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李華憲¹  楊柏林²  胡惠仙¹  汪文仁¹  王文俊²  李興亮¹王  翔¹  李崇珍¹  黃國珍¹

1．云南省瘧疾防治研究所 思茅 665000  2．中國預防醫(yī)學科學寄生蟲病研究所 上海 200025

全文發(fā)表于《中國寄生蟲學與寄生蟲病雜志》1994年12卷2期119-121頁

提要：滇南的實驗結(jié)果顯示，人工接種當?shù)亻g日瘧原蟲子孢子后，經(jīng)短潛伏期發(fā)病的38名志愿者，首次見蟲時間為8－13d，首次見蟲和臨床初發(fā)時的原蟲密度分別為0.2－1.6和0.6－4040個／ul。造成如此明顯差異的原因，似與蟲現(xiàn)期和臨床初發(fā)間的時間距離密切有關，表現(xiàn)為感染后臨床初發(fā)的時間越早，多數(shù)病例首次見蟲時的原蟲密度越低，反之則高。文中討論了這一問題在病原生物學和流行病學上的重要性。

關鍵詞：間日瘧原蟲，瘧原蟲出現(xiàn)前期，潛伏期

OBSERVATION ON PARASITE DENSITY IN THE EARLY STAGE OF VIVAX MALARIA

Li Huaxian, Yang Bailin, Hu Huixian, Wang Wenren, Wang Wenjun

Li Xianglian, Li Chongzhen, Huang Guozhen

1 Institute of Malaria prevention and Treatment of Yunnan Province, Simao  665000

2 Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, Shanghai  200025

ABSTRACT. Thirty-eight cases  were artificially infected with local Plasmodium vivax sporozoites and experienced onsets of acute attacks after a short incubation period.The parasite densities upon the patent of malaria parasites in the peripheral blood and the primary clinical onset were 0.2－1.6 and 0.6 －0.6－4040/ul，respectively. Such significant difference in parasitaemia level seems to be closely related to the interval between the initial parasitaemia and the first onset, as indicated by the fact that for the majority of cases, the earlier the appearance of clinical attack after sporozoite inoculation, the lower the parasite density at the beginning of the patent period, while primary onsets of later occurrence, in those with higher initial parasitemia. The biological and epidemiological significance of the evidence was discussed.

Key words：Plasmodium vivax, prepatent period, incubation period

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