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Table 3 Plasmodium falciparum positivity rate by diagnostic test in blood samples collected during pregnancy and at delivery. RECIPAL study, 2014–2017

From: Prevalence and clinical impact of malaria infections detected with a highly sensitive HRP2 rapid diagnostic test in Beninese pregnant women

  Total (N specimens) During pregnancy At delivery
1st trimestera 3rd trimestera Peripheral blood Placental blood
Positivity rates in specimens tested with uRDT, cRDT and qPCR
 cRDT 11.6% (109/942) 15.7% (50/319) 10.6% (26/246) 8.2% (15/183) 9.3% (18/194)
 uRDT 16.2% (153/942) 24.8% (79/319) 13.4% (33/246) 11.5% (21/183) 10.3% (20/194)
 qPCR 18.3% (172/942) 33.5% (107/319) 15.0% (37/246) 9.8% (18/183) 5.2% (10/194)
Positivity rates in specimens tested with both microscopy and qPCR
 Microscopy 3.7% (34/926) 5.2% (16/310) 2.1% (5/244) 2.2% (4/180) 4.7% (9/192)
 Sub-microscopic infectionb 16.7% (149/992) 32.0% (94/294) 13.8% (33239) 8.0% (14/176) 4.4% (8/183)
  1. aMean (SD) gestational age (weeks of gestation): 11.7 (3) wg for specimens collected in the 1st trimester, 33 (3.2) wg for specimens collected in the 3rd trimester
  2. bqPCR positive but thick blood smear negative specimens