疟原虫侵入人体后首先在肝细胞内长大成为裂殖子,使肝细胞破裂而释出。裂殖子进入血流并钻入红细胞,当红细胞破裂时引起发作。未经治疗的患者在发作数次后体内产生一定的免疫力,发作可自行停止。但经2～3月后免疫力下降而再次发作,这称为近期复发。距初次发病后半年以上再发作的称远期复发。 Plasmodium invades the human body first grows in the liver cells into merozoites, the liver cells rupture and release. The merozoites enter the bloodstream and drill into the red blood cells, causing the attack when the red blood cells rupture. Untreated patients in the attack several times the body produce a certain amount of immunity, the attack can stop on their own. However, 2 to 3 months after the decline in immunity and re-attack, which is called the recent recurrence. More than six months after the initial onset of recurrence of long-term recurrence.