What viral pathogen acCounts for 50% to 80% of all bronchiolitis cases

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Respiratory syncytial virus (RSV) is responsible for 50% to 80% of all bronchiolitis cases, making it the most common viral pathogen causing bronchiolitis. Human metapneumovirus (HMPV) is also a common cause of bronchiolitis, but RSV is more prevalent. The other options listed can cause respiratory illnesses, but they are not as frequently associated with bronchiolitis.

What Viral Pathogen AcCounts for 50% to 80% of All