Global Estimates

World risk map with current ratio of active infectious cases (*)

(Updated daily)

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Estimates of active infectious cases per country (*)

(Updated daily)

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(*) Source of data on confirmed cases and fatalities: European Centre for Disease Prevention and Control. The estimates of total and undetected active cases are computed as described in Estimating active cases of COVID-19: The unknown matters.

Cumulative COVID-19 cases estimates obtained by CoronaSurveys (3)

(Updated daily)

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Cumulative COVID-19 cases estimates per country (1, 2, 3)

(Updated daily)

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More Data and Estimates

All the collected data and other estimates can be found in the project GitHub repository at https://github.com/GCGImdea/coronasurveys/tree/master/data.

Data Sources and Computation

Source of data on confirmed cases and deaths: European Centre for Disease Prevention and Control.

(1) CoronaSurveys estimates using the cCFR-based technique described in Section 3.1 of CoronaSurveys: Using Surveys with Indirect Reporting to Estimate the Incidence and Evolution of Epidemics.. Based on Hiroshi Nishiura et al. Early Epidemiological Assessment of the Virulence of Emerging Infectious Diseases: A Case Study of an Influenza Pandemic. Plos One. August 31, 2009. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0006852.

(2) CoronaSurveys estimates using the Country based approach (using 30 responses) described in Section 2.2 of CoronaSurveys: Using Surveys with Indirect Reporting to Estimate the Incidence and Evolution of Epidemics.. (CI-L, CI-H) is the 95% confidence interval computed as described there. Corresponds to the latest date with sufficient cumulative number of survey responses. The label “undefined” is used when there are not enough survey responses to compute estimates.

(3) CoronaSurveys estimates using the Region based approach (using 300 responses) described in Section 2.2 of CoronaSurveys: Using Surveys with Indirect Reporting to Estimate the Incidence and Evolution of Epidemics.. (CI-L, CI-H) is the 95% confidence interval computed as described there. Corresponds to the latest date with sufficient cumulative number of survey responses. The label “undefined” is used when there are not enough survey responses to compute estimates.

(4) The ratio of active infectious cases is estimated as described in Estimating active cases of COVID-19: The unknown matters.

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