The first case of the novel coronavirus in the United States was confirmed on Jan. 21, 2020 — a healthy 35-year-old nonsmoker who had just returned to Washington state from Wuhan, China. Since then, the U.S. has become the epicenter of the pandemic, reporting more total cases than any other country. As of mid-day on April 10, more than 470,000 people in the U.S. had been diagnosed with COVID-19, comprising about 27% of the more than 1.6 million cases worldwide.
Because each state’s outbreak began at a different time, as well as due to such variables as the extent of testing, integrity of data reporting, population density, and strength of physical distancing efforts, the virus has not spread uniformly across the states. More recently, the growth in the numbers of confirmed cases has started to spike in some states while it has started to slow in others.
Washington became the first state to report a COVID-19 case on Jan. 21. West Virginia was the last state to report its first case, on March 17. All states are now reporting cases, and every state except for Wyoming is reporting deaths. Only about two-thirds of states are reporting testing practices.
Population density is a clear factor in how fast the disease spreads, and three of the densest states — New York, New Jersey, and Connecticut — are among the states that have reported the largest increases since their first cases were reported.
While not always the case, the states with the slowest rate of spread are in general the states that reported their first cases earlier. The swift implementation of stay-at-home orders also appears to have had an impact on the rate of spread.
24/7 Wall St. used the latest data compiled by the New York Times Daily to calculate the percentage increase in reported confirmed COVID-19 cases over the seven days through April 9 — the latest day for which data is available.
Click here to see the states where the virus is growing the fastest right now
Source: David Ryder / Getty Images News via Getty Images
50. Washington
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +45.9% (6,585 to 9,608)
> Confirmed COVID-19 rate as of Apr. 9: 127.5 per 100,000 — 10th highest
> Population density: 105.7 people per square mile — 23rd highest
> Days between 1st case (1/21/2020) and beginning of statewide stay-at-home order (3/23/2020): 62
> COVID-19 related deaths in 7 days ending Apr. 9: 206 (Washington total: 478)
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49. Montana
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +46.9% (241 to 354)
> Confirmed COVID-19 rate as of Apr. 9: 33.3 per 100,000 — 7th lowest
> Population density: 7.2 people per square mile — 3rd lowest
> Days between 1st case (3/13/2020) and beginning of statewide stay-at-home order (3/28/2020): 15
> COVID-19 related deaths in 7 days ending Apr. 9: 1 (Montana total: 6)
Source: DenisTangneyJr / Getty Images
48. Maine
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +48.9% (376 to 560)
> Confirmed COVID-19 rate as of Apr. 9: 41.8 per 100,000 — 16th lowest
> Population density: 37.8 people per square mile — 12th lowest
> Days between 1st case (3/12/2020) and beginning of statewide stay-at-home order (4/2/2020): 21
> COVID-19 related deaths in 7 days ending Apr. 9: 9 (Maine total: 16)
47. Idaho
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +51.9% (891 to 1,353)
> Confirmed COVID-19 rate as of Apr. 9: 77.1 per 100,000 — 19th highest
> Population density: 21.0 people per square mile — 7th lowest
> Days between 1st case (3/13/2020) and beginning of statewide stay-at-home order (3/25/2020): 12
> COVID-19 related deaths in 7 days ending Apr. 9: 15 (Idaho total: 24)
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Source: Jason Kempin / Getty Images News via Getty Images
46. Tennessee
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +55.3% (2,869 to 4,456)
> Confirmed COVID-19 rate as of Apr. 9: 65.8 per 100,000 — 21st highest
> Population density: 160.6 people per square mile — 17th highest
> Days between 1st case (3/5/2020) and beginning of statewide stay-at-home order (3/31/2020): 26
> COVID-19 related deaths in 7 days ending Apr. 9: 63 (Tennessee total: 95)
Source: navymedicine / Flickr
45. Hawaii
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +55.5% (283 to 440)
> Confirmed COVID-19 rate as of Apr. 9: 31.0 per 100,000 — 4th lowest
> Population density: 129.9 people per square mile — 20th highest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (3/25/2020): 19
> COVID-19 related deaths in 7 days ending Apr. 9: 4 (Hawaii total: 6)
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44. Wyoming
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +56.2% (153 to 239)
> Confirmed COVID-19 rate as of Apr. 9: 41.4 per 100,000 — 15th lowest
> Population density: 5.9 people per square mile — 2nd lowest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: none reported in Wyoming
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43. Alaska
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +59.6% (146 to 233)
> Confirmed COVID-19 rate as of Apr. 9: 31.6 per 100,000 — 6th lowest
> Population density: 1.1 people per square mile — the lowest
> Days between 1st case (3/12/2020) and beginning of statewide stay-at-home order (3/28/2020): 16
> COVID-19 related deaths in 7 days ending Apr. 9: 3 (Alaska total: 5)
42. Oregon
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +59.9% (826 to 1,321)
> Confirmed COVID-19 rate as of Apr. 9: 31.5 per 100,000 — 5th lowest
> Population density: 42.6 people per square mile — 13th lowest
> Days between 1st case (2/28/2020) and beginning of statewide stay-at-home order (3/23/2020): 24
> COVID-19 related deaths in 7 days ending Apr. 9: 23 (Oregon total: 44)
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Source: Michael Ciaglo / Getty Images News via Getty Images
41. Colorado
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +66.4% (3,728 to 6,202)
> Confirmed COVID-19 rate as of Apr. 9: 108.9 per 100,000 — 12th highest
> Population density: 54.7 people per square mile — 14th lowest
> Days between 1st case (3/5/2020) and beginning of statewide stay-at-home order (3/26/2020): 21
> COVID-19 related deaths in 7 days ending Apr. 9: 131 (Colorado total: 227)
Source: Scott Olson / Getty Images News via Getty Images
40. Wisconsin
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +66.8% (1,730 to 2,885)
> Confirmed COVID-19 rate as of Apr. 9: 49.6 per 100,000 — 22nd lowest
> Population density: 88.8 people per square mile — 24th lowest
> Days between 1st case (2/5/2020) and beginning of statewide stay-at-home order (3/25/2020): 49
> COVID-19 related deaths in 7 days ending Apr. 9: 79 (Wisconsin total: 116)
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39. Minnesota
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +67.4% (742 to 1,242)
> Confirmed COVID-19 rate as of Apr. 9: 22.1 per 100,000 — the lowest
> Population density: 64.5 people per square mile — 20th lowest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (3/27/2020): 21
> COVID-19 related deaths in 7 days ending Apr. 9: 32 (Minnesota total: 50)
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38. Arkansas
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +67.8% (683 to 1,146)
> Confirmed COVID-19 rate as of Apr. 9: 38.0 per 100,000 — 11th lowest
> Population density: 56.7 people per square mile — 17th lowest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 9 (Arkansas total: 21)
Source: Ethan Miller / Getty Images News via Getty Images
37. Nevada
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +68.4% (1,458 to 2,456)
> Confirmed COVID-19 rate as of Apr. 9: 80.9 per 100,000 — 17th highest
> Population density: 27.4 people per square mile — 9th lowest
> Days between 1st case (3/5/2020) and beginning of statewide stay-at-home order (4/1/2020): 27
> COVID-19 related deaths in 7 days ending Apr. 9: 44 (Nevada total: 82)
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Source: sakakawea7 / Getty Images
36. North Dakota
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +69.2% (159 to 269)
> Confirmed COVID-19 rate as of Apr. 9: 35.4 per 100,000 — 10th lowest
> Population density: 10.8 people per square mile — 4th lowest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 2 (North Dakota total: 5)
35. New Hampshire
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +71.0% (479 to 819)
> Confirmed COVID-19 rate as of Apr. 9: 60.4 per 100,000 — 23rd highest
> Population density: 145.1 people per square mile — 19th highest
> Days between 1st case (3/2/2020) and beginning of statewide stay-at-home order (3/27/2020): 25
> COVID-19 related deaths in 7 days ending Apr. 9: 16 (New Hampshire total: 21)
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34. New York
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +72.4% (92,770 to 159,937)
> Confirmed COVID-19 rate as of Apr. 9: 818.4 per 100,000 — the highest
> Population density: 358.2 people per square mile — 7th highest
> Days between 1st case (3/1/2020) and beginning of statewide stay-at-home order (3/22/2020): 21
> COVID-19 related deaths in 7 days ending Apr. 9: 4,414 (New York total: 7,067)
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33. South Carolina
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +79.7% (1,554 to 2,792)
> Confirmed COVID-19 rate as of Apr. 9: 54.9 per 100,000 — 25th lowest
> Population density: 158.8 people per square mile — 18th highest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (4/6/2020): 31
> COVID-19 related deaths in 7 days ending Apr. 9: 36 (South Carolina total: 67)
Source: Handout / Getty Images News via Getty Images
32. California
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +80.4% (11,190 to 20,191)
> Confirmed COVID-19 rate as of Apr. 9: 51.0 per 100,000 — 24th lowest
> Population density: 241.7 people per square mile — 11th highest
> Days between 1st case (1/25/2020) and beginning of statewide stay-at-home order (3/19/2020): 54
> COVID-19 related deaths in 7 days ending Apr. 9: 301 (California total: 548)
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Source: George Frey / Getty Images News via Getty Images
31. Utah
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +84.4% (1,074 to 1,980)
> Confirmed COVID-19 rate as of Apr. 9: 62.6 per 100,000 — 22nd highest
> Population density: 37.2 people per square mile — 11th lowest
> Days between 1st case (2/25/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 6 (Utah total: 13)
30. Vermont
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +85.8% (338 to 628)
> Confirmed COVID-19 rate as of Apr. 9: 100.3 per 100,000 — 15th highest
> Population density: 65.1 people per square mile — 21st lowest
> Days between 1st case (3/7/2020) and beginning of statewide stay-at-home order (3/24/2020): 17
> COVID-19 related deaths in 7 days ending Apr. 9: 6 (Vermont total: 23)
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29. Florida
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +86.9% (9,000 to 16,819)
> Confirmed COVID-19 rate as of Apr. 9: 79.0 per 100,000 — 18th highest
> Population density: 323.9 people per square mile — 8th highest
> Days between 1st case (3/1/2020) and beginning of statewide stay-at-home order (4/3/2020): 33
> COVID-19 related deaths in 7 days ending Apr. 9: 226 (Florida total: 370)
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Source: Christian Petersen / Getty Images News via Getty Images
28. Arizona
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +88.6% (1,600 to 3,018)
> Confirmed COVID-19 rate as of Apr. 9: 42.1 per 100,000 — 17th lowest
> Population density: 62.9 people per square mile — 19th lowest
> Days between 1st case (1/26/2020) and beginning of statewide stay-at-home order (3/31/2020): 65
> COVID-19 related deaths in 7 days ending Apr. 9: 54 (Arizona total: 89)
27. Ohio
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +89.9% (2,902 to 5,512)
> Confirmed COVID-19 rate as of Apr. 9: 47.2 per 100,000 — 19th lowest
> Population density: 260.8 people per square mile — 10th highest
> Days between 1st case (3/9/2020) and beginning of statewide stay-at-home order (3/23/2020): 14
> COVID-19 related deaths in 7 days ending Apr. 9: 132 (Ohio total: 213)
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Source: chrisp0 / Getty Images
26. Oklahoma
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +91.6% (879 to 1,684)
> Confirmed COVID-19 rate as of Apr. 9: 42.7 per 100,000 — 18th lowest
> Population density: 56.4 people per square mile — 16th lowest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 46 (Oklahoma total: 80)
25. Mississippi
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +92.0% (1,177 to 2,260)
> Confirmed COVID-19 rate as of Apr. 9: 75.7 per 100,000 — 20th highest
> Population density: 61.7 people per square mile — 18th lowest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order (4/3/2020): 23
> COVID-19 related deaths in 7 days ending Apr. 9: 50 (Mississippi total: 76)
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Source: Jamie Squire / Getty Images News via Getty Images
24. Missouri
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +93.0% (1,834 to 3,539)
> Confirmed COVID-19 rate as of Apr. 9: 57.8 per 100,000 — 25th highest
> Population density: 87.9 people per square mile — 23rd lowest
> Days between 1st case (3/7/2020) and beginning of statewide stay-at-home order (4/6/2020): 30
> COVID-19 related deaths in 7 days ending Apr. 9: 70 (Missouri total: 94)
Source: Patrick Smith / Getty Images News via Getty Images
23. North Carolina
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +96.6% (1,857 to 3,651)
> Confirmed COVID-19 rate as of Apr. 9: 35.2 per 100,000 — 9th lowest
> Population density: 192.9 people per square mile — 14th highest
> Days between 1st case (3/3/2020) and beginning of statewide stay-at-home order (3/30/2020): 27
> COVID-19 related deaths in 7 days ending Apr. 9: 57 (North Carolina total: 74)
Source: Gregory Shamus / Getty Images News via Getty Images
22. Michigan
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +98.1% (10,791 to 21,375)
> Confirmed COVID-19 rate as of Apr. 9: 213.8 per 100,000 — 6th highest
> Population density: 103.4 people per square mile — 24th highest
> Days between 1st case (3/10/2020) and beginning of statewide stay-at-home order (3/24/2020): 14
> COVID-19 related deaths in 7 days ending Apr. 9: 659 (Michigan total: 1,076)
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Source: Kena Betancur / Getty Images News via Getty Images
21. New Jersey
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +99.4% (25,590 to 51,027)
> Confirmed COVID-19 rate as of Apr. 9: 572.8 per 100,000 — 2nd highest
> Population density: 1021.3 people per square mile — the highest
> Days between 1st case (3/4/2020) and beginning of statewide stay-at-home order (3/21/2020): 17
> COVID-19 related deaths in 7 days ending Apr. 9: 1,161 (New Jersey total: 1,700)
20. Louisiana
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +99.8% (9,150 to 18,283)
> Confirmed COVID-19 rate as of Apr. 9: 392.3 per 100,000 — 3rd highest
> Population density: 89.0 people per square mile — 25th lowest
> Days between 1st case (3/9/2020) and beginning of statewide stay-at-home order (3/23/2020): 14
> COVID-19 related deaths in 7 days ending Apr. 9: 392 (Louisiana total: 702)
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19. Georgia
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +99.9% (5,444 to 10,885)
> Confirmed COVID-19 rate as of Apr. 9: 103.5 per 100,000 — 13th highest
> Population density: 177.0 people per square mile — 16th highest
> Days between 1st case (3/2/2020) and beginning of statewide stay-at-home order (4/3/2020): 32
> COVID-19 related deaths in 7 days ending Apr. 9: 236 (Georgia total: 412)
Source: Photo by Jamie Squire / Getty Images News via Getty Images
18. Kansas
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +101.4% (554 to 1,116)
> Confirmed COVID-19 rate as of Apr. 9: 38.3 per 100,000 — 12th lowest
> Population density: 35.4 people per square mile — 10th lowest
> Days between 1st case (3/7/2020) and beginning of statewide stay-at-home order (3/30/2020): 23
> COVID-19 related deaths in 7 days ending Apr. 9: 28 (Kansas total: 42)
17. Kentucky
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +102.0% (755 to 1,525)
> Confirmed COVID-19 rate as of Apr. 9: 34.1 per 100,000 — 8th lowest
> Population density: 110.6 people per square mile — 21st highest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (3/26/2020): 20
> COVID-19 related deaths in 7 days ending Apr. 9: 50 (Kentucky total: 84)
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Source: tabor-roeder / Flickr
16. Iowa
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +106.8% (614 to 1,270)
> Confirmed COVID-19 rate as of Apr. 9: 40.2 per 100,000 — 14th lowest
> Population density: 56.1 people per square mile — 15th lowest
> Days between 1st case (3/8/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 16 (Iowa total: 27)
15. Indiana
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +109.0% (3,039 to 6,351)
> Confirmed COVID-19 rate as of Apr. 9: 94.9 per 100,000 — 16th highest
> Population density: 183.7 people per square mile — 15th highest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (3/24/2020): 18
> COVID-19 related deaths in 7 days ending Apr. 9: 168 (Indiana total: 246)
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14. Massachusetts
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +111.3% (8,966 to 18,941)
> Confirmed COVID-19 rate as of Apr. 9: 274.4 per 100,000 — 4th highest
> Population density: 654.0 people per square mile — 3rd highest
> Days between 1st case (2/1/2020) and beginning of statewide stay-at-home order (3/24/2020): 52
> COVID-19 related deaths in 7 days ending Apr. 9: 349 (Massachusetts total: 503)
Source: Scott Olson / Getty Images News via Getty Images
13. Illinois
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +113.4% (7,695 to 16,422)
> Confirmed COVID-19 rate as of Apr. 9: 128.9 per 100,000 — 9th highest
> Population density: 220.0 people per square mile — 12th highest
> Days between 1st case (1/24/2020) and beginning of statewide stay-at-home order (3/21/2020): 57
> COVID-19 related deaths in 7 days ending Apr. 9: 369 (Illinois total: 534)
12. Nebraska
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +117.6% (273 to 594)
> Confirmed COVID-19 rate as of Apr. 9: 30.8 per 100,000 — 3rd lowest
> Population density: 24.9 people per square mile — 8th lowest
> Days between 1st case (2/17/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 9 (Nebraska total: 15)
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Source: alabama_extension / Flickr
11. Alabama
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +123.5% (1,270 to 2,838)
> Confirmed COVID-19 rate as of Apr. 9: 58.1 per 100,000 — 24th highest
> Population density: 93.2 people per square mile — 25th highest
> Days between 1st case (3/13/2020) and beginning of statewide stay-at-home order (4/4/2020): 22
> COVID-19 related deaths in 7 days ending Apr. 9: 46 (Alabama total: 78)
Source: Tom Pennington / Getty Images News via Getty Images
10. Texas
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +133.0% (4,880 to 11,372)
> Confirmed COVID-19 rate as of Apr. 9: 39.6 per 100,000 — 13th lowest
> Population density: 106.9 people per square mile — 22nd highest
> Days between 1st case (2/12/2020) and beginning of statewide stay-at-home order (4/2/2020): 50
> COVID-19 related deaths in 7 days ending Apr. 9: 149 (Texas total: 228)
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Source: Drew Angerer / Getty Images News via Getty Images
9. Virginia
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +136.9% (1,706 to 4,042)
> Confirmed COVID-19 rate as of Apr. 9: 47.5 per 100,000 — 21st lowest
> Population density: 199.1 people per square mile — 13th highest
> Days between 1st case (3/7/2020) and beginning of statewide stay-at-home order (3/30/2020): 23
> COVID-19 related deaths in 7 days ending Apr. 9: 68 (Virginia total: 109)
8. West Virginia
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +141.5% (217 to 524)
> Confirmed COVID-19 rate as of Apr. 9: 29.0 per 100,000 — 2nd lowest
> Population density: 74.5 people per square mile — 22nd lowest
> Days between 1st case (3/17/2020) and beginning of statewide stay-at-home order (3/24/2020): 7
> COVID-19 related deaths in 7 days ending Apr. 9: 03 (West Virginia total: 5)
7. New Mexico
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +145.4% (403 to 989)
> Confirmed COVID-19 rate as of Apr. 9: 47.2 per 100,000 — 20th lowest
> Population density: 17.2 people per square mile — 6th lowest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order (3/24/2020): 13
> COVID-19 related deaths in 7 days ending Apr. 9: 10 (New Mexico total: 17)
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Source: John Moore / Getty Images News via Getty Images
6. Connecticut
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +155.9% (3,824 to 9,784)
> Confirmed COVID-19 rate as of Apr. 9: 273.9 per 100,000 — 5th highest
> Population density: 644.5 people per square mile — 4th highest
> Days between 1st case (3/8/2020) and beginning of statewide stay-at-home order (3/23/2020): 15
> COVID-19 related deaths in 7 days ending Apr. 9: 268 (Connecticut total: 380)
Source: Jeff Swensen / Getty Images News via Getty Images
5. Pennsylvania
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +162.0% (7,016 to 18,379)
> Confirmed COVID-19 rate as of Apr. 9: 143.5 per 100,000 — 8th highest
> Population density: 278.1 people per square mile — 9th highest
> Days between 1st case (3/6/2020) and beginning of statewide stay-at-home order (4/1/2020): 26
> COVID-19 related deaths in 7 days ending Apr. 9: 254 (Pennsylvania total: 344)
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4. Rhode Island
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +162.9% (657 to 1,727)
> Confirmed COVID-19 rate as of Apr. 9: 163.3 per 100,000 — 7th highest
> Population density: 684.3 people per square mile — 2nd highest
> Days between 1st case (3/1/2020) and beginning of statewide stay-at-home order (3/28/2020): 27
> COVID-19 related deaths in 7 days ending Apr. 9: 31 (Rhode Island total: 43)
Source: Win McNamee / Getty Images News via Getty Images
3. Maryland
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +165.3% (2,331 to 6,185)
> Confirmed COVID-19 rate as of Apr. 9: 102.4 per 100,000 — 14th highest
> Population density: 487.1 people per square mile — 5th highest
> Days between 1st case (3/5/2020) and beginning of statewide stay-at-home order (3/30/2020): 25
> COVID-19 related deaths in 7 days ending Apr. 9: 103 (Maryland total: 139)
Source: DenisTangneyJr / Getty Images
2. South Dakota
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +170.9% (165 to 447)
> Confirmed COVID-19 rate as of Apr. 9: 50.7 per 100,000 — 23rd lowest
> Population density: 11.4 people per square mile — 5th lowest
> Days between 1st case (3/10/2020) and beginning of statewide stay-at-home order: No order issued as of April 9
> COVID-19 related deaths in 7 days ending Apr. 9: 5 (South Dakota total: 7)
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1. Delaware
> 7-day increase in confirmed COVID-19 cases as of Apr. 9: +207.6% (393 to 1,209)
> Confirmed COVID-19 rate as of Apr. 9: 125.0 per 100,000 — 11th highest
> Population density: 388.6 people per square mile — 6th highest
> Days between 1st case (3/11/2020) and beginning of statewide stay-at-home order (3/24/2020): 13
> COVID-19 related deaths in 7 days ending Apr. 9: 11 (Delaware total: 23)
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