39 Surveillance of Severe Acute Respiratory Infections 2 Mean count per week Year Contact and droplet precautions ICD-10 RT-PCR 2017 2.3 9.7 9.1 2018 4.5 10.2 15.1 2019 3.9 7.7 15.3 2020 9.4 14.7 43.2 2021 34.5 18.2 69.6 2022 26.9 11.0 60.2 2023 23.4 9.0 46.4 Supplementary Table 1. Mean number of registrations per week for each surveillance indicator, for each year of the study RT−PCR tests performed 4363 Contact and droplet precautions registered 193 ICD−10 codes registered 239 2239 257 445 750 Supplementary Figure 4: Overlap between the presence of the different surveillance indicators in the third timeperiod (week 1, 2021 - week 18, 2023).
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