Gout & crystal arthritis

COVID‐19 Vaccination and Gout Flare Risk in Patients With Infrequent or Frequent Flares: A Prospective Cohort Study

Arthritis Care Res (Hoboken)Published Prospective cohort study

Authors' conclusion

COVID-19 vaccination was associated with increased early gout flares only in patients with previously infrequent flares.

Study context

Population
COVID-19 vaccine-naive gout patients managed with ULT between February and June 2021248 received two-dose vaccination
Participants
530 patients
Exposure
COVID-19 vaccination vs no vaccination, in patients with infrequent or frequent gout flares
  • Infrequent flaresn = 308
  • Frequent flaresn = 222
Outcome
Cumulative gout flare incidence
Follow-up
12 weeks
Methodological detailsvoluntary vaccination, multivariable analyses
  • Voluntary vaccination
  • Multivariable analyses

Main finding

As reported in the abstract

Cumulative flare incidence, vaccinated vs unvaccinated

Infrequent flares: vaccinated vs unvaccinated

26.1% vs 10.8%

P = 0.001

Frequent flares: vaccinated vs unvaccinated

60.4% vs 65.5%

P = 0.428

Observational data: associations, not effects.

Further findings

Independent risk factors for flare, infrequent flares (multivariable)

OR (95% CI)P value
Vaccination2.82 (1.50–5.30)P = 0.001
Flare in the preceding year1.95 (1.03–3.71)P = 0.04
BMI1.09 (1.01–1.19)P = 0.03

Independent risk factor for flare, frequent flares (multivariable)

OR (95% CI)P value
Baseline serum urate (mg/dl)1.23 (1.05–1.45)P = 0.012

Flare incidence in final 4 weeks of observation, infrequent flares: vaccinated vs unvaccinated

Decreased significantly only in the vaccinated infrequent flare group
4.3% vs 12.0%, P = 0.017

Original publication

COVID‐19 Vaccination and Gout Flare Risk in Patients With Infrequent or Frequent Flares: A Prospective Cohort Study. Arthritis Care Res (Hoboken). Published 9 November 2023. doi:10.1002/acr.25215

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