Extensive oral herpes simplex virus type 1 infection in a haematopoietic stem cell transplant recipient not responding to aciclovir

Department of Virology, Health Protection Agency Microbiology Services, Newcastle, UK Department of Haematology, Newcastle upon Tyne NHS Foundation Trust, Newcastle, UK Department of Microbiology, Newcastle upon Tyne NHS Foundation Trust, Newcastle, UK Antiviral Unit, Health Protection Agency Microbiology Services, Colindale, UK Department of Clinical Microbiology, St James’s Hospital, Dublin, Ireland