Speaking about illness, what's in a name?
It won't come as a great surprise to pediatricians that respiratory syncytial virus (RSV) isn't the only viral cause of winter respiratory tract infection in infants. There have always been patients with upper airway congestion, wheezing, and even apparent viral pneumonia who appear in the midst of, or on the edges of, RSV season, but whose rapid antigen test doesn't support a diagnosis of RSV.
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