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Table 2 Prevalence of infection by P. vivax (Pv total), P. vivax gametocytes (Pv gam), P. falciparum (Pf total) and P. falciparum gametocytes (Pf gam) as determined by light microscopy and PCR. Microscopy data available only for cross-sectional survey (CS) 1, overall prevalence by PCR determined as 18S rDNA copies/μl by qPCR, gametocyte prevalence by PCR determined by RT-qPCR (pvs25 transcripts/μl)

From: High proportions of asymptomatic and submicroscopic Plasmodium vivax infections in a peri-urban area of low transmission in the Brazilian Amazon

 

CS1 Microscopy (n = 2010)

CS1 PCR (n = 2010)

CS2 PCR (n = 2073)

 

n

%

Median paras./μl

IQR

n

%

Median cop./transcr./μl

IQR

n

%

Median cop./transcr./μl

IQR

Pv total

32

1.8

195.0

60.0–555.0

86

4.3

21.8

6.0–246.4

70a

3.4

35.0

12.3–273.0

Pv gam

18b

1.0

60.0

30.0–60.0

43

2.1

11.4

3.8–85.1

30a

1.4

44.6

13.5–175.1

Pf total

11

0.5

240.0

90.0–600.0

15

0.8

151.8

8.1–681.3

1a

0.05

5.1

–

Pf gam

9b

0.4

150.0

60.0–270.0

14

0.7

434.9

40.0–1272.8

1a

0.05

154.8

–

  1. aIncluding one Pf/Pf mixed infection
  2. bOne slide was negative for asexual blood stages