Testing Hub

All State Comparison of Testing Efforts

Through up-to-date visuals, track how testing volume, positivity, and proportion give a sense of whether the occurrence of new cases is slowing or growing.

Cases, Deaths, and Testing in All 50 States

U.S.: Are We Testing Enough?

This graph shows the total number of cases, deaths, and tests performed in each state per 100,000 people. By comparing the rate of cases and deaths, we can get a sense of how COVID-19 has affected each state. Since confirmed case numbers may be dependent on how much testing a state is doing, it is also important to see how many tests have occurred in each state. If people who are infected cannot get tested, they will not be counted as a confirmed case in the state’s data.

This page was last updated on Thursday, May 28, 2020 at 11:45 PM EDT.

StateTestsConfirmed CasesDeaths
Alabama410233812.1
Alaska6505571.4
Arizona282924912.0
Arkansas39452174.1
California452726210.1
Colorado286444124.9
Connecticut65921163107.1
Delaware587394835.7
District of Columbia6195120964.5
Florida446825011.1
Georgia422743018.8
Hawaii3649461.2
Idaho25011584.7
Illinois651490940.7
Indiana362149430.9
Iowa452958916.0
Kansas29023227.4
Kentucky40752069.2
Louisiana845183358.8
Maine34121646.3
Maryland454982340.2
Massachusetts8147137596.2
Michigan504756053.7
Minnesota401440917.4
Mississippi524048123.2
Missouri279221211.6
Montana3464461.6
Nebraska48196878.4
Nevada432327213.4
New Hampshire483632417.1
New Jersey76991764128.1
New Mexico856835116.0
New York96041877151.1
North Carolina36132488.4
North Dakota89803267.5
Ohio308029017.9
Oklahoma46261598.2
Oregon2855983.6
Pennsylvania334158042.0
Puerto Rico1091094.1
Rhode Island13276137164.0
South Carolina35852129.2
South Dakota44245436.1
Tennessee61453205.3
Texas30422105.6
Utah64382823.4
Vermont49741568.8
Virginia337348615.7
Washington445627614.7
West Virginia50011074.1
Wisconsin40892929.5
Wyoming40091522.6
Tests: per 100k pop.
Confirmed Cases: per 100k pop
Deaths: per 100k pop

It is important to track the testing that states are doing to diagnose people with COVID-19 infection in order to gauge the spread of COVID-19 in the U.S. and to know whether enough testing is occurring. When states report the number of COVID-19 tests performed, this should include the number of viral tests performed and the number of patients for which these tests were performed. Currently, states may not be distinguishing overall tests administered from the number of individuals who have been tested. This is an important limitation to the data that is available to track testing in the U.S., and states should work to address it.

When states report testing numbers for COVID-19 infection, they should not include serology or antibody tests. Antibody tests are not used to diagnose active COVID-19 infection and they do not provide insights into the number of cases of COVID-19 diagnosed or whether viral testing is sufficient to find infections that are occurring within each state. States that include serology tests within their overall COVID-19 testing numbers are misrepresenting their testing capacity and the extent to which they are working to identify COVID-19 infections within their communities. States that wish to track the number of serology tests being performed should report those numbers separately from viral tests performed to diagnose COVID-19.