Penn researchers identify viral products that trigger immune response against RSV infection

Almost all human beings are exposed to the respiratory syncytial virus, or RSV, before their second birthdays. For most, the symptoms mimic those of the common cold: runny nose, coughing, sneezing, fever. But in some very young infants -- and some older adults -- the disease can be serious, causing respiratory problems that require hospitalization and increase the risk of developing asthma later in life.

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