Lymphatic filariasis control in Tanzania: effect of six rounds of mass drug administration with ivermectin and albendazole on infection and transmission

BMC Infectious Diseases

Table 5 Circulating filarial antigen (CFA) prevalence in the study communities

Study population	Time (number) of survey	Survey population	No. examined (%)	No. positive (%)	p-value for difference in prevalence
Kirare	Nov-10 (7)	690	400 (58.0)	101 (25.3)	0.044*
	Nov-11 (8)	690	393 (57.0)	77 (19.6)
Kiomoni	Nov-10 (7)	504	386 (76.6)	74 (19.2)	0.041*
	Nov-11 (8)	504	312 (61.9)	52 (16.7)
Kisimatui	Nov-10 (7)	651	389 (59.8)	110 (28.3)	0.001*
	Nov-11 (8)	651	367 (56.4)	84 (22.9)
All 3 communities combined	Nov-10 (7)	1845	1175 (63.7)	285 (24.3)	< 0.001^#
	Nov-11 (8)	1845	1072 (58.1)	213 (19.9)

Results shown are from two hamlets of Kirare (Mtambuuni, Mashine), one hamlet of Kiomoni (Mabavu) and one hamlet of Kisimatui (Majengo) in survey 7 and 8. Results from all four hamlets of Kirare in survey 1-5 are given in [6] and in Figure 3.
* McNemar’s chi-square test for paired samples (n = 318, 289, 297 and 904 for Kirare, Kiomoni, Kisimatui and all three villages combined, respectively).
^# Pearsons chi-square test.