Urogenital schistosomiasis in Cabo Delgado, northern Mozambique: baseline findings from the SCORE study

Parasites & Vectors

Table 1 Prevalence and intensity of S. haematobium in first-year students (aged 5–8 years), 9–12-year-olds, 13–14-year-olds, and adults (aged 20–55 years) at baseline of a SCORE study in northern Mozambique

Age group (years)	No. of individuals examined	No. of individuals infected (%)^a	Intensity of S. haematobium infection
Age group (years)	No. of individuals examined	No. of individuals infected (%)^a	Arithmetic mean intensity (eggs/10 ml)^b	No. of heavily infected individuals (%)
Both sexes
5–8	7463	4709 (63.1)	58.2	1440 (33.8)
9–12	7317	4873 (66.6)	71.9	1633 (33.9)
13–14^c	5429	4010 (73.9)
20–55	4259	1910 (44.8)	23.9	300 (15.8)
Total^d	19,039	11,492 (60.4)	55.8	3373 (17.7)
Females
5–8	3196	1922 (60.1)	44.7	517 (27.1)
9–12	3013	1890 (62.7)	54.4	547 (29.0)
13–14^c	2276	1666 (73.2)
20–55	1329	560 (42.1)	22.0	88 (15.9)
Total^d	7538	4372 (58.0)	44.6	1152 (23.8)
Males
5–8	4261	2784 (65.3)	68.1	923 (33.2)
9–12	4239	2946 (69.5)	84.9	1086 (37.1)
13–14^c	3153	2344 (74.3)
20–55	2924	1349 (46.1)	24.8	212 (15.8)
Total^d	11,424	7079 (62.0)	63.12	2221 (26.7)

^aFor sexes combined, there was a significant difference in prevalence between age groups (P < 0.001) with the following sequence: 9–12 > 5–8 > 20–55 years (χ² test). Within every age group, males had higher prevalence of infection than females in 5–8, 9–12 and 20–55 years (P < 0.001, P < 0.001, P < 0.01, respectively)
^bFor sexes combined, there was no difference between the two groups of children (age group 5–8 and 9–12 years), but intensity of infection among children was significantly higher (P < 0.001) than adults (one-way ANOVA). There was no difference between genders among school children, but male adults had higher intensities than females (P < 0.02)
^cEligibility results: prevalence of haematuria by dipstick from a single urine sample from children aged 13–14 years
^dTotal only includes the microscopic urine filtration data from the cross-sectional analysis, and excludes eligibility data that was collected in 13–14 year-olds using reagent strips only

ISSN: 1756-3305