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Table 1 Point prevalence malaria infection at study visits

From: Microscopic and submicroscopic Plasmodium falciparum infection, maternal anaemia and adverse pregnancy outcomes in Papua New Guinea: a cohort study

Study visit No infection
% (n)
Submicroscopic infection
% (n)
Microscopic infection
% (n)
Enrolment (n = 2190)
 P. falciparuma 90.2 (1976) 5.1 (111) 4.7 (103)
 P. vivax mono-infection 97.2 (2129) 2.2 (48) 0.6 (13)
Second study visit (n = 1015)
 P. falciparum 98.5 (1000) 0.7 (7) 0.8 (8)
Third study visit (n = 859)
 P. falciparum 97.8 (841) 1.1 (9) 1.1 (9)
Delivery—peripheral blood (n = 1936)
 P. falciparum 96.5 (1869) 1.5 (29) 2.0 (38)
 P. vivax mono-infection 98.3 (1904) 1.6 (30) 0.1 (2)
Delivery—placental blood (n = 1300)
 P. falciparumb 96.6 (1256) 1.1 (14) 2.3 (30)
 P. vivax mono-infection 99.5 (1293) 0.5 (7) 0.0 (0)
  1. a P. falciparum mono-infection or mixed infection with P. vivax (n = 12)
  2. b P. falciparum mono-infection or mixed infection with P. vivax (n = 1)