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Table 2 Description of parasitaemia by age, Magaria, Niger 2017–2018

From: Clinical diagnostic evaluation of HRP2 and pLDH-based rapid diagnostic tests for malaria in an area receiving seasonal malaria chemoprevention in Niger

AgeHigh transmission seasonLow transmission season
3–11 months
 P. falciparum parasitaemia, n/N (%)45/148 (30)34/557 (6)
 Median parasitaemia (IQR), asexual parasites/µl5851 (1209–31,423)490 (119–1576)
 Parasite density, asexual parasites/µl, n/N (%)
  < 2001/45 (2)13/34 (38)
  200–199914/45 (31)14/34 (41)
  2000–199,99928/45 (62)7/34 (21)
  ≥ 200,0002/45 (4)0/34 (0)
  Gametocytaemia, n/N (%)21/148 (14)21/557 (4)
12–23 months
 P. falciparum parasitaemia, n/N (%)58/166 (35)53/526 (10)
 Median parasitaemia (IQR), asexual parasites/µl12,092 (2273–48,385)444 (71–1983)
 Parasite density, asexual parasites/µl, n/N (%)
  < 2003/58 (5)22/53 (42)
  200–19999/58 (16)19/53 (36)
  2000–199,99945/58 (76)12/53 (23)
  ≥ 200,0002/58 (3)0/53 (0)
  Gametocytaemia, n/N (%)27/166 (16)27/526 (5)
24–35 months
 P. falciparum parasitaemia, n/N (%)79/129 (61)39/205 (19)
 Median parasitaemia (IQR), asexual parasites/µl16,858 (4039–66,324)2675 (197–18,673)
 Parasite density, asexual parasites/µl, n/N (%)
  < 2006/79 (8)10/39 (26)
  200–19999/79 (11)9/39 (23)
  2000–199,99959/79 (75)19/39 (49)
  ≥ 200,0005/79 (6)1/39 (3)
  Gametocytaemia, n/N (%)33/129 (26)19/205 (9)
36–47 months
 P. falciparum parasitaemia, n/N (%)32/51 (63)15/67 (22)
 Median parasitaemia (IQR), asexual parasites/µl46,571 (5571–113,900)1198 (190–2732)
 Parasite density, asexual parasites/µl, n/N (%)
  < 2000/32 (0)4/15 (27)
  200–19995/32 (16)5/15 (33)
  2000–199,99924/32 (75)6/15 (40)
  ≥ 200,0003/32 (9)0/15 (0)
  Gametocytaemia, n/N (%)7/51 (14)9/67 (13)
48–59 months
 P. falciparum parasitaemia, n/N (%)32/45 (71)14/52 (27)
 Median parasitaemia (IQR), asexual parasites/µl14,886 (2542–46,578)383 (167–1012)
 Parasite density, asexual parasites/µl, n/N (%)
  < 2001/32 (3)5/14 (36)
  200–19995/32 (16)7/15 (50)
  2000–199,99924/32 (75)2/50 (14)
  ≥ 200,0002/32 (6)0/14 (0)
  Gametocytaemia, n/N (%)7/45 (16)3/52 (6)