Funding for this research was provided by:
National Institute for Health Research (Health Protection Research Unit in Gastrointestinal Infections)
Text and Data Mining valid from 2019-01-05
Received: 25 September 2018
Accepted: 20 December 2018
First Online: 5 January 2019
Ethics approval and consent to participate
: Ethical approval was not required as these data were collected for public health surveillance under The Health Protection Legislation (England) Guidance 2010 [CitationRef removed]. No administrative permissions were required to access the raw data used in this study.
: Not applicable.
: The authors declare that they have no competing interests.
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