With over 2.4 million cases of flu-like syndromes, seasonal influenza surveillance ends but without the epidemic ever having started and without any real influenza virus being isolated in Italy. To take stock is the new InfluNet bulletin, coordinated by the Istituto Superiore di Sanità (Iss), the last of the 2020-21 season.
From the data sent by sentinel doctors about the Integrated Influenza Surveillance System, in the 16th week of surveillance (from 19 to 25 April) it appears that the total incidence of flu-like syndromes is equal to 0.85 cases per thousand assisted and the estimated cases compared to the entire Italian population are about 51,000, for a total of about 2,431,000 cases from the start of surveillance. Last year, the flu epidemic had come to an end, having infected over 7.5 million people in Italy, over 5 million more than those seen in the current season. The epidemic curve has always remained below the epidemic threshold from October to today, thanks to the anti-Covid measures that have also reduced the circulation of other respiratory infections.
During the 2020/21 season a total of 6,818 clinical samples were received and analyzed by the various laboratories belonging to the InfluNet network and, among these, none tested positive for the flu virus. Of these, however, 1,470 tested positive for Sars-CoV2.
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