What should you know about Ronald Ross and malaria?

Malaria is an infection caused by parasites passed through the bite of an infected mosquito. Ross’s discovery connected the mosquito to the parasite’s life cycle, which changed how clinicians approached prevention. Symptoms can include fever, chills, headache, sweating, and muscle aches, but they may vary and can appear after travel to a malaria-risk area.

Malaria can become serious because parasites affect red blood cells and may interfere with the function of important organs. A symptom alone cannot confirm malaria; travel history, timing, examination, and testing all matter.

If you develop fever or chills during travel or after returning from a malaria-risk area, arrange prompt medical assessment and mention every country visited, dates of travel, mosquito bites, and any prevention medicines used. A blood test can help detect malaria parasites, and repeat testing may sometimes be considered by the clinician when symptoms continue.

Before future travel, discuss destination-specific prevention with a travel clinician. Mosquito-bite precautions and prescribed malaria prophylaxis may both be relevant; take prevention medicine only as directed for your itinerary and health needs.

Seek urgent medical care for fever after travel to a malaria-risk area, especially with confusion, fainting, breathing difficulty, repeated vomiting, severe weakness, yellowing of the skin, or a seizure. Malaria can worsen quickly, so do not wait for symptoms to become dramatic or assume they are ordinary flu.

Ask which tests are appropriate, whether testing needs repeating, how your travel history changes the assessment, and which mosquito precautions or prevention medicines fit your next trip.