BMJ Open (Feb 2023)

Presence of symptoms 6 weeks after COVID-19 among vaccinated and unvaccinated US healthcare personnel: a prospective cohort study

  • ,
  • Kye E Poronsky,
  • Katherine E Fleming-Dutra,
  • Nicholas M Mohr,
  • Peter C Hou,
  • Elizabeth Krebs,
  • Sharon H Saydah,
  • Wei Xing,
  • Anusha Krishnadasan,
  • Eva González,
  • David A Talan,
  • Gregory J Moran,
  • Karin F Hoth,
  • Shannon Landers,
  • Ian D Plumb,
  • Kari K Harland,
  • Tamara Pilishvili,
  • Zachary Mankoff,
  • John P Haran,
  • Melissa Briggs-Hagen,
  • Eliezer Santos León,
  • Howard A Smithline,
  • Lilly C Lee,
  • Stephen C Lim,
  • Mark T Steele,
  • David G Beiser,
  • Brett Faine,
  • Utsav Nandi,
  • Walter A Schrading,
  • Brian Chinnock,
  • Anne Chipman,
  • Megan Fuentes,
  • Frank LoVecchio,
  • Bradley Clinansmith,
  • Alysia Horcher,
  • Kelli Wallace,
  • Lisandra Uribe,
  • Kavitha Pathmarajah,
  • Dean M Hashimoto,
  • Monica Bahamon,
  • Michelle St Romain,
  • Efrat Kean,
  • Amy Stubbs,
  • Sara Roy,
  • Gregory Volturo,
  • Amanda Higgins,
  • James Galbraith,
  • James C Crosby,
  • Mary Mulrow,
  • Ryan Gierke,
  • Jennifer L Farrar,
  • Yunmi Chung,
  • Anna Yousaf,
  • Jennifer Onukwube Okaro,
  • Glen R Abedi,
  • Sankan Nyanseor,
  • Christopher K Watts

DOI
https://doi.org/10.1136/bmjopen-2022-063141
Journal volume & issue
Vol. 13, no. 2

Abstract

Read online

Objectives Although COVID-19 vaccines offer protection against infection and severe disease, there is limited information on the effect of vaccination on prolonged symptoms following COVID-19. Our objective was to determine differences in prevalence of prolonged symptoms 6 weeks after onset of COVID-19 among healthcare personnel (HCP) by vaccination status, and to assess differences in timing of return to work.Design Cohort analysis of HCP with COVID-19 enrolled in a multicentre vaccine effectiveness study. HCP with COVID-19 between December 2020 and August 2021 were followed up 6 weeks after illness onset.Setting Health systems in 12 US states.Participants HCP participating in a vaccine effectiveness study were eligible for inclusion if they had laboratory-confirmed symptomatic SARS-CoV-2 with mRNA vaccination (symptom onset ≥14 days after two doses) or no prior vaccination. Among 681 eligible participants, 419 (61%) completed a follow-up survey to assess symptoms reported 6 weeks after illness onset.Exposures Two doses of a COVID-19 mRNA vaccine compared with no COVID-19 vaccine.Main outcome measures Prevalence of symptoms 6 weeks after onset of COVID-19 illness and days to return to work.Results Among 419 HCP with COVID-19, 298 (71%) reported one or more COVID-like symptoms 6 weeks after illness onset, with a lower prevalence among vaccinated participants compared with unvaccinated participants (60.6% vs 79.1%; adjusted risk ratio 0.70, 95% CI 0.58 to 0.84). Following their illness, vaccinated HCP returned to work a median 2.0 days (95% CI 1.0 to 3.0) sooner than unvaccinated HCP (adjusted HR 1.37, 95% CI 1.04 to 1.79).Conclusions Receipt of two doses of a COVID-19 mRNA vaccine among HCP with COVID-19 illness was associated with decreased prevalence of COVID-like symptoms at 6 weeks and earlier return to work.