Antibiotic Exposure Prior to Respiratory Viral Infection Is Associated with Progression to Lower Respiratory Tract Disease in Allogeneic Hematopoietic Cell Transplant Recipients

•We studied effect of antibiotic exposure on respiratory virus disease post-transplant.•Antibiotic exposure pre- and post-transplant was common before viral onset.•Cumulative antibiotic exposure was a risk factor for respiratory disease progression. Cumulative incidence of lower respiratory tract di...

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