Also shows that when the USA prevented people in nursing homes from even going outside (to get sun exposure) it was the worse thing they could have done. So the "lockdown" had direct impact on increasing likelihood of nursing home deaths.
Is this something you feel is supported by the article or is this your own synthesis? And if it's the latter what sources led you to that conclusion?
Conclusions: The datasets provide strong evidence that low D3 is a predictor rather than just a side effect of the infection. Despite ongoing vaccinations, we recommend raising serum 25(OH)D levels to above 50 ng/mL to prevent or mitigate new outbreaks due to escape mutations or decreasing antibody activity.