Health Hygiene & Sanitation

Lesson 18 : Vector Management

Anti-Adult Measures

1. Anti-adult Measure – Chemical Control

Residual sprays:

The insecticide is sprayed in houses (indoor) where the mosquito rests on the wall.

DDT is the most commonly used insecticide 1-2 grams per sq. applied for 1-3 times in year.

In areas where the insecticide is resistant to DDT; malathion, propoxur(OMS-33) and to a lesser extent gamma-HCH (lindane) are used

Toxicant	Dosage in g/m2	Months (effect)
DDT	1to2	6to12
Lindane	0.5	3
Malathion	2	3
OMS-33	2	3

2. Anti-adult Measure – space sprays

• The following Space sprays are the newer developments:
• Fogging
• Ultra Low Volume Space Spray

3. Anti-adult Measure –Genetic Control

1. Sterile male technique
2. Cytoplasmic incompatibility
3. Chromosomal translocation
4. Sex distortion
5. Gene replacement

These use still in the research phase