TABLE 2.

Methodologies used in the recovery of Toxocara species ova from sand and soil

Reference	Sampling methods				Laboratory method
	Type*	Depth (cm)	Surface	Weight (g)	Pretreatment	Flotation	Sieving
18	?	?	?	?	?	?	?
19	Children	10	?	250	?	?	?
20	?	5	?	?	?	MgSO4 + KI	No
21	Random	Various	100 cm2	200	NaCl + water	Brine	No
22	Children	1	15 cm2	?	?	ZnSO4 + NaOH	No
8	?	12	?	75	Water	ZnSO4	No
23	Animal	?	?	450–2350	Water	NA	Yes
24	Random	8–10	3– 4 cm†	500–600	Water	NA	Yes
9	?	40	3.5 cm†	250–300	Water	NaCl	No
25	Children	15	?	1000	Water	KIHg	No
26	Systematic	10	?	250–300	Water + mesh	Saline	No
27	Animal	10	?	250	Hypochlorite sodium	NaCl	No
28	Systematic	Surface	?	1000	Tween 80	Sugar	Yes
29	Children	2	130 cm2	250	None	NaNO3	No
30	Random	1	1 m2	450	Tween 80	NaNO3	No
31	Systematic	Upper	1000 cm2	?	Water + mesh	NaNO3	No
32	Systematic	3	6 cm†	100–150	?	Sucrose	No
33	?	10	?	250–300	None	ZnSO4	No
34	?	Surface	?	10	?	ZnSO4	No
35	?	5	?	10	Teepol + sieve	ZnSO4	Yes
36	?	3	?	?	Tween 80	MgSO4 + KI	No
37	?	3	100 cm2	?	Tween 60	MgSO4 + KI	No
38	Systematic	?	?	250	Water	ZnSO4	No
39	Systematic	3	?	200	Tween 60	ZnSO4	No
40	?	?	?	50	Tween 80	MgSO4	No
41	?	0.5	15×15 cm2	?	Tween 60	NaNO3	No
42	Systematic	0.5–1	930 cm2	250	NaOH	ZnSO4	No
43	?	Upper	?	?	?	ZnSO4	No
44	Children	?	?	?	Tween 40	NaNO3	No
45	Animal	1	?	250	Tween 60	ZnSO4	No
46	Systematic	?	?	50	Tween 40	NaNO3	No
47	Systematic	1–2	?	40	Tween 40	NaNO3	No
48		0.5–1	500 cm2	250	N NaOH	ZnSO4	No

^*Method by which the sample was taken: children – from areas where children play; animals – from areas where animals are expected to defecate; systematic; random.

^†Diameter of sample.

? Indicates that this information is not provided in the publication. KI Potassium Iodide; KI Potassium Iodine; KIHg Mercury potassium iodide; MgSO₄ Magnesium sulphate; NaNO₃ Sodium nitrate; NaOH Sodium hydroxide; ZnSO₄ Zinc sulphate