Vitamin D, explaining R and the 2 metre rule
R is one of the most important numbers of the pandemic. But how is it estimated? And is Vitamin D an under-appreciated weapon in the fight against Covid-19?
R is one of the most important numbers of the pandemic. But what is it? And how is it estimated? We return to the topic of testing and ask again whether the governments numbers add up. As the government encourages those who can鈥檛 work at home to return to their workplaces - we鈥檙e relying on social distancing to continue to slow the spread of the virus. But where does the rule that people should stay 2 metres apart come from? And is Vitamin D an under-appreciated weapon in the fight against Covid-19?
Podcast
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More or Less: Behind the Stats
Tim Harford investigates numbers in the news: are they always reliable?
