Key performance indicators of COVID-19 contact tracing in Belgium from September 2020 to December 2021.

PLoS One · 2023 · PMC10588862 · PMID 37862313

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an increasing trendno p-value reported

For both ‘known’ and ‘new’ index cases, we observed an increasing trend in the number of traced HRC, which may be explained by the relaxation of NPIs over time.

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