Cytomegalovirus (CMV) infection can convert a harmless, inhaled protein antigen into an allergen, according to a study published March 7 in the open-access journal PLOS Pathogens by Rafaela Holtappels from the University Medical Center of the Johannes Gutenberg-University Mainz, and colleagues. According to the authors, the findings suggest that CMV airway infection significantly enlarges the spectrum of potential environmental inducers of allergic airway disease.

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