C W Holmes1, S Rahman2, D J Allen3, S Bandi4, J W Tang5. 1. Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester, UK. 2. Infection, Immunity and Inflammation, University of Leicester, Leicester, UK. 3. Virus Reference Department, National Infections Service, Public Health England, London, UK; Pathogen Molecular Biology Department, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, UK. 4. Leicester Children's Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK. 5. Clinical Microbiology and Virology, University Hospitals of Leicester NHS Trust, Leicester, UK; Infection, Immunity and Inflammation, University of Leicester, Leicester, UK. Electronic address: jwtang49@hotmail.com.