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Table 2 Summary Plasmodium species of human blood collected Laos and Vietnam by PCR analysis

From: Human infection with Plasmodium knowlesi on the Laos-Vietnam border

  Laos Vietnam
Microscopy (+) Microscopy (−) Microscopy (+)
No. of examined by PCR 35 75 25
No. of Plasmodium spp. positive by PCR 35 30 25
Detected Plasmodium species by PCR
P. falciparum 21 12 16
P. vivax 0 9 2
P. falciparum + P. vivax 5 6 4
P. falciparum + P. malariae 2 0 0
P. vivax + P. knowlesi 1 1 3
P. falciparum + P. vivax + P. malariae 1 0 0
P. falciparum + P. vivax + P. knowlesi 5 2 0
No. of PCR positive by age group
 ≤ 5 years 10 8 4
 6–14 years 14 9 5
 ≥ 15 years 11 13 16
No. of PCR positive by gender
 Male 16 10 14
 Female 19 20 11