An infectious disease characterized by cycles of chills, fever, and sweating, caused by the parasitic infection of red b疟疾一种传染性疾病，症状为周期性地感到冷、热和发汗，病因是寄生于红血球的一种疟原虫属原生动物，这种动物通过已感染病菌的雌性疟蚊传播。