In a McKinsey briefing note on COVID-19, population antibody surveys suggest that official counts of coronavirus are underestimating the true number of cases by a factor of five or more (although in several cases the methodology has been called into question). This statistic shows the reported prevalence and the extrapolated prevalence from sample-based testing in select locations as of April 29, 2020.
Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020*
Germany, Switzerland, United States (California, New York)
Survey time period
As of April 29, 2020
Supplementary notes
Approximate data count for NYC PCR testing: 200 patients who delivered infants at one hospital.
Approximate data counts for antibody testing:
New York State 7,500; Germany 1,000; Geneva 27,000; Los Angeles 800; Santa Clara 3,000.
* New York City and State results not corrected for test accuracy.
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McKinsey & Company. (May 13, 2020). Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020* [Graph]. In Statista. Retrieved July 23, 2024, from https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/
McKinsey & Company. "Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020*." Chart. May 13, 2020. Statista. Accessed July 23, 2024. https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/
McKinsey & Company. (2020). Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020*. Statista. Statista Inc.. Accessed: July 23, 2024. https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/
McKinsey & Company. "Reported and Extrapolated Prevalence of Covid-19 in Select Locations Worldwide as of April 29, 2020*." Statista, Statista Inc., 13 May 2020, https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/
McKinsey & Company, Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020* Statista, https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/ (last visited July 23, 2024)
Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020* [Graph], McKinsey & Company, May 13, 2020. [Online]. Available: https://www.statista.com/statistics/1118083/covid19-reported-and-extrapolated-prevalence/
