For some travellers. A parasite spread by the bite of a mosquito is the cause of this serious disease in humans.
Most infected people show the symptoms from 10 days to 4 weeks after infection. They experience high fever, sweating, headache, chills, yellowing of the eyes and skin and tremors, among others.
These parasites live in the blood, so they cannot be transmitted from person to person.
To prevent malaria you can protect yourself against mosquito bites: long-sleeve, light-coloured shirts and pants, bed nets, insect repellent and through medicine. In this last case, you will have to take the medicine some time before the trip, during the journey and also a few weeks after returning home. Ask your doctor.