Skip to main content

Table 2 Asymptomatic parasite carriers by parasite density (microscopy) and age group comparing rain and dry season

From: Declining malaria parasite prevalence and trends of asymptomatic parasitaemia in a seasonal transmission setting in north-western Burkina Faso between 2000 and 2009–2012

  % asymptomatic carriers/total carriers 1-1,000 parasites/μl 1,000-2,500 parasites/μl 2,500-5,000 parasites/μl 5,000-10,000 parasites/μl > 10,000 parasites/μl
Rainy season       
0-4 years 68.1 (64/94) 80.6 (25/31) 61.5 (8/13) 75.0 (9/12) 76.5 (13/17) 42.9 (9/21)
(% asymptomatic carriers/total carriers)       
5-14 years 72.6 (170/234) 75.9 (101/133) 80.5 (33/41) 69.0 (20/29) 55.6 (10/18) 46.2 (6/13)
(% asymptomatic carriers/total carriers)       
15-44 years 86.4 (108/125) 86.8 (92/106) 81.8 (9/11) 100 (4/4) (3/3) (0/1)
(% asymptomatic carriers/total carriers)       
>45 years 86.2 (25/29) 84.6 (22/26) (2/2) (0/0) (0/0) (1/1)
(% asymptomatic carriers/total carriers)       
All 76.1 (367/482) 81.1 (240/296) 77.6 (52/67) 73.3 (33/45) 68.4 (26/38) 44.4 (16/36)
(% asymptomatic carriers/total carriers)       
Dry season       
0-4 years 92.5 (49/53) 90.9 (40/44) (2/2) 100 (4/4) (2/2) (1/1)
(% asymptomatic carriers/total carriers)       
5-14 years 93.2 (136/146) 94.0 (109/116) 100 (17/17) 83.3 (5/6) 100 (4/4) (1/3)
(% asymptomatic carriers/total carriers)       
15-44 years 96.3 (52/54) 96.0 (48/50) (3/3) (1/1) (0/0) (0/0)
(% asymptomatic carriers/total carriers)       
>45 years 100 (16/16) 100 (15/15) (1/1) (0/0) (0/0) (0/0)
(% asymptomatic carriers/total carriers)       
All 94.1 (253/269) 94.2 (212/225) 100 (23/23) 90.9 (10/11) 100 (6/6) 50 (2/4)
(% asymptomatic carriers/total carriers)