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Sun and fresh air key to beating the Virus, experience suggests.

Coronavirus cases have fallen dramatically in recent weeks, particularly in London, where Public Health England (PHE) modelling suggests fewer that 24 people a day are picking up the virus.  But can all the reduction be due to social distancing and lockdown measures?  Or might the onset of summer, and the brighter warmer weather be helping to suppress the virus?

Latest research suggests that coronavirus is following a very specific path, around the globe, leaving some countries unscathed while have a disproportionately devastating effect elsewhere.  None of the temperatures in badly affected cities dipped below 32 degrees during the height of the epidemic which might suggest a lower threshold beyond which the virus cannot survive.

Analysis of the previous outbreak of SARS in Hong Kong has shown that the number of daily cases was higher on days where the weather was cooler and research has proved that viruses are able to live far longer on surfaces where the weather is cold. Warmer weather also leads to few people huddled together indoors, so that the virus has less chance to jump from one person to another.

There is growing evidence that Vitamin D is protective against the virus and that people with chronically low levels may be at greater risk.

Researchers from Anglia Ruskin University compared the numbers of coronavirus cases to the average levels of Vitamin D for 20 European countries and found a significant correlation.  Italy and Spain have both experienced high mortality rates and scientists have found both countries have lower than average Vitamin D levels.  This is partly because people in southern Europe, particularly the elderly, tend to avoid the sun.