Malcolm Gracie "Calum" Semple is a British physician and academic.
This led to Semple interrupting his medical studies to read an intercalated bachelor's tripos in cell pathology, immunology and virology supervised by Lewis Wolpert, Ivan Roitt, and Richard Tedder.
He continued to study clinical virology as a doctoral student supervised by Richard Tedder and Dr Clive Loveday at University College London.
Semple led a clinical trial of Ebola convalescent plasma in Sierra Leone and a follow-up study of Ebola survivors with Dr Janet T Scott and Paul J Steptoe.
[1] He was appointed Officer of the Order of the British Empire (OBE) in the 2020 Birthday Honours for services to the Covid-19 response.