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Griffiths M, Hatabah D, Sullivan P, Mantus G, Sanchez T, Zlotorzynska M, Heilman S, Camacho-Gonzalez A, Leake D, Korman R, Le M, Suthara M, Wrammert J, Vos MB, Morris CR. Incidence of SARS-CoV-2 seropositivity in pediatric healthcare workers prior to widespread vaccination: A 5-month longitudinal cohort study. Int J Infect Dis 2024; 144:107064. [PMID: 38641316 DOI: 10.1016/j.ijid.2024.107064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/28/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024] Open
Abstract
OBJECTIVES Determine SARS-CoV-2 IgG antibody incidence over time in unvaccinated pediatric healthcare workers (pHCWs). DESIGN A prospective longitudinal cohort of unvaccinated pHCWs measuring the incidence of new infection after initial prevalence was established at 4.1% with seropositive predominance in emergency department (ED)-based pHCWs. Serum samples were collected at follow-up visits to detect new SARS-CoV-2 seropositivity. Univariate analysis was performed to estimate different incidence rates between participant demographics, job, employment location, and community risk factors. Anxiety levels about COVID-19 were collected. SARS-CoV-2 antibody decay postinfection and neutralization antibodies were evaluated. Log-linear Poisson regression models were used to estimate incidence. RESULTS Of 642 initially enrolled, 390 pHCWs presented for at least one follow-up serology test after baseline analysis. The incidence of SARS-CoV-2 seropositivity was 8.2%. The seropositive cohort, like the negative one, consisted mainly of females in non-ED settings and nonphysician roles. There were no statistically significant differences in incidence across variables. Seropositive participants dropped antibody titers by 50% at 3 months. Neutralization antibodies correlated to SARS-CoV-2 binding antibodies (r = 0.43, P < 0.0001). CONCLUSION The incidence of seropositivity was 8.2%. Although seropositivity was higher among ED staff during the early stages of the pandemic, this difference declined over time, likely due to the universal adoption of personal protective equipment.
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Affiliation(s)
- Mark Griffiths
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Dunia Hatabah
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Patrick Sullivan
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Grace Mantus
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Travis Sanchez
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Maria Zlotorzynska
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Stacy Heilman
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Andres Camacho-Gonzalez
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Children's Healthcare of Atlanta, Atlanta, GA, USA; Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | | | - Rawan Korman
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Mimi Le
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Center for Clinical and Translational Research, Emory University and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Mehul Suthara
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Jens Wrammert
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Miriam B Vos
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Children's Healthcare of Atlanta, Atlanta, GA, USA; Center for Clinical and Translational Research, Emory University and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Claudia R Morris
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Children's Healthcare of Atlanta, Atlanta, GA, USA; Center for Clinical and Translational Research, Emory University and Children's Healthcare of Atlanta, Atlanta, GA, USA.
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