Our Data Sources:

• Counts of cumulative confirmed COVID-19 cases by date and county or county-equivalent in the U.S. and county populations in the U.S. based on 2019 Census estimates
• #MadewithUSAFacts
• Counts of new confirmed COVID-19 cases by date in the U.S. according to the CDC
• Counts of new confirmed COVID-19 cases by date in the U.S. according to the CDC
• Counts of cumulative confirmed COVID-19 cases by date and county or county-equivalent in the U.S.
• County populations in the U.S. based on 2019 Census estimates
• Distribution of COVID-19 by age group among 2,449 confirmed COVID-19 cases in the U.S.
• Seasonality of the common cold and seasonal influenza in the U.S. by month
• An estimated 78% of coronavirus cases are asymptomatic among 166 Chinese
• The false negative rate of coronavirus RT-PCR testing is up to 29%
• Base rate of a wide range of symptoms among 100,000 random Danes age 20 and above
• Base rate of a wide range of symptoms among 1,000 random Kiwis
• Distribution of COVID-19 symptoms, duration, and severity among 55,924 confirmed cases in China
• Distribution of common cold symptoms based on a comprehensive literature review
• Distribution of common cold symptoms among 116 symptomatic Britts given low doses of 5 different viruses
• Distribution of seasonal influenza symptoms among 2,470 confirmed cases in 231 different locations across North America, Europe, and the Southern Hemisphere
• Seroprevalence of Antibodies to SARS-CoV-2 in 10 Sites in the United States, March 23-May 12, 2020
• U.S. Population by Date based on Census estimates
• U.S. Population by Age Group based on 2018 Census estimates