Totally agree with you carrot and hamster & others.
Will add on the vitamin D side, we could be like Finland... they have had a total number of deaths of 400, give or take 1. If you extrapolate that up to the population of the UK, that would mean 5,200 deaths for 65 million people. Instead the number of deaths from covid in the UK is 58,000... per capita, the UK's deaths are ~ 10 times greater.
Finland is much more northerly, but they key difference is they fortify their food with vitamin D. Think of how the graphs for the UK covid cases dropped rapidly over the summer... vitamin D from sunshine. Again how surprising it is that Africa hasn't been ravaged by covid like the UK, US, Belgium etc have, despite its grinding absolute poverty and lack of health infrastructure. In the high sunshine tropical belt. Rich countries like Saudi have high cases because everyone is indoors in the middle of the day in air-conditioned homes/offices/malls etc. Plus they have sky high numbers of T2 diabetes, as because alcohol is completely banned they drink large volumes of sugary fizzy drinks instead as their "vice".
Whilst obviously the underlying causative agent is the sars-cov-2 virus, the thing that's driving the fast and dynamic spread is immuno-deficiency caused by hypovitaminosis D... vitamin D deficiency and insufficiency. If we as a population could raise our levels to the sufficient or replete serum levels, (75+ nmol/l and 100+ nmol/l) we could drop the R number to below one and quell the spread and the severity of the disease (and mitigate a whole host of non-communicable diseases at the same time, such as some types of cancers, depressions, auto-immune conditions, T2 diabetes etc). Win win & saves billions for a £10 per person per year intervention. Trillions if you count the economic impacts of lockdowns on businesses, economic output, government borrowing, health service costs, testing facilities, mental health impact of forthcoming recession/economic depression from unemployment/interrupted schooling/poverty.
We need to stop thinking of vitamin D as a vitamin, we need to think of it as a crucial pro-hormone that's essential for over 1000 genetic processes, not just the old-fashioned view of it for solely warding off rickets/osteomalacia/osteoporosis. It's an essential immuno-modulatory component and is essential for T cell development for a fully optimised immune system. Metabolic health = immunological health.
"Another reason vitamin D is important: It gets T cells going":
blogs.scientificamerican.com/observations/another-reason-vitamin-d-is-important-it-gets-t-cells-going/
Low down on Finland stats
blog.gruffdavies.com/2020/08/02/are-we-having-a-second-wave-of-stupidity-yes/
Bottom line: "If everyone is vitamin D sufficient, we will not have a second wave." (written in August)
Evidence Supports a Causal Role for Vitamin D Status in COVID-19 Outcomes:
www.medrxiv.org/content/10.1101/2020.05.01.20087965v3
Results: Our analysis confirmed a striking correlation between COVID-19 severity and latitude, and ruled out the temporal spread of infection as an explanation.
Conclusions: Our novel causal inference analysis of global data verifies that vitamin D status plays a key role in COVID-19 outcomes. The data set size, supporting historical, biomolecular, and emerging clinical research evidence altogether suggest that a very high level of confidence is justified. Vitamin D prophylaxis potentially offers a widely available, low-risk, highly-scalable, and cost-effective pandemic management strategy including the mitigation of local outbreaks and a second wave. Timely implementation of vitamin D supplementation programmes worldwide is critical with initial priority given to those who are at the highest risk, including the elderly, immobile, homebound, BAME and healthcare professionals. Population-wide vitamin D sufficiency could also prevent seasonal respiratory epidemics, decrease our dependence on pharmaceutical solutions, reduce hospitalisations, and thus greatly lower healthcare costs while significantly increasing quality of life.