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Vitamin D study #28 of 53
10/29 Analysis of outcomes based on serum levels
Walrand, W., medRxiv, doi:10.1101/2020.10.28.20221176 (Preprint)
The unexpected spectacular 2020 October COVID-19 boost in European countries correlated with the latitude, but not with the temperature
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Analysis of the increase in COVID-19 cases in European countries, showing no correlation between with temperature, but a significant correlation with country latitude.
Since UV radiation decreases earlier for higher latitudes, this supports the theory that low vitamin D levels increases COVID-19 risk.

Walrand et al., 10/29/2020, preprint, 1 author.
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