This image shows airway co-exposure to cytomegalovirus and environmental antigen sensitizes for allergic airway disease Credit: Lemmermann NAW and Reddehase MJ 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 Pathogensby Rafaela Holtappels from the University Medical Center of the...