Lymphatic filariasis control in Tanga Region, Tanzania: status after eight rounds of mass drug administration

Parasites & Vectors

Table 6 Circulating filarial antigen (CFA) in Standard 1 pupils from 10 rural primary schools in Tanga District

Time (number) of survey	No. pupils registered	No. examined (% of registered)	No. girls/boys (ratio)^a	Mean age in years (range)^a	No. positive for CFA (% of examined)	p-value for change in CFA prevalence from previous year^b
Nov-10 (7)	966	831 (86.0)	404/427 (0.95)	7.5 (6–12)	51 (6.1)	0.80
Dec-11 (8)	943	889 (94.3)	421/468 (0.92)	7.5 (6–11)	50 (5.6)	0.65
Sep-13 (9)	1124	990 (88.1)	492/488 (1.01)	7.6 (6–12)	23 (2.3)	< 0.001

Each year, the new intake of Standard 1 pupils in the 10 schools (Kiomoni, Mafuriko, Marungu, Kirare, Mapojoni, Pongwe, Kigandini, Maweni, Ziwani and Kange) was examined. Results from earlier surveys were given in [17],[18].
^aFor examined pupils.
^bPearsons chi-square test.

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