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Fever in returned travellers presenting in the United Kingdom: recommendations for investigation and initial
Victoria Johnston1, Jane M Stockley, David Dockrell
1Hospital for Tropical Diseases, Mortimer Market Centre, Capper Street, London, UK. victoria.johnston@lshtm.ac.uk
Abstract:
International travel is increasing. Most physicians and general practitioners will encounter returned travellers with fever and the majority of travel-related infection is associated with travel to the tropics. In those returning from the tropics malaria must always be excluded, and HIV considered, from all settings. Common causes of non-malarial fever include from Africa rickettsial diseases, amoebic liver abscess and Katayama syndrome; from South and South East Asia, enteric fever and arboviral infection; from the Middle East, brucellosis and from the Horn of Africa visceral leishmaniasis. Other rare but important diseases from particular geographical areas include leptospirosis, trypanosomiasis and viral haemorrhagic fever. North and South America, Europe and Australia also have infections which are geographically concentrated. Empirical treatment may have to be started based on epidemiological probability of infection whilst waiting for results to return. The evidence base for much of the management of tropical infections is limited. These recommendations provide a pragmatic approach to the initial diagnosis and management of fever in returned travellers, based on evidence where it is available and on consensus of expert opinion where it is not. With early diagnosis and treatment the majority of patients with a potentially fatal infection related to travel will make a rapid and full recovery.
Insights
Physicians should suspect tropical infections in returned travelers with fever, as many travel-related illnesses originate in tropical regions. Prompt diagnosis and treatment are crucial for recovery from potentially fatal travel-associated diseases.
Area of Science:
- Global Health
- Infectious Diseases
- Travel Medicine
Background:
- International travel is increasing, leading to a rise in returned travelers presenting with fever.
- A significant proportion of travel-related infections are acquired in tropical regions.
- Physicians and general practitioners must be prepared to diagnose and manage febrile illnesses in this population.
Purpose of the Study:
- To provide a pragmatic approach to the initial diagnosis and management of fever in returned travelers.
- To highlight common and rare geographically concentrated infections associated with international travel.
- To guide empirical treatment decisions when diagnostic results are pending.
Main Methods:
- Review of common and rare infectious diseases associated with travel to specific geographical regions.
- Consideration of differential diagnoses including malaria, HIV, rickettsial diseases, enteric fever, arboviral infections, brucellosis, and visceral leishmaniasis.
- Emphasis on evidence-based recommendations and expert consensus for management strategies.
Main Results:
- Malaria and HIV must be excluded in travelers returning from the tropics.
- Specific non-malarial fevers are prevalent in different regions (e.g., rickettsial diseases in Africa, enteric fever in Asia).
- Early diagnosis and treatment are associated with rapid and full recovery for most potentially fatal travel-related infections.
Conclusions:
- Fever in returned travelers necessitates a high index of suspicion for travel-related infections.
- Management should be guided by epidemiological probability and regional disease patterns.
- Timely intervention significantly improves patient outcomes, even for severe infections.
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