A study published in Pathology reveals that children under 5 years have more than eightfold higher odds of having influenza co-infections with other respiratory viruses compared to older adults. The retrospective analysis, conducted in two metropolitan health districts in New South Wales, Australia, encompassed 386,283 respiratory specimens from 2018 to 2023, showing a significant rise in influenza activity after pandemic-related measures were lifted. The study also highlighted co-infections, primarily with rhinovirus, and the impact of multiplex PCR assays on testing volumes.
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