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Table 2 Plasmodium species as detected by nested PCR using DNA extracted from thick smears and filter-papers

From: Low sensitivity of nested PCR using Plasmodium DNA extracted from stained thick blood smears: an epidemiological retrospective study among subjects with low parasitaemia in an endemic area of the Brazilian Amazon region

Species detected Positive samples according to the blood storage device Statistical Analysis Positive samples by microscopic examination of TBS(%)
X TBS (%) FP (%) X2* p
P. falciparum 34 (9.2) 78 (21.1) 19.46 <0.001 27 (7.3)
P. vivax 11 (3.0) 36 (9.8) 5.99 <0.05 28 (7.6)
P. malariae 11 (3.0) 14 (3.8) 0.17 >0.05 0
P. falciparum/P. vivax 0 10 (2.7) 8.21 <0.05 07 (1.9)
P. falciparum/P. malariae 06 (1.6) 10 (2.7) 0.57 >0.05 0
P. vivax/P. malariae 0 13 (3.5) 11.28 <0.001 0
P. falciparum/P. vivax/P. malariae 0 04 (1.1) 4.02** >0.05 0
Total of positive samples 62 (16.8) 165 (44.7) 66.19 <0.001 62 (16.8)
  1. *Chi-square test Yates correction **Fisher exact test