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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