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Distribution of invasive pulmonary aspergillosis (IPA; blue) and post–respiratory viral infection (post-RVI) IPA (red), by season, during the period studied. IPA percentages in winter, spring, summer, and autumn were 21%, 23%, 25%, and 31%, respectively, and percentages of post-RVI IPA were 26%, 28%, 20%, and 26%, respectively.
