Malaria maps: how to read travel risk information

Maps usually describe broad patterns rather than the risk at every street or hotel. Risk may differ between urban and rural settings, coastal and highland areas, or one season and another. Border regions can also have changing patterns, so use the map as a starting point and check current travel guidance.

A map does not predict whether one person will become ill. It also cannot identify the cause of a fever. Chills, fever and muscle aches after travel need clinical assessment, with malaria included in the discussion when the destination makes it relevant.

Write down every destination, including stopovers and excursions outside the main city. Take that itinerary to a travel health consultation. The clinician can discuss bite avoidance and whether malaria prophylaxis is appropriate for the places and activities planned.

Pack repellent and clothing that reduces exposed skin. Check screens, air conditioning and sleeping arrangements rather than relying on a map alone. Keep your itinerary accessible while travelling and after you return.

Get prompt medical assessment for fever during or after a trip to an area shown as having malaria risk. Urgent care is especially appropriate with confusion, unusual drowsiness, breathing problems, severe weakness, fainting or difficulty keeping fluids down. Explain where you were and when you returned before discussing less urgent causes.

Ask whether each stop on your route has relevant risk, whether a map is current enough for planning, which preventive measures suit you, and whether a blood test is needed if symptoms occur.