The Covid-19 pandemic has caused devastation across the globe and the virus seems to be spreading unabated. It has been demonstrated that countries that are most affected are the ones that are in colder climates mainly and it is thought that the population of these countries who are vitamin D deficient may be one of the reasons why the virus is spreading so rampantly.

Iain Squire¹, Faiez Zannad², Javed Butler³, Gerasimos Filippatos⁴, Stuart J. Pocock⁵, Waheed Jamal⁶, Janet Schnee⁷, Karen Kimura⁸, Cordula Zeller⁹, Martina Brueckmann⁶,10 Stefan D. Anker¹¹, Milton Packer¹², for the EMPEROR-Reduced Trial Committees and Investigators

Christine Shi, Balrik Kailey and Kevin Fox

Imperial College Healthcare NHS Trust

Lakshmi Narayanan Rengarajan¹, Emma Ooi², Eka Melson1³, Lucretia Thomas⁴, Agnes Johnson⁴, Dengyi Zhou⁴, Lucy Wallett4, Sandip Ghosh¹, Parth Narendran^1,5, Punith Kempegowda^1,3

Narramore R; Willis R; Jepson R; Creagh F; Elliott J

Sheffield Teaching Hospitals

Melson E^1,2, Thomas L, Johnson A, Zhou D, Wallett L, Chandan JS, Al-Sheikhli J, Shyamanur B, Theivendran K, Coombs B, Bray AD, Jawahar N, James S, Kolenysk A, Reddy-Kolanu V, Salanke U, Ghosh S, Narendran P,; Kempegowda P

1. Ninewells Hospital, NHS Tayside, Dundee, UK
2. Institute of Metabolism and Systems Research, University of Birmingham, UK

Lazarus K¹, Abdalraheem A¹, Ross S¹, Zakout G², Hui E¹

1 Dept of Endocrinology & Diabetes, Northwick Park Hospital, London North West University Healthcare NHS Trust

2 Dept of Haematology, Northwick Park Hospital, London North West University Healthcare NHS Trust

Weronika Kozuch, Colin Dayan¹ , Stephanie Baldwin² , Argiris Asderakis² , Doruk Elker² , Laszlo Szabo² , Elijah Ablorsu²

1 Diabetes & Immunology, University Hospital of Wales
2 Transplant & Nephrology, University Hospital of Wales

Kharbanda S¹, Vanderpant N², Muralidhara K²

1 Milton Keynes University Hospital NHS Trust
2 London North West University Healthcare NHS Trust

Al Jumaah A¹, Crasto W²

1. University Hospitals of Leicester NHS Trust, Leicester, Leicestershire, United Kingdom
2. George Elliot Hospital NHS Trust, Nuneaton, Warwickshire, United Kingdom