1 Royal College of General Practitioners (RCGP) Research and Surveillance Centre (RSC), London; Department of Clinical and Experimental Medicine, University of Surrey, Guildford.
2 Real-time Syndromic Surveillance Team, Public Health England, London.
3 Head of Influenza and other Respiratory Viruses Section, Respiratory Surveillance Department, National Infection Service, Public Health England, London.
4 Department of Clinical and Experimental Medicine, University of Surrey, Guildford.
5 National Scientist Lead for Syndromic Surveillance, Real-time Syndromic Surveillance Team, Public Health England, London.