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numerous new painful erythematous skin spots on his legs, arms and at the edge of the original large borderline lesion on his back. Otherwise the examination was normal (including chest). Investigations revealed a high CRP (86) and a raised white cell count (15.3, predominant neutrophilia). Multiple investigations were negative: Blood cultures, malaria films, HIV test, chest x-ray. METHOD The methods for this clinical case are outlined in the abstract. RESULTS The results of the investigations for this clinical case are as follows; a high CRP (86) and a raised white cell count (15.3, predominant neutrophilia). Multiple investigations were negative: Blood cultures, malaria films, HIV test, chest x-ray. CONCLUSIONS The conclusions of this clinical case are given as a clinical lesson in the second accompanying abstract as instructed 0043 HANSEN AND THE TWO IN ONE RULE Elinor MOORE and Diana LOCKWOOD Hospital for Tropical Diseases, University College Hospital, LOndon, United Kingdom Covering letter METHOD this abstract accompanies the principle abstact of the same title. RESULTS clinical pictures of the skin lesions will be presented. The patient was diagnosed with a type 2 immunological reaction within his leprosy treatment. He was managed effectively with the addition of thalidomide to his treatment. CONCLUSIONS The clinical lesson learnt from this patient with leprosy is that although having both a type 1 and a type 2 immunological reaction is rare, it is possible and needs to be identified to manage patients effectively. The case highlights well how to interpret the clinical signs to classify leprosy patients correctly. It also illustrates how type 2 reactions can present with systemic upset that may be misleading in reaching the correct diagnosis. 0044 ACUTE HEPATITIS E IS MORE COMMON THAN HEPATITIS A AMONG RETURNING TRAVELLERS PRESENTING TO SECONDARY CARE. Catherine COSGROVE, Michael BROWN, Margaret ARMSTRONG and Justin DOHERTY The Hospital for Tropical Diseases, London, United Kingdom Introduction. Acute viral hepatitis is a common cause of hospital attendance after foreign travel. Travellers and doctors are generally aware of hepatitis A and pre-travel immunisation is available and efficacious. No vaccine is available for hepatitis E and the number of cases caused by hepatitis E has increased recently. Methods. We examined the prevalence and aetiology of acute viral hepatitis among all patients presenting to the Hospital for Tropical Diseases between 2000-2008. Travel destination, demographics and laboratory features of patients with hepatitis A and hepatitis E were compared. Results. Sixty- eight patients presented in the last 8 years. The annual incidence of hepatitis A has remained stable, while that of hepatitis E has increased. Hepatitis E was associated with older age, travel to Indian Subcontinent and visiting friends and relatives status. Peak ALT was similar, but as many as 40% developed a prolonged INR (20% of hepatitis A patients) and hospital admission was 4 days longer. Conclusion. Hepatitis E is now the commonest cause of viral hepatitis in returning travellers in our centre, and is associated with laboratory features suggestive of more severe liver necrosis and longer hospital stay. In the absence of an effective vaccine, pre- travel advice to prevent infection and early investigation after symptom onset, are advised. METHOD Patients presenting to the Hospital for Tropical Diseases were prospectively coded for presenting problem between August 2000 to August 2008. Demographic, travel, laboratory and clinical data was collected from a prospective questionnaire filled in by the physician in attendance and additional retrospective data collected from case notes and electronic records. A case of hepatitis was diagnosed as an ALT >500 and/ or confirmatory laboratory tests revealing positive viral hepatitis serology in the appropriate clinical context. All inpatient cases of hepatitis were reviewed as well as all outpatient cases of hepatitis A and hepatitis E. RESULTS Hepatitis E was the commonest cause of patients presenting to the HTD with hepatitis. There were 26 cases in total with 68 cases of hepatitis. S447

Hansen and the two in one rule

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numerous new painful erythematous skin spots on his legs, armsand at the edge of the original large borderline lesion on his back.Otherwise the examination was normal (including chest).Investigations revealed a high CRP (86) and a raised white cellcount (15.3, predominant neutrophilia). Multiple investigationswere negative: Blood cultures, malaria films, HIV test, chest x-ray.

METHOD

The methods for this clinical case are outlined in the abstract.

RESULTS

The results of the investigations for this clinical case are as follows;a high CRP (86) and a raised white cell count (15.3, predominantneutrophilia). Multiple investigations were negative: Blood cultures,malaria films, HIV test, chest x-ray.

CONCLUSIONS

The conclusions of this clinical case are given as a clinical lesson inthe second accompanying abstract as instructed

0043

HANSEN AND THE TWO IN ONE RULE

Elinor MOORE and Diana LOCKWOODHospital for Tropical Diseases, University College Hospital, LOndon, United Kingdom

Covering letter

METHOD

this abstract accompanies the principle abstact of the same title.

RESULTS

clinical pictures of the skin lesions will be presented.The patient was diagnosed with a type 2 immunological reactionwithin his leprosy treatment. He was managed effectively with theaddition of thalidomide to his treatment.

CONCLUSIONS

The clinical lesson learnt from this patient with leprosy is thatalthough having both a type 1 and a type 2 immunological reaction israre, it is possible and needs to be identified to manage patientseffectively. The case highlights well how to interpret the clinicalsigns to classify leprosy patients correctly. It also illustrates how type2 reactions can present with systemic upset that may be misleadingin reaching the correct diagnosis.

0044

ACUTE HEPATITIS E IS MORE COMMON THAN HEPATITIS A AMONG RETURNING TRAVELLERS PRESENTING TOSECONDARY CARE.

Catherine COSGROVE, Michael BROWN, Margaret ARMSTRONG and Justin DOHERTYThe Hospital for Tropical Diseases, London, United Kingdom

Introduction. Acute viral hepatitis is a common cause of hospitalattendance after foreign travel. Travellers and doctors are generallyaware of hepatitis A and pre-travel immunisation is available andefficacious. No vaccine is available for hepatitis E and the number ofcases caused by hepatitis E has increased recently.Methods. We examined the prevalence and aetiology of acute viralhepatitis among all patients presenting to the Hospital for TropicalDiseases between 2000-2008. Travel destination, demographics andlaboratory features of patients with hepatitis A and hepatitis E werecompared.Results. Sixty- eight patients presented in the last 8 years. Theannual incidence of hepatitis A has remained stable, while that ofhepatitis E has increased. Hepatitis E was associated with older age,travel to Indian Subcontinent and visiting friends and relativesstatus. Peak ALT was similar, but as many as 40% developeda prolonged INR (20% of hepatitis A patients) and hospital admissionwas 4 days longer.Conclusion. Hepatitis E is now the commonest cause of viralhepatitis in returning travellers in our centre, and is associated withlaboratory features suggestive of more severe liver necrosis andlonger hospital stay. In the absence of an effective vaccine, pre-

travel advice to prevent infection and early investigation aftersymptom onset, are advised.

METHOD

Patients presenting to the Hospital for Tropical Diseases wereprospectively coded for presenting problem between August 2000 toAugust 2008. Demographic, travel, laboratory and clinical data wascollected from a prospective questionnaire filled in by the physicianin attendance and additional retrospective data collected from casenotes and electronic records. A case of hepatitis was diagnosed as anALT >500 and/ or confirmatory laboratory tests revealing positiveviral hepatitis serology in the appropriate clinical context. Allinpatient cases of hepatitis were reviewed as well as all outpatientcases of hepatitis A and hepatitis E.

RESULTS

Hepatitis E was the commonest cause of patients presenting to theHTD with hepatitis. There were 26 cases in total with 68 cases ofhepatitis.