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Table 2 Plasmodium spp. prevalence by microscopy and parasite density among study participants in Korhogo, northern Côte d’Ivoire and Kaedi southern Mauritania, 2014/2015, stratified by sex, age, fever status and season

From: Distribution of Plasmodium spp. infection in asymptomatic carriers in perennial and low seasonal malaria transmission settings in West Africa

Variable

Korhogo

Kaedi

n (Positive)

Prevalence (95% CI)

GMPD (95% CI)

n (Positive)

Prevalence (95% CI)

GMPD (95% CI)

Overall

6693 (832)

12.4 (11.7–13.2)

220 (199–244)

9165 (22)

0.2 (0.1–0.4)

229 (153–357)

Sex

 Male

2801 (370)

13.2 (12.0–14.5)

256 (223–295)b*

3612 (8)

0.2 (0.1–0.4)

199 (93–482)b

 Female

3892 (462)

11.9 (10.9–12.9)

195 (171–223)

5553 (14)

0.4 (0.1–0.4)

249 (144–449)

Age group (year)

  < 1

223 (22)

9.9 (6.6–14.6)*

158 (96–275)c*

175 (0)

  

 1–4

925 (111)

12.0 (10.1–14.3)

275 (205–375)

1376 (7)

0.5 (0.2–1.0)

275 (99–897)c

 5–9

1201 (197)

16.4 (14.4–18.6)

261 (212–326)

1908 (3)

0.2 (0.0–0.4)

180 (56–787)

 10–14

962 (160)

16.6 (14.4–19.1)

223 (178–280)

1301 (2)

0.2 (0.0–0.6)

651 (400–857)

 15–19

710 (89)

12.5 (10.3–15.2)

227 (170–307)

900 (1)

0.1 (0.0–0.6)

436 (29-465)

  ≥ 20

2672 (253)

9.5 (8.4–10.6)

178 (152–210)

3505 (9)

0.3 (0.1–0.5)

165 (97–292)

Fevera

 Yes

538 (83)

15.4 (12.6–18.7)d*

329 (229–487)b*

522 (1)

0.2 (0.0–1.1)

3497 (2072-4284)b

 No

5890 (673)

11.4 (10.6–12.3)

208 (188–232)

8372 (21)

0.3 (0.2–0.4)

205 (143–304)

Season

 Rainy

3266 (567)

17.4 (16.1–18.7)d*

236 (210–264)b*

4748 (3)

0.1 (0.0–0.2)d*

320 (32–608)b*

 Dry

3427 (265)

7.7 (6.9–8.7)

191 (160–229)

4417 (19)

0.4 (0.3–0.7)

218 (146–336)

  1. aOut of study participants, 265 (4%) and 271 (3%) did not have axillary temperature data in Korhogo and Kaedi, respectively; bObtained by Student’s t-test between groups, cObtained by ANOVA between groups; dObtained by Pearson’s χ2 test; * P < 0.05; CI Confidence interval; GMPD Geometric mean of parasite density (parasites/μl); n Number examined