26 states where COVID-19 is spreading fastest, slowest: Nov. 30

Oregon has the highest COVID-19 reproduction rate, while Illinois and South Dakota have the lowest, according to rt.live.

Rt.live is a website that calculates the rate at which the virus is spreading. Measured by the average number of people who become sick from an infectious person, the site tracks the effective reproduction rate (Rt) of COVID-19 infections. If the value is less than one, the spread of the disease is slowing. The higher the Rt number, the worse the spread.

Editor's note: This list contains ties and is based on data last updated Nov. 29.

13 states with fastest spread of COVID-19

1. Oregon — 1.63

2. New Hampshire — 1.31

3. Washington — 1.24

4. Arizona — 1.16

    Maine — 1.16

5. Kentucky — 1.15

6. Louisiana — 1.13

7. New Mexico — 1.12

    Ohio — 1.12

8. California — 1.11

    New York — 1.11

9. Alaska — 1.10

    Massachusetts — 1.10

13 states with slowest spread of COVID-19

1. Illinois — 0.91

    South Dakota — 0.91

3. Iowa — 0.92

4. North Dakota — 0.94

5. Mississippi — 0.95

    Texas — 0.95

6. Nebraska — 0.96

7. Minnesota — 0.97

    Wisconsin — 0.97

8. Florida — 0.98

    Montana — 0.98

    South Carolina — 0.98

9. Oklahoma — 0.99

More articles on public health:
Number of COVID-19 hospitalizations, state by state: Nov. 30
Antibody levels decline after 2 months, CDC finds
US sees 2 million COVID-19 cases in 2 weeks

ior's note: This list contains ties. These rates were captured July 7; the most recent update made to the Rt.live site was July 6.

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