SARSCoV-2 serostatus amongst vaccinated employees at a pediatric hospital system

Sridevi Devaraj, Izmarie Poventud-Fuentes, Matthew Girotto, Jermaine Monroe, Julie Boom, George Delclos, James Versalovic

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


To gain insights on the heterogeneity of immune responses to vaccination against SARS-CoV-2 and to identify factors that could make individuals vulnerable to infection due to lack of response to vaccination, our hospital started offering free voluntary post-antibody testing against the spike protein IgG for all fully vaccinated employees. Post-vaccination response against SARS-CoV-2 was assessed using the FDA-EUA approved VITROS anti-SARS-CoV-2 IgG immunometric assay specific to the spike protein. Out of a total of 3266 antibody tests performed in fully vaccinated Texas Children's, 99.4% had a positive antibody response to the spike protein. From the 21 employees (0.6%) that had a negative response, 66.7% reported taking immunosuppressive drugs and/or biologics. Our data shows that most of the employees tested at our institution mounted an immune response to the immunogen in the vaccine. Post-vaccination antibody testing against SARS-CoV-2 can provide useful information to guide decisions about future vaccine doses.

Original languageEnglish (US)
Article numbere00261
Pages (from-to)e00261
JournalPractical Laboratory Medicine
StatePublished - Jan 2022


  • Antibody
  • Employee
  • SARS-CoV-2
  • Serology
  • Vaccine

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Clinical Biochemistry


Dive into the research topics of 'SARSCoV-2 serostatus amongst vaccinated employees at a pediatric hospital system'. Together they form a unique fingerprint.

Cite this