| http://www.w3.org/ns/prov#value | - Most of countries reported a lower influenza activity[10, 11], and some countries such as Spain, England, and Taiwan reported a shift in age distribution and severity.[12-14]There were several published studies evaluating the impact of A(H1N1)pdm09; however, only few of them were population-based multiyear surveillance.[15, 16] We have established a community-based, prospective surveillance for ch
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