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. 2024 Aug 5;79(4):1074–1084. doi: 10.1093/cid/ciae364

Table 3.

Unsolicited Adverse Events, Serious Adverse Events, and Potential Immune-Mediated Diseases After RSVPreF3 OA or Placebo Administration (Exposed Population)

Adverse Event 50–59-non-AIR-RSV (N = 383) 50–59-non-AIR-placebo (N = 192) 50–59-AIR-RSV (N = 386) 50–59-AIR-placebo (N = 191) ≥60-RSV (N = 381)
n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI)
Unsolicited AEs within 30 days
 Any 50 13.1 (9.8, 16.8) 26 13.5 (9.0, 19.2) 56 14.5 (11.1, 18.4) 20 10.5 (6.5, 15.7) 62 16.3 (12.7, 20.4)
 Grade 3 4 1.0 (.3, 2.7) 0 0.0 (.0, 1.9) 4 1.0 (.3, 2.6) 4 2.1 (.6, 5.3) 2 .5 (.1, 1.9)
 Related 14 3.7 (2.0, 6.1) 5 2.6 (.9, 6.0) 12 3.1 (1.6, 5.4) 3 1.6 (.3, 4.5) 12 3.1 (1.6, 5.4)
 Grade 3 related 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 1 .3 (.0, 1.5)
 Medically attended 12 3.1 (1.6, 5.4) 10 5.2 (2.5, 9.4) 24 6.2 (4.0, 9.1) 13 6.8 (3.7, 11.4) 27 7.1 (4.7, 10.1)
SAEs and pIMDs within 6 months
 Any SAE 2 .5 (.1, 1.9) 4 2.1 (.6, 5.2) 14 3.6 (2.0, 6.0) 4 2.1 (.6, 5.3) 9 2.4 (1.1, 4.4)
 Any pIMDa 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 4 1.0 (.3, 2.6) 1 .5 (.0, 2.9) 3 .8 (.2, 2.3)
Related or fatal SAEs and related pIMDs until data lock point
 Related SAE 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 1 0.3 (.0, 1.5)
 Fatal SAE 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 0 0.0 (.0, 1.0)
 Related pIMD 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 0 0.0 (.0, 1.0) 0 0.0 (.0, 1.9) 1 0.3 (.0, 1.5)

A grade 3 adverse event (AE) is an AE that prevents normal activity.

Abbreviations: CI, confidence interval; N, number of participants in the exposed population; n (%), number (percentage) of participants in the indicated category; pIMD, potential immune-mediated disease; SAE, serious adverse event; 50–59-AIR-RSV, group of 50–59-year-old participants at increased risk for respiratory syncytial virus (RSV) disease who received RSV prefusion F protein–based vaccine (RSVPreF3 OA); 50–59-non-AIR-RSV, group of 50–59-year-old participants without increased risk for RSV disease who received RSVPreF3 OA; ≥60-RSV, group of ≥60-year-old participants who received RSVPreF3 OA.

aReported pIMDs were new-onset pericarditis, new-onset spondylitis, worsening of pre-existing gouty arthritis, and worsening of pre-existing gout in the 50–59-AIR-RSV group, pericarditis in the 50–59-AIR-placebo group, and new-onset cold-type hemolytic anemia, new-onset polymyalgia rheumatica, and worsening of pre-existing psoriasis in the ≥60-RSV group.