Social Media Tweet by @AngliaRuskin Published Oct. 15 2020 05:46 PM An ARU study found a relationship between average #VitaminD levels and the number COVID-19 cases and mortality rates, per head of population, across 20 European countries: https://t.co/xpzUorhqc9— ARU (@AngliaRuskin) October 15, 2020 16:46