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For the above-mentioned countries, looking at the dates when the ratio was last at a minimum and the following first maximum, we get the table below:
| Country | minimum date (ratio) | maximum following minimum (ratio) | days between minimum and maximum | Increase in ratio |
|---|---|---|---|---|
| Denmark (DK) | 12/21/2000 (0.76) | 2/12/2021 (1.12) | 53 days | 47% |
| United Kingdom (UK) | 1/17/2021 (2.61) | 3/3/2021 (2.95) | 45 days | 13% |
| United States (US) | 1/20/2021 (1.68) | 3/6/2021 (1.81) | 45 days | 7.7% |
| South Africa (ZA) | 12/27/2021 (2.66) | 3/10/2021 (3.35) | 73 days | 25% |
This increase of the ratio for the UK variant (DK< UK, US) is in line with the reported increases virulence of the new strain [4].
| Confirmed cases and deaths since Jan 2020 | Confirmed cases and deaths since November 1st 2020 |
|---|---|
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It is seen that there has been an uptick in confirmed cases for Brazil, Finland, Norway and Sweden in February 2021.
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As of Jan 29, 2021 there were 315 cases of the UK strain detected in the US . The leading states with 14 or more cases were CA (92 cases), FL (92), NY (22), Michigan (17) and GE (14). and as of Feb. 23, there were 1,881 reported cases of this (UK) variant in 45 U.S. states. [3].
As seen below there is a slight increase in. the ratio deaths/confirmed. However, it is unclear whether this is related to the virus change, since unlike the countries above, there are similar large changes earlier in 2020 which would have had nothing to do with the UK variant.
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References:
[1] https://www.today.com/health/how-many-strains-covid-19-t207173, updated Feb 28, viewed March 9, 2021
[2] https://www.cnbc.com/2021/01/15/new-covid-variant-first-found-in-uk-could-become-dominant-strain-in-us-by-march-cdc-says-.html viewed March 9, 2021
[3 ] https://bestlifeonline.com/new-covid-strain-states/
[4] https://www.reuters.com/article/us-health-coronavirus-variant-britain/uk-covid-19-variant-has-significantly-higher-death-rate-study-finds-idUSKBN2B213E