareness of and attitudes towards doxy-PEP for STI prevention.

View Article and Find Full Text PDF

Substance use is associated with decreased antiretroviral therapy (ART) adherence among people with HIV (PWH). Adherence plays a significant role in mediating the negative effects of substance use on HIV suppression and is a principal modifiable patient-level factor in improving HIV suppression and reducing ART drug resistance. Understanding substance use and ART adherence, particularly with rapidly changing substance use epidemiology and ART regimens, is vital to improving HIV care.

View Article and Find Full Text PDF
Article Synopsis
  • Monkeypox (mpox) has become more common and serious for people with HIV since 2022, with researchers looking into why some get sick and how others can protect themselves.
  • From a study of nearly 20,000 people living with HIV, 413 cases of mpox were found, with specific groups being more at risk, like younger people and those not on treatment for HIV.
  • The monkeypox vaccine was shown to be very effective, especially for people with a healthy immune system, but a lot of Black individuals with HIV were not getting vaccinated as often as others.
View Article and Find Full Text PDF
Article Synopsis
  • A study at the Ward 86 HIV clinic in San Francisco investigated the effectiveness of long-acting cabotegravir/rilpivirine (LA-CAB/RPV) in rapidly achieving and maintaining viral suppression in people with HIV who initially had high viral loads.
  • Out of 59 participants who started LA-CAB/RPV with detectable viremia, 80% achieved sustained viral suppression after 48 weeks, while overall 92% had viral suppression when considering those who switched treatments.
  • The findings suggest that LA-CAB/RPV can significantly aid individuals struggling with adherence to oral HIV medications, highlighting its potential as an effective long-term treatment option.
View Article and Find Full Text PDF

HIV stigma has a negative influence on antiretroviral therapy (ART) initiation and persistence and viral suppression. Immediate access to ART (RAPID ART) has been shown to accelerate viral suppression (VS) that is sustained up to one year after HIV diagnosis. Little is known about the role of RAPID ART in reducing individual-level stigma.

View Article and Find Full Text PDF
Article Synopsis
  • The study examines the impact of the COVID-19 pandemic on substance use disorders (SUD) in people with HIV, highlighting a significant increase in SUD risk post-pandemic shelter-in-place orders.
  • Data from over 7,000 participants revealed that moderate/high SUD risk rose from 24% pre-pandemic to 43% post-pandemic, with notable increases in the use of drugs like heroin and methamphetamine.
  • The findings suggest that increased social isolation and reduced access to treatment during COVID-19 exacerbated SUD among people with HIV, emphasizing the need for better integrated treatment solutions moving forward.
View Article and Find Full Text PDF

The purpose of this article is to describe a model of chronic disease self-management that incorporates the complexity of social and environmental interactions experienced by people who self-manage chronic conditions. This study combines quantitative data from a large national research cohort and qualitative interviews to test and refine a self-management model. The self-management within a syndemic model depicts the contextual, psychological, and social factors that predict self-management behaviors and clinical and long-term outcomes.

View Article and Find Full Text PDF

Objective: The aim of this study was to examine the effects of internalized HIV stigma on viral nonsuppression via depressive symptoms, alcohol use, illicit drug use, and medication adherence and investigate whether social support moderates these effects.

Design: Longitudinal observational clinical cohort of patients in HIV care in the US.Methods: Data from the CFAR Network for Integrated Clinical Systems (2016-2019) were used to conduct structural equation models (SEM) to test the indirect effects of internalized HIV stigma on viral nonsuppression through depressive symptoms, illicit drug use, alcohol use, and medication adherence.

View Article and Find Full Text PDF

The HIV Index is a validated self-report scale of engagement in HIV care previously correlated with future retention and virologic suppression. However, its performance in a monoethnic Latinx population has not been studied. We evaluated the HIV Index among Latinx persons living with HIV in the Centers for AIDS Research Network of Integrated Clinical Systems cohort and performed multivariable logistic regression to estimate its association with primary outcomes of suboptimal retention (not keeping 100% of HIV clinic appointments) and virologic suppression (HIV viral load <200 copies/mL).

View Article and Find Full Text PDF
Article Synopsis
  • - A study involving 3,288 people with HIV (PWH) found that 27% were unvaccinated against COVID-19, with approximately 9% reporting vaccine hesitancy, particularly among women, younger individuals, and Black PWH.
  • - Factors influencing vaccine hesitancy included being female (2.3 times more likely), identifying as Black (1.7 times more likely), being younger (1.4 times more likely), and having an unsuppressed viral load (1.9 times more likely).
  • - The study highlights the need for targeted efforts to address vaccine concerns in the PWH community to improve vaccination rates as the pandemic evolves and prepare for future public health challenges.
View Article and Find Full Text PDF

Background: Long-acting injectable (LAI) cabotegravir/rilpivirine (CAB/RPV) offers a novel drug delivery option for persons with human immunodeficiency virus (PWH) but requires administration every 4 or 8 weeks by a medical professional.

Methods: To facilitate LAI antiretroviral therapy (ART) scale-up, we evaluated patient interest in alternative administration approaches via a mixed-methods, serial cross-sectional study across 3 US HIV clinics. We surveyed PWH (December 2021 to May 2022) on appeal of self- or partner/friend/family-administered LAI-CAB/RPV; multivariable ordinal logistic regression explored associated characteristics.

View Article and Find Full Text PDF

Doxycycline postexposure prophylaxis (doxy-PEP) reduces sexually transmitted infections (STIs) in men who have sex with men (MSM) and transgender women (TGW). In a clinical trial of doxy-PEP, we sought to assess acceptability, impact, and meaning of doxy-PEP use among MSM/TGW. We conducted semistructured, in-depth 1:1 interviews with MSM and TGW enrolled in the intervention arm of the Doxy-PEP study.

View Article and Find Full Text PDF

Understanding the acceptability of long-acting injectable antiretroviral therapy (LAI-ART) among people with HIV (PWH), especially priority populations, is essential for effective implementation. We conducted semi-structured interviews with patients in three Ryan White-funded HIV clinics in San Francisco, Chicago, and Atlanta. We employed maximal variation sampling across age, gender, race, ethnicity, and time living with HIV and oversampled for individuals with suboptimal clinical engagement.

View Article and Find Full Text PDF

Background: Early evidence suggests long-acting injectable cabotegravir and rilpivirine (LA-CAB/RPV) may be beneficial for people with HIV (PWH) who are unable to attain viral suppression (VS) on oral therapy. Limited guidance exists on implementation strategies for this population.

Setting: Ward 86, a clinic serving publicly insured PWH in San Francisco.

View Article and Find Full Text PDF
Article Synopsis
  • A study on people with HIV (PWH) assessed how different subgroups experience internalized HIV stigma (IHS) using a four-item survey between February 2016 and November 2022, involving over 12,000 participants.
  • Results showed that younger individuals, cisgender women, and those living in specific regions reported higher IHS scores, while Black/African American and Latine participants had lower scores compared to their White counterparts.
  • The study emphasizes the widespread nature of IHS among PWH and the importance of tailored interventions and routine screenings to address and reduce stigma within different subgroups.
View Article and Find Full Text PDF

Background: People living with HIV (PWH) are experiencing an increased prevalence of non-AIDS-defining cancers (NADCs). Our study investigated the association of immunosuppression and HIV control with NADCs among PWH on antiretroviral therapy (ART) in the United States.

Methods: Among patients across 8 clinical cohorts on ART between 1996 and 2016, we assessed immune function and HIV control using 3 parameterizations of CD4 count and HIV-RNA viral load (VL): (1) CD4 or VL at ART initiation; (2) change in CD4 or VL after ART initiation; and (3) proportion of follow-up time at CD4 >500 cells/µL or VL <50 copies/mL.

View Article and Find Full Text PDF

We examined changes in the proportion of people with human immunodeficiency virus (PWH) with virologic suppression (VS) in a multisite US cohort before and since the coronavirus disease 2019 (COVID-19) pandemic. Overall, prior gains in VS slowed during COVID-19, with disproportionate impacts on Black PWH and PWH who inject drugs.

View Article and Find Full Text PDF
Article Synopsis
  • Long-acting injectable antiretroviral therapy (LAI-ART) is the latest development in HIV treatment, requiring research to improve access for all individuals living with HIV.
  • Focus group discussions were held with healthcare providers in major US cities to identify barriers and facilitators for implementing LAI-ART, emphasizing organizational readiness and participant insights.
  • Key findings showed a strong commitment to equitable access to LAI-ART, the need for clinics to take on more responsibility for patient adherence, and highlighted the importance of strengthening existing systems and resources to facilitate broader implementation.
View Article and Find Full Text PDF

Objective: Accurate estimation of kidney function is critical among persons with HIV (PWH) to avoid under-dosing of antiretroviral therapies and ensure timely referral for kidney transplantation. Existing estimation equations for kidney function include race, the appropriateness of which has been debated. Given advancements in understanding of race and the necessity of accuracy in kidney function estimation, this study aimed to examine whether race, or genetic factors, improved prediction of serum creatinine among PWH.

View Article and Find Full Text PDF