Abstract
The influenza Sentinel surveillance system is a source of valuable data about the dynamics of epidemic seasons in Poland. During the epidemic season 2016/2017, more than 1,000 samples were examined, of which 48% were positive for influenza diagnosis. The predominance of influenza A/H3N2/ was confirmed. Influenza B viruses were noted in only 1% of the samples tested. After the analysis in age groups, the highest number of positive samples was observed in the group of 26-44years. Infections caused by influenza-like viruses were confirmed only in 3% of cases. The Sentinel surveillance system makes it possible to evaluate the spread of the influenza virus in each epidemic season.
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