April 2021 Summary Statistics

I will present some summary statistics which can explain the trends that we observed during the month of April 2021. This complements similar reports from March, April, May, June, July, August, September, October, November, and December 2020, and January, February, and March 2021.


Total Case Growth
Total cases on 31 March: 387,277
Total cases on 30 April: 411,405
Total case increase: 24,128

Smallest daily case increase: 460 (26 April)
Largest daily case increase: 1,251 (1 April)

Average daily increase: 804.27





Total Fatality Growth
Total fatalities on 31 March: 6,635
Total fatalities on 30 April: 6,892
Total fatality increase: 257

Smallest daily fatality increase: 2 (12 & 22 April)
Largest daily fatality increase: 16 (9 April)

Average daily increase: 8.57




State-Level Shares for April 2021

Median share of regional cases for Maryland: 44%
Median share of regional fatalities for Maryland: 50%
Maryland share of DC metropolitan-area population: 42%

Median share of regional cases for DC: 12%
Median share of regional fatalities for DC: 16%
DC share of DC metropolitan-area population: 13%

Median share of regional cases for Virginia: 44%
Median share of regional fatalities for Virginia: 34%
Virginia share of DC metropolitan-area population: 45%




Population-adjusted statistics, per 1,000 of population (data as of 30 April)
MD cases: 76.805
MD fatalities: 1.465

DC cases: 68.047
DC fatalities: 1.574

VA cases: 71.722
VA fatalities: 0.912























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