Impact of Previous HPV Infection and CD4 T-Cell Levels on Immune Responses to a Three-Dose Nonavalent HPV Vaccine in Individuals with HIV Undergoing ART - Report - MDSpire
Advertisement
Impact of Previous HPV Infection and CD4 T-Cell Levels on Immune Responses to a Three-Dose Nonavalent HPV Vaccine in Individuals with HIV Undergoing ART
Impact of Previous HPV Infection and CD4 T-Cell Levels on Immune Responses to HPV Vaccine
Overview
This study evaluates the T-cell immune response to the Gardasil 9® HPV vaccine in individuals with HIV, focusing on the influence of prior HPV infection and CD4 T-cell levels. Findings indicate that higher CD4 counts correlate with improved immune responses, while prior HPV infection does not negatively affect vaccine-induced cellular responses.
Background
People with HIV (PWH) experience a higher incidence of HPV infections, leading to increased risks of HPV-related cancers. Vaccination against HPV is crucial for this population, as it can prevent these infections and associated malignancies. Understanding the immune response to HPV vaccines in PWH, particularly in relation to CD4 T-cell levels and prior HPV infections, is essential for optimizing vaccination strategies.
Data Highlights
No numerical data available in the source material.
Key Findings
Higher CD4 T-cell counts (> 500 cells/µl) are associated with enhanced immune responses to the Gardasil 9® vaccine.
Prior HPV infection does not diminish the vaccine-induced cellular immune response in PWH.
Participants with CD4 counts ≤ 200 cells/µl showed lower seroconversion rates compared to those with higher counts.
Immunogenicity of the HPV vaccine in PWH is comparable to that in HIV-uninfected individuals.
Long-term stability of antibody levels post-vaccination has been observed in PWH.
Clinical Implications
Healthcare providers should prioritize HPV vaccination in PWH, especially those with higher CD4 counts, to maximize immune responses. Continuous monitoring of CD4 levels and vaccination history can guide clinical decisions regarding HPV vaccination strategies in this population.
Conclusion
The study underscores the importance of CD4 T-cell levels in determining immune responses to HPV vaccination in PWH, while also highlighting that prior HPV infections do not adversely affect these responses.
by Eeva Tortellini, Mariasilvia Guardiani, Anna Carraro, Lorenzo Ansaldo, Sara Corazza, Sara Giovanna De Maria, Silvia Garattini, Mirko Barresi, Valeria Belvisi, Maria Antonella Zingaropoli, Federica Dominelli, Carmen Falvino, Fabio Mengoni, Alessandro Tavelli, Cristina Giambi, Claudio Maria Mastroianni, Cosmo Del Borgo, Raffaella Marocco, Miriam Lichtner
Investigative report cites internal communications, VAERS data, and CDC case reviews describing myocarditis and pericarditis reports in adolescents and young adults after mRNA COVID-19 vaccination.
Chemsex at the pharmacy counter. Gut bacteria tracking helmet impacts. PMD predicting psychiatric illness bidirectionally. This week's research keeps landing in the same uncomfortable place: medicine is improvising.
