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Meta-analysis of COVID-19 positivity rates in workplaces (14 hospitals and 1 nursing home) following the implementation of combined IPC measures between January and September 2020. Exact interventions implemented by each study are detailed in Table 5. Note that two studies ([64,73]) were classified under the ”Outbreak Investigations and Response” category in Table 4. We have chosen to include them in the Combined Measures meta-analysis due to their comprehensive nature.
