Fever or illness after travel: what information to share

Fever after a malaria-risk trip is urgent

Seek prompt medical assessment for fever during or after travel to a malaria-risk area and mention that risk immediately. Malaria can become serious quickly and can occur despite taking prevention tablets.

Give the regions visited, dates, antimalarial used and how consistently it was taken. Do not wait for a routine appointment if you are acutely unwell.

Share exposures, not just countries

Mention animal bites or scratches, freshwater swimming, healthcare work, sexual exposure, insect bites, rural stays, unpasteurised food and severe diarrhoea. These details help clinicians decide which conditions to consider.

Bring a list of medicines used during the trip, including antibiotics or malaria treatment bought abroad.

Know the emergency signs

Call emergency services for severe breathing difficulty, confusion, collapse, seizures or rapidly worsening illness. Seek urgent advice for persistent fever, significant dehydration, jaundice, unusual bleeding or blood in diarrhoea.

Make the travel history visible immediately

When contacting a healthcare service, state that you have travelled and give the countries, regions, dates and activities. Include stopovers, rural nights, freshwater swimming, animal bites, healthcare received abroad and any known insect exposure. This can change how urgently symptoms are assessed and which tests are considered.

Keep the itinerary and medicine list accessible after return. Another person should know where to find them if you become too unwell to explain the journey.

• ✓ Countries and exact dates
• ✓ Malaria-risk areas
• ✓ Animal or insect exposure
• ✓ Medicines and treatment received abroad

Treat fever after malaria-risk travel as urgent

Malaria can become serious quickly and can occur despite taking prevention tablets. Seek urgent medical assessment for fever or a flu-like illness after a malaria-risk journey and clearly mention the travel history. Do not wait for a routine appointment if urgent advice is indicated.

The relevant time window can extend after return, so do not dismiss the route because the holiday was weeks or months ago. A clinician must make the diagnosis; symptoms alone cannot distinguish malaria from many other illnesses.

Know other warning signs

Breathing difficulty, confusion, collapse, severe dehydration, unusual bleeding, persistent vomiting, jaundice, severe headache or rapidly worsening illness require prompt care. Use emergency services when symptoms are severe. For less urgent problems, NHS 111 can help direct care in England.

Tell the clinician about vaccines, malaria tablets, antibiotics or other medicines taken. Keep packaging or photographs from treatment abroad, and follow infection-control advice if diarrhoea, rash or respiratory symptoms could affect others.