| high prevalence of asymptomatic plasmodium vivax and plasmodium falciparum infections in native amazonian populations. | the epidemiology of malaria in 2 riverine localities in rondĵnia, brazilian western amazĵnia, was assessed by a 1-year study at portuchuelo, and a cross-sectional survey at riverine communities at rio machado (= ji-parana). plasmodium spp. infections were diagnosed by light microscopy and by polymerase chain reaction (pcr) amplification of ribosomal dna. pcr was 6-7 times more efficient than microscopy for detecting plasmodial infections. both plasmodium vivax and plasmodium falciparum infection ... | 2002 | 12224567 |
| retrospective study of malaria prevalence and anopheles genus in the area of influence of the binational itaipu reservoir. | the importance of hydroelectric dams beside the human interchange in the maintenance of malarious foci and the occurrence of the anopheles genus on the binational itaipu reservoir were the main points of this retrospective study. data were collected from existing registrations at national, state and municipal health departments and literature systematic overview, from january 1984 to december 2003. the occurrence of some outbreak of malaria, mainly by plasmodium vivax, and the prevalence of spec ... | 2005 | 15880218 |
| [malaria in the state of paraná, brazil]. | to collect data regarding registered cases of malaria in the state of paraná, attendance reports of suspected cases of malaria performed by fundação nacional de saúde, paraná regional center, were analyzed from january, 1994 through december, 1999. of 31,975 blood samples examined, 7.4% were positive: 86.4% for plasmodium vivax, 12.7% for p. falciparum, 0.04% for p. malariae and 0.9% for p. vivax and p. falciparum. as to the epidemiological classification, 84.5% represented heterochthonous cases ... | 2001 | 11340496 |