Malaria mostly spreads to people through the bites of some infected female Anopheles mosquitoes. Blood transfusion and contaminated needles may also transmit malaria . The first symptoms may be mild, similar to many febrile illnesses, and difficulty to recognize as malaria . Left untreated, P. falciparum malaria can progress to severe illness and death within 24 hours. Everything to know about malaria - Signs, symptoms , causes, risk factors, treatment, and prevention of this disease. Clinical presentation Infection with malaria parasites may result in a wide variety of symptoms , ranging from absent or very mild symptoms to severe disease and even death. Malaria disease can be categorized as uncomplicated or severe (complicated). In general, malaria is a curable disease if diagnosed and treated promptly and correctly. All the clinical symptoms associated with malaria are caused by the asexual erythrocytic or blood stage parasites. When the parasite develops in the ... Malaria Malaria is a potentially life-threatening illness caused by parasites. You get it through the bite of an infected mosquito. It’s most common in parts of the world that are hot and humid, like Africa and parts of Asia. It can cause flu-like symptoms that can progress to severe illness if not treated.