Yes, once you have had malaria, it stays in your system your whole life. you always have the possibility of a recurrence.
Is Malaria Still A Recurring Disease?
Symptoms are fever, shivering, joint pain, vomiting, anemia, hemoglobinuria, retinal damage, and convulsions. Not a good thing to have happening to you, you get it with mosquito bites, and it can come back. Hope this helps you out.