Table 1.

Three regimens for DEC administration applied in different endemic areas of bancroftian and malayan filariasis

Regimen	Endemic extent	Target population	Dose
Selective treatment	hypro-bancroftian filariasis	microfilaraemia positive	3.0 g DEC over 3–5 days 4.2 g DEC over 7 days
Selective treatment	hypro- & meso- malayan filariasis	microfilaraemia positive	1.5–2.0 g over 2–3 days
Mass drug administration (usually combined with selective treatment)	hypro- & meso- bancroftian filariasis	> 5 years microfilaraemia-negative	3.0 g over 3–5 days
	meso- & hypro- malayan filariasis	> 5 years microfilaraemia-negative	1.0–2.0 g over 2–3 days
DEC-fortified salt	meso- & hypro- bancroftian filariasis	whole population	50 mg DEC/day/person 6 consecutive months (9.0 g in total)
DEC-fortified salt	hypro- malayan filariasis	whole population	50 mg DEC/day/person over 3–4 consecutive months (4.5–6.0 g in total)

DEC Diethylcarbamazine