EXPERIMENTAL OBSERVATION ON THE INCUBATION PERIOD AND RELAPSE PATTERN OF PLASMODIUM VIVAX IN GUANGXI
- VernacularTitle:广西间日疟原虫潜伏期和复发规律的实验观察
- Author:
Yiying YE
;
Zhenggong XU
;
Xin ZHAO
- Publication Type:Journal Article
- From:
Chinese Journal of Parasitology and Parasitic Diseases
1987;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
39 healthy volunteers were experimentally inoculated with Plasmodium vivax from Guangxi by mosquito bite, and 32 of them were successfully infected. 25 of the infected volunteers (78.1%) had a short incubation period (mean: 16.4 days) prior to the onset of malaria attack, while seven individuals had long-term incubation period of 238 to 314 days (mean: 274.7?29.3 days). Relapses occurred in all cases with short-term incubation period after a long latency without exception; most of them had l to 2 relapses, some, 3 relapses. Among the seven cases with long incubation period, only one relapse occurred in five, and the remaining two had no relapse at all. It was shown that although Guangxi was situated in subtropical zone, Plasmodium vivax there was characteristie of the temperate zone type. A comparison of Plasmodium vivax from Guangxi with those from south Yunnan and Henan suggested that they differ in the composition of sporozoite subpopulations classified arbitrarily according to the duration of development of bradysporozoites in hepatic cells.
