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.
** Higher estimates from a range.
Citation formats
Reported vs extrapolated prevalence of COVID-19, select locations, as of April 2020
In a , 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.
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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 ÌÇÐÄÆƽâ°æ. Retrieved July 22, 2026, from /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. ÌÇÐÄÆƽâ°æ. Accessed July 22, 2026. /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*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 22, 2026. /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*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 13 May 2020, /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* ÌÇÐÄÆƽâ°æ, /statistics/1118083/covid19-reported-and-extrapolated-prevalence/ (last visited July 22, 2026)
Reported and extrapolated prevalence of COVID-19 in select locations worldwide as of April 29, 2020* [Graph], McKinsey & Company, May 13, 2020. [Online]. Available: /statistics/1118083/covid19-reported-and-extrapolated-prevalence/
