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Association of Cytomegalovirus Serostatus With Severe Acute Respiratory Syndrome Coronavirus 2 Vaccine Responsiveness in Nursing Home Residents and Healthcare Workers.


ABSTRACT:

Background

Latent cytomegalovirus (CMV) infection is immunomodulatory and could affect mRNA vaccine responsiveness. We sought to determine the association of CMV serostatus and prior severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection with antibody (Ab) titers after primary and booster BNT162b2 mRNA vaccinations in healthcare workers (HCWs) and nursing home (NH) residents.

Methods

Nursing home residents (N = 143) and HCWs (N = 107) were vaccinated and serological responses monitored by serum neutralization activity against Wuhan and Omicron (BA.1) strain spike proteins, and by bead-multiplex immunoglobulin G immunoassay to Wuhan spike protein and its receptor-binding domain (RBD). Cytomegalovirus serology and levels of inflammatory biomarkers were also measured.

Results

Severe acute respiratory syndrome coronavirus 2-naive CMV seropositive (CMV+) HCWs had significantly reduced Wuhan-neutralizing Ab (P = .013), anti-spike (P = .017), and anti-RBD (P = .011) responses 2 weeks after primary vaccination series compared with responses among CMV seronegative (CMV-) HCWs, adjusting for age, sex, and race. Among NH residents without prior SARS-CoV-2 infection, Wuhan-neutralizing Ab titers were similar 2 weeks after primary series but were reduced 6 months later (P = .012) between CMV+ and CMV- subjects. Wuhan-neutralizing Ab titers from CMV+ NH residents who had prior SARS-CoV-2 infection consistently trended lower than titers from SARS-CoV-2 experienced CMV- donors. These impaired Ab responses in CMV+ versus CMV- individuals were not observed after booster vaccination or with prior SARS-CoV-2 infection.

Conclusions

Latent CMV infection adversely affects vaccine-induced responsiveness to SARS-CoV-2 spike protein, a neoantigen not previously encountered, in both HCWs and NH residents. Multiple antigenic challenges may be required for optimal mRNA vaccine immunogenicity in CMV+ adults.

SUBMITTER: Freeman ML 

PROVIDER: S-EPMC9969739 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Association of Cytomegalovirus Serostatus With Severe Acute Respiratory Syndrome Coronavirus 2 Vaccine Responsiveness in Nursing Home Residents and Healthcare Workers.

Freeman Michael L ML   Oyebanji Oladayo A OA   Moisi Daniela D   Payne Michael M   Sheehan Maegan L ML   Balazs Alejandro B AB   Bosch Jürgen J   King Christopher L CL   Gravenstein Stefan S   Lederman Michael M MM   Canaday David H DH  

Open forum infectious diseases 20230204 2


<h4>Background</h4>Latent cytomegalovirus (CMV) infection is immunomodulatory and could affect mRNA vaccine responsiveness. We sought to determine the association of CMV serostatus and prior severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection with antibody (Ab) titers after primary and booster BNT162b2 mRNA vaccinations in healthcare workers (HCWs) and nursing home (NH) residents.<h4>Methods</h4>Nursing home residents (<i>N</i> = 143) and HCWs (<i>N</i> = 107) were vaccinated  ...[more]

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