Table 2.

Age distribution and prevalence of helminths in population. A and B are single and mixed infection cases, respectively.

Age group	No. of faeces examined	Helminthic infection rates	Single infection rates	Single infection (A)									Mixed infections (B)
				Al		Tt		Hw		Tae		MIF
<15	18 (1.8%)	10/18 (55.6%)	9 (50.0%)	7 (38.9%)		2 (11.1%)		0		0		0	1 (5.6%)
15–25	178 (18.1%)	74/178 (41.6%)	68 (38.2%)	40 (22.5%)		11 (6.2%)		9 (5.0%)		4 (2.2%)		1 (0.6%)	6 (3.4%)
26–35	256 (26.0%)	95/256 (37.1%)	81 (31.6%)	37 (14.5%)		17 (6.6%)		14 (5.5%)		8 (3.1%)		4 (1.6%)	14 (5.5%)
36–45	257 (26.1%)	108/257 (42.0%)	98 (38.1%)	48 (18.7%)		13 (5.0%)		28 (10.9%)		9 (3.5%)		4 (1.6%)	10 (3.9%)
46–55	145 (14.8%)	66/145 (44.5%)	53 (36.6%)	28 (19.3%)		8 (5.5%)		7 (4.8%)		5 (3.4%)		5 (3.4%)	13 (9.0%)
56–65	86 (8.7%)	45/86 (52.3%)	40 (46.5%)	24 (27.9%)		6 (7.0%)		10 (11.6%)		1 (1.2%)		0	5 (5.8%)
>65	43 (4.4%)	22/43 (51.2%)	18 (41.9%)	5 (11.6%)		5 (11.6%)		3 (7.0%)		1 (2.3%)		3 (7.0%)	4 (9.3%)
Age group	No. of faeces examined	Mixed infections	Type of mixed infection (B)
			Al-Tt	Al-Hw	Tae-Al	Tt-Hw	Tae-Hw	Tt-MIF	Tae-MIF	Tae-Al-Tt	Al-Tt-Hw	Tt-Hw-MIF	Tae-Tt-Hw
<15	18 (1.8%)	1 (5.5%)	1 (5.5%)	0	0	0	0	0	0	0	0	0	0
15–25	178 (18.1%)	6 (3.4%)	3 (4.1%)	1 (0.6%)	0	1 (0.6%)	0	0	0	0	1 (0.6%)	0	0
26–35	256 (26.0%)	14 (5.5%)	2 (0.8%)	2 (0.8%)	2 (0.8%)	4 (1.6%)	1 (0.4%)	0	0	1 (0.4%)	2 (0.8%)	0	0
36–45	257 (26.1%)	10 (3.9%)	3 (1.2%)	2 (0.8%)	0	1 (0.4%)	0	0	0	0	3 (1.2%)	0	1 (0.4%)
46–55	145 (14.6%)	13 (9.0%)	5 (3.4%)	3 (2.1%)	1 (0.7%)	1 (0.7%)	0	1 (0.7%)	1 (0.7%)	0	1 (0.7%)	0	0
56–65	86 (8.7%)	5 (5.8%)	1 (1.2%)	3 (3.5%)	0	0	0	0	0	0	1 (1.2%)	0	0
>65	43 (4.4%)	4 (9.3%)	1 (2.3%)	0	0	0	1 (2.3%)	0	0	0	0	2 (4.7%)	0

Al: Ascaris lumbricoides; Tt: Trichuris trichiura; Hw: hookworm; Tae: Taenia spp.; MIF: minute intestinal flukes.