WASH Cluster – Vector Control
VC2
Session Plan
VC2 – Vector Control by Vector
Timetable
VC0 - Opening & Introduction
VC1 - Vector Control by Disease VC2 - Vector Control by Vector
45 mins
60-90 mins
60 mins
VC3 - Vector Control by
Prevention Method
90 mins
Session-at-a-Glance
Session Activities
Approx. Time
Instructional Activity
Fly Borne Diseases
15 mins
PowerPoint, group discussion &
feedback
Mosquito Borne Diseases
15 mins
PowerPoint, group discussion &
feedback
Rodent Borne Diseases
15 mins
PowerPoint, group discussion &
feedback
Other Arthropod
15 mins
PowerPoint, group discussion &
feedback
Total time
60 mins
Session Aims

To gain an understanding of the vectors which can transmit diseases and the diseases they
carry.
Session Objectives
By the end of the session the participants will:

Understand the geographical distribution of the different vectors

Recognize the main diseases spread by the vector

Understand key insect vectors breeding behaviour

List some of the methods of control and prevention
Session Materials

PowerPoint slides

Handouts
-
WHO disease factsheet on Onchocerciasis
Key Messages
Fly Borne

The tsetse fly carries sleeping sickness which is epidemic over much of southern Africa and
which results in death unless treated. Traps can be set which contain cow odour and the
colours blue and black.
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WASH Cluster – Vector Control
VC0

River blindness is transmitted by blackflies. The disease can disfigure and cause blindness
but it can be suppressed by a single dose of Invermectin annually.

Fly traps can be used to catch flies but they rarely rest in one place. Hygiene promotion is
important.
Mosquito Borne

Lymphatic Filariasis is endemic in 83 countries. It causes enlargement of limbs, genitals or
breasts.

Chichungunya is prevalent in Africa and South and South-East Asia.
outbreaks of Dengue.

Prevention of Mosquitoes is primarily through the promotion of insecticide treated nets
throughout the entire year. Indoor residual spraying of entire communities is helpful, though
not individual houses.
It often follows
Rodent Borne

Lassa fever is carried by lassa rats and causes 500 deaths a year.

Marburg has an unknown host. The symptoms start with sudden onset of muscle pain and
death occurs within 3-9 days.

Transmission of rodent borne diseases can be through inhalation of the virus, ingestion of
contaminated food or eating or handling the rats. They can also usually be transmitted
between humans. Treatment of the diseases is through supportive therapy.

There is a need for community teaching on rodent control particularly in avoiding having
them in the home.
Other Arthropods

Other arthropods include lice, fleas, bedbugs, ticks, rodent (mites), rodent (fleas)

To avoid body lice, which carry typhus amongst many other diseases, take care when
handling bedding.

Mites can cause scabies and other skin conditions
Facilitator Guidance

The facilitator should be tropical disease specialist with good practical field experience in
VBD control.

Read through all handouts and facilitator notes inserted below each power point slide.

Read papers referenced in power point presentations and the most recent published papers
on the epidemiology and control of VBDs.

Check for recent developments and interventions on the WHO website.
http://www.who.int/water_sanitation_health/en/
o
Lacarin, C.J and Reed, B (1999) Emergency vector control using chemicals
o
UNHCR (1997) Vector and Pest control in refugee situations
Session plan




Introduce the session explain learning objectives
Brainstorm the different diseases that are associated with the vector being
Clarify the means of transmission (mechanical, biting, parasitic).
Give an overview of the geographic spread of the vector. Refer to the area
training is taking place and ask participants if they have experience of living or
an area where the vector is prevalent.
Split the participants into small groups. Give each group the disease factsheet.
10 minutes to prepare feedback on one of the following
Session Plan – VC2
discussed.
where the
working in
Give them
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WASH Cluster – Vector Control

VC0
o Causes
o Signs and symptoms
o Control and prevention
Each group should then feedback to the larger group with facilitator filling in any areas
missed and clarifying points as necessary. Use the PowerPoint slides for supporting material.
Session Plan – VC2
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