COVID-19 vaccine safety during pregnancy and breastfeeding in women with autoimmune diseases: results from the COVAD study

Rheumatology (Oxford)Published Cross-sectional study

Authors' conclusion

This study provides reassuring insights into the safety of COVID-19 vaccines administered to women with AID during the gestational and post-partum periods

Study context

Population
Pregnant and breastfeeding women with autoimmune diseases (AID), COVAD study6,787 (73.8%) women
Participants
9,201 participants
Exposure
Pregnant and breastfeeding women with AID vs non-pregnant/non-breastfeeding patients and healthy controls (HC)
  • Pregnant AIDn = 40
  • Breastfeeding AIDn = 52
  • Matched non-pregnant/non-breastfeeding AIDn = 262
Outcome
Delayed-onset (>7 days) vaccine-related AE, disease flares and AID-related treatment modifications
Methodological detailsself-administered online survey, age- and disease-matched comparison
  • Self-administered online survey
  • Age- and disease-matched comparison

Main finding

As reported in the abstract

Vaccine-related AE

Overall adverse events (AE)

45% vs 26%

P = 0.01

Pregnant AID

Minor AE

40% vs 25.9%

P = 0.03

Pregnant AID

Major AE

17.5% vs 4.6%

P < 0.01

Pregnant AID

Observational data: associations, not effects.

Further findings

Post-vaccination disease flares

Flare management in pregnant/breastfeeding patients

Pregnant/breastfeeding patients with a flare requiring initiation or change in immunosuppressants, respectively
28.6% and 20%
All pregnant/breastfeeding patients with a flare managed with GC

Original publication

COVID-19 vaccine safety during pregnancy and breastfeeding in women with autoimmune diseases: results from the COVAD study. Rheumatology (Oxford). Published 28 July 2023. doi:10.1093/rheumatology/kead382

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