Casper Rokx

Erasmus University Medical Center
Country flagNetherlands

Research Interests

Explore related searches

Contact this professor

Get a free first email built on one of their papers, ready for you to edit and send yourself.

Articles (11)

Year:

2025

Year:

2025

Year:

2025

Year:

2025

Year:

2025

Year:

2025

Year:

2025

Background The two main objectives were to evaluate the COVID-19 point prevalence and the test performance of the WHO case definition to diagnose COVID-19 clinically in people with HIV in West Ukraine. Methods Multicenter cross-sectional study in Lviv, Ukraine, from October 2020-November 2021. COVID-19 unvaccinated people with HIV were included regardless of COVID-19 symptoms at routine clinical visits and had standardized medical, quality of life (EQ(5D)) and SARS-CoV-2 serology assessments. Reported symptoms indicating potential COVID-19 events at inclusion or between March 2020 and inclusion were classified by the WHO case definition as suspected, probable or confirmed. A clinical COVID-19 case was defined as being SARS-CoV-2 seropositive with at least a suspected COVID-19 according to the WHO case definition. The primary endpoints were the clinical COVID-19 prevalence and the test characteristics of the WHO case definition with SARS-CoV-2 serology as reference. (Clinicaltrials.gov:NCT04711954). Results The 971 included people with HIV were median 40 years, 38.8% women, 44.8% had prior AIDS, and 55.6% had comorbidities. SARS-CoV-2 seroprevalence was 40.1% (95%CI:37.0–43.1) and 20.5% (95%CI:18.0–23.1) had clinical COVID-19 median 4 months (IQR:2–7) before inclusion. Clinical COVID-19 occurred less frequently in people with HIV with tuberculosis history, injecting drug use, CD4+ T-cells <200/mL and unemployment. The quality of life was not impacted after COVID-19. An at least probable COVID-19 classification by the WHO case definition had 44.1% sensitivity (95%CI:38.7–49.7), 85.2% specificity (95%CI:81.5–88.4), 66.6% positive predictive value (95%CI:59.8–73.0) and 69.5% negative predictive value (95%CI:65.5–73.3) to diagnose COVID-19. Conclusions COVID-19 unvaccinated people with HIV from Ukraine had a significant COVID-19 rate and using the WHO case definition had insufficient diagnostic accuracy to diagnose these cases. The lower burden in vulnerable people with HIV was unexpected but might reflect a shielding effect.

Year:

2024

Year:

2024

Year:

2024

Year:

2024

Collaborators (7)

Anna H.E. Roukens

Leiden University Medical Center

NETHERLANDS
View details

Patrick Bindels

Erasmus University Rotterdam

NETHERLANDS
View details

Thibault Mesplède

Assistant Professor

Erasmus MC

NETHERLANDS
View details

Bart Rijnders

Professor

Erasmus University Medical Center

NETHERLANDS
View details

Harmen van de Werken

Assistant Professor Computational Biology & Bioinformatics at the Department of Immunology

Erasmus MC

NETHERLANDS
View details

David van de Vijver

Erasmus University Rotterdam

NETHERLANDS
View details

Ralf van de Laar

Erasmus University Rotterdam

NETHERLANDS
View details
ApplyKite TwinLearns as you apply

Make your next move.

Prepare your application

Review drafts before you send them.