Respiratory Syncytial Virus After CAR T-cell therapy: Risk Factors and Outcomes in a Multicenter Retrospective Cohort.

Sotelo-Alva, Maria Isabel; Beyar-Katz, Ofrat; Yan, Judy; Serrat, Silvia Escribano; Boardman, Alexander; Geva, Mika; Gomez-Llobell, Marina; Halloun, Jabour et al. · Clin Infect Dis · 2026

retrospective_cohort · Level III

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Abstract

Among 667 CAR-T recipients, the 2-year cumulative incidence of RSV was 7%, with 29% of diagnosed cases progressing to LRTI. Older age and lymphopenia were associated with severity. Most infections (74%) occurred beyond day +100 (median 8 months). No RSV-attributable deaths occurred. Clinical vigilance is warranted, especially during RSV season.