Table 2 Description of parasitaemia by age, Magaria, Niger 2017–2018
Age | High transmission season | Low transmission season |
|---|---|---|
3–11 months | ||
P. falciparum parasitaemia, n/N (%) | 45/148 (30) | 34/557 (6) |
Median parasitaemia (IQR), asexual parasites/µl | 5851 (1209–31,423) | 490 (119–1576) |
Parasite density, asexual parasites/µl, n/N (%) | ||
< 200 | 1/45 (2) | 13/34 (38) |
200–1999 | 14/45 (31) | 14/34 (41) |
2000–199,999 | 28/45 (62) | 7/34 (21) |
≥ 200,000 | 2/45 (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/µl | 12,092 (2273–48,385) | 444 (71–1983) |
Parasite density, asexual parasites/µl, n/N (%) | ||
< 200 | 3/58 (5) | 22/53 (42) |
200–1999 | 9/58 (16) | 19/53 (36) |
2000–199,999 | 45/58 (76) | 12/53 (23) |
≥ 200,000 | 2/58 (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/µl | 16,858 (4039–66,324) | 2675 (197–18,673) |
Parasite density, asexual parasites/µl, n/N (%) | ||
< 200 | 6/79 (8) | 10/39 (26) |
200–1999 | 9/79 (11) | 9/39 (23) |
2000–199,999 | 59/79 (75) | 19/39 (49) |
≥ 200,000 | 5/79 (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/µl | 46,571 (5571–113,900) | 1198 (190–2732) |
Parasite density, asexual parasites/µl, n/N (%) | ||
< 200 | 0/32 (0) | 4/15 (27) |
200–1999 | 5/32 (16) | 5/15 (33) |
2000–199,999 | 24/32 (75) | 6/15 (40) |
≥ 200,000 | 3/32 (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/µl | 14,886 (2542–46,578) | 383 (167–1012) |
Parasite density, asexual parasites/µl, n/N (%) | ||
< 200 | 1/32 (3) | 5/14 (36) |
200–1999 | 5/32 (16) | 7/15 (50) |
2000–199,999 | 24/32 (75) | 2/50 (14) |
≥ 200,000 | 2/32 (6) | 0/14 (0) |
Gametocytaemia, n/N (%) | 7/45 (16) | 3/52 (6) |