VC3C VC WASH Cluster – Emergency Training 1 Vector Control Module 3C Larviciding & fogging.

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VCWASH Cluster – Emergency Training

Vector ControlModule 3C

Larviciding & fogging

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VCWASH Cluster – Emergency Training

Larviciding VBDs

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VCWASH Cluster – Emergency Training

VBD Larviciding

• Can be effective in controlling larvae, as a public health tool for dengue control but use for malaria control should be limited to settings with temporary localised surface water breeding sites only.

• Larviciding large or multiple water bodies is very expensive and requires a large number of staff for potentially little impact

• Water supplies in emergencies (particularly acute phases) are rare and highly valued.

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VCWASH Cluster – Emergency Training

Dengue and chikungunya preventionLarviciding domestic water tanks and storage pots to kill

Mosquito larvae +

Rubbish clearance to remove other mosquito breeding sites like car tires, old tins etc

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VCWASH Cluster – Emergency Training

Only use a larvicide that is safe for humans or animals. ABATE is WHO recommended for this.

For dengue prevention use of Abate sand granules in domestic water containers is effective.

Molluscocides can be used to control schisto.

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Fogging

• If residual spraying can be implemented quickly and effectively, there is probably no role for fogging or larviciding in the acute phase of an emergency

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VCWASH Cluster – Emergency Training

Fogging

Fogging (mix of diesel and insecticide) can be effective for the control of adult dengue vectors and house flies as these live outside, but is not effective against malaria vectors.

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VCWASH Cluster – Emergency Training

Fogging• Expensive as it must be repeated several times at Expensive as it must be repeated several times at

short intervals (e.g., 3 to 4 times in a week) short intervals (e.g., 3 to 4 times in a week) • Needs special equipmentNeeds special equipment• Possible role in crowded settingsPossible role in crowded settings• Follow immediately with IRS and/or ITNs for malaria Follow immediately with IRS and/or ITNs for malaria

& larvicide and garbage control for dengue& larvicide and garbage control for dengue• If residual spraying can be implemented quickly and If residual spraying can be implemented quickly and

effectively, there is probably no role for fogging or effectively, there is probably no role for fogging or larviciding in the acute phase of an emergency larviciding in the acute phase of an emergency