[Plasmodium prevalence and parasitic burden in blood donors of Brazzaville, Congo].

B Carme, D Kenmogne, N Copin, A Mbitsi
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Abstract

To assess the frequency of malaria-infected blood donations in Brazzaville (Congo) thick films from all blood donors (n = 12,375, minimum per month: 857, maximum per month: 1,295; sex ratio: 9.6) at the Brazzaville University Hospital were examined quantitatively for Plasmodium (screening threshold: 20/microliters of blood) over one year (1989). The overall prevalence rate for all species of Plasmodium was 8.5%. It varied according with age but not with sex. P. falciparum predominated (92%), followed by P. malariae (7%) and P. ovale (3%). For P. falciparum: 1--the prevalence rate was 7.8% but varied over the year from 4.8% in August (6.2% for the dry season on the whole) to 11.5% in March (9.6% for the rainy season); 2--the parasitic load, also variable according to the season, was over 600/microliters in 24% of the cases (i.e. 1.9% of all donations) and over 6,000/microliters in 15 cases (i.e. 1.6% of the cases). In conclusion the proportion of blood donations infected with P. falciparum (with a parasitic load > or = 20/microliters) varied in Brazzaville from 6% in the dry season to 10% in the rainy season.

[刚果布拉柴维尔献血者中的疟原虫流行率和寄生虫负担]。
评估布拉柴维尔(刚果)所有献血者的感染疟疾的献血频率(n = 12,375,每月最低:857,每月最高:1,295);性别比例:9.6)在布拉柴维尔大学医院进行了为期一年的疟原虫定量检查(筛查阈值:20/微升血液)(1989年)。各种疟原虫总流行率为8.5%。它随年龄而变化,但不随性别而变化。以恶性疟原虫为主(92%),其次为疟疾疟原虫(7%)和卵形疟原虫(3%)。恶性疟原虫:1-患病率为7.8%,但各年发病率不同,从8月的4.8%(旱季总体为6.2%)到3月的11.5%(雨季总体为9.6%);2——寄生负荷也随季节而变化,24%的病例超过600/微升(即占所有捐献病例的1.9%),15例超过6000 /微升(即占所有捐献病例的1.6%)。总之,在布拉柴维尔,感染恶性疟原虫(寄生负荷>或= 20/微升)的献血者比例从旱季的6%到雨季的10%不等。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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