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Fraise, Adam P. (2009). "Preface to fifth edition". In Adam P. Fraise (ed.). Ayliffe's Control of Healthcare-Associated Infection: A Practical Handbook. Christina Bradley. Hodder Arnold. p. xi. ISBN978-1-4441-1307-5. Archived from the original on 17 April 2024. Retrieved 31 August 2020.
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"Garrod Lecture & Medal". The British Society for Antimicrobial Chemotherapy. 2021. Archived from the original on 2 November 2021. Retrieved 2 November 2021.
Geddes, Alasdair (September 2002) “Smallpox – Pathology and Clinical Features”Archived 4 September 2020 at the Wayback Machine. G7+ - Global Health Security Initiative (GHSI); Workshop, Best Practices in Vaccine Production for Smallpox and other Potential Pathogens. Paul-Ehrlich-Institut, Langen (Germany), P. 16