MONTHLY REPORT ON DENGUE ENTOMOLOGICAL SURVEILLANCE A publication of the National Dengue Control Unit

Ministry of Health, Sri Lanka

National Dengue Control Unit-Ministry of Health, Sri Lanka Public Health Complex, 555/5, Elvitigala Mawatha, Narahenpita, Colombo 05.

Tel : +94(0)112368416 / 7 Fax: +94(0)11 2369893 Email: ndcu2010@yahoo.com

Web : http://www.dengue.health.gov.lk

Vol.02 Issue No 01 January 2015

Flashback 2014

Dengue is regarded as the most complex vector borne

disease in Sri Lanka. The increasing trends of Dengue

are attributed to unplanned urbanization, improper waste

management, lack of human interest in source reduction

and may as well have been influenced by climate change.

National Dengue Control Unit (NDCU) coordinates the

activities pertaining to the control of Dengue illness.

Vector Surveillance and control, Inter-sectoral

collaboration, Social Mobilization and Outbreak

response are some of major focused aspects of the unit.

It is noted that year 2014 reported highest ever number

of dengue cases (47,246) while maintaining lowest case

fatality rate (0.21) during the year.

Since no vaccine or specific drug is available for

prevention of dengue infection, strengthening of the

integrated vector management is the key preventive

strategy. Appointing new Entomologists was an

important milestone for the system as they will be able to

streamline the vector surveillance activities at regional

level. Recruiting 50 Entomological Assistants for high

risk areas will enhance the surveillance activities at

divisional level.

One of the greatest achievements in 2014 was

establishing an Entomology Laboratory and refurbishing

the entire NDCU office area. Entomological surveillance

was strengthened through circulating consolidated data

as Monthly Report of Dengue Entomological

Surveillance (MRDS). Purchasing and distributing

adulticides and larvicides in a coordinated manner as

chemical control methods also strengthened , monitored

and evaluated in 2014.

Several workshops on integrated vector management

with the participation of more than 200 stakeholders

have been conducted successfully.

Case management is the key success in any disease.

Infrastructure facilities and training were given with the

collaboration of Epidemiology Unit to expand the e-

based disease surveillance system (DenSys) in major

hospitals. Steps were taken to establish High

Dependency Units (HDU) up to Base hospitals, to

purchase and distribute HDU equipment, 150 micro-

heamatocrit machines, 20 portable ultrasound scans and

175 adjustable beds.

Dengue, being a complex disease demands a multi-

pronged response that involves different ministries well

beyond the health sector. Therefore, two mosquito

control weeks were declared and two dengue prevention

days were included in National health weeks to sensitize

the community.

During the South Western monsoonal periods, the

Dengue situation in the country worsened in densely

populated Western Province. Therefore, 10 successful

mass scale Emergency Dengue Control Programmes

were conducted in Western Province with collaboration

other of Ministries of Presidential Task Force. Primary

objective was the source reduction in a short period by

door to door premise inspection by trained teams. More

than 2,000 military personnel and volunteers were

trained according to the standard check list on source

reduction exclusively for these programmes. A joint

operation centre was functioned at the Epidemiology

Unit with the participation of the respective officials

from Health, Tri-Forces, Civil Defence and Police.

While inspecting 958,271 premises, 16,897(1.76%)

premises were found to have larvae. Around 25,000

notices were issued and 6,712 legal actions were taken

during these activities. Daily reviews were conducted to

facilitate smooth functioning of the inspection at grass

root level. Initiating and keeping the momentum of

social mobilization by continuous mass scale programme

was given lot of collaboration and commitment towards

a common goal. This was the key success of this

programme. This novel Civil Military Coorporation (CIMIC) concept was published in the WHO Annual

Dengue Bulletin 2014(H A TISSERA et al 2014. Civil-

military cooperation (CIMIC) for an emergency

operation against a dengue outbreak in the western

province, Sri Lanka. Dengue Bulletin, 38, 64-77).

A new website was launched for NDCU to create

awareness of health professional and general public

(www.dengue.health.gov.lk) with collaboration of

I.C.T.A. In addition, public awareness was continuously

enhanced through broadcasting and telecasting

spots/leaflets by electronic and print media. A National

Review, Provincial Reviews and District Reviews were

conducted to evaluate the dengue situation in respective

areas.

2014 stands out as important milestone of the history of

the NDCU with great challenges and activities. We

appreciate the dedicated efforts of national level officers

and motivated field staff who face the challenges at

grass-root level

Contents Page

1. Flashback 2014 2. Island wide Entomological Surveillance Summary -2014 December

3. Entomological Forecast

1

2

2

Comments and contributions for publication in the MRDES Sri Lanka are welcome. Prior approval should be obtained from the NDCU before publishing data in this publication.

MRDES Sri Lanka - Vol.02 Issue No 01 January 2015

Table 1: Dengue Entomological Surveillance - 2014 December Summary

Pro

vin

ce

Dis

tric

t

No. of Premises Percentage Positivity by type of containers

Insp

ecte

d

Fo

un

d

po

siti

ve

%

Po

siti

ve

Dis

card

ed

rece

pta

cles

Wat

er s

tora

ge

con

tain

ers

Cem

ent

tan

ks

Co

ncr

ete

slab

Nat

ura

l

A/C

& R

P

& O

Wel

ls

Oth

ers

WP

Colombo 1,910 282 14.76 52% 1% 0% 3% 6% 1% 2% 0% 35%

Colombo MC 202 16 7.92 61% 3% 0% 0% 7% 0% 4% 0% 25%

Gampaha 1,510 242 16.02 46% 5% 0% 1% 17% 1% 2% 0% 28%

Kalutara 2,345 228 9.72 47% 10% 0% 1% 11% 1% 2% 0% 28%

NWP Kurunegala 750 32 4.26 44% 34% 0% 0% 3% 0% 6% 0% 13%

Puttalam 250 48 19.20 65% 7% 3% 0% 4% 0% 2% 0% 19%

UP Monaragala 2,652 333 12.55 42% 9% 6% 0% 2% 0% 1% 0% 40%

Badulla 634 71 11.19 24% 35% 9% 5% 3% 3% 1% 3% 17%

CP

Matale 1,231 119 9.66 37% 0% 25% 9% 8% 2% 0% 0% 19%

NuwaraEliya 103 2 1.94 50% 0% 0% 0% 0% 0% 0% 0% 50%

Kandy 1,720 104 6.04 38% 15% 10% 1% 2% 11% 4% 0% 19%

EP

Batticaloa 1,446 196 13.55 20% 16% 1% 0% 4% 5% 4% 11% 39%

Kalmunai 575 44 7.65 61% 6% 4% 0% 8% 0% 4% 11% 6%

Trincomalee 406 34 8.37 35% 33% 6% 0% 6% 0% 4% 0% 16%

Ampara 273 37 13.55 36% 16% 6% 0% 5% 0% 5% 1% 31%

NCP Anuradhapura 773 195 25.22 42% 12% 2% 1% 5% 0% 5% 0% 33%

Polonnaruwa 464 140 30.17 63% 11% 8% 2% 2% 0% 3% 0% 11%

SGP Kegalle 2,397 419 17.48 49% 16% 3% 2% 6% 4% 1% 0% 19%

Rathnapura 2,782 293 10.53 30% 7% 2% 0% 16% 5% 1% 0% 39%

SP

Galle 1 1 100.00 37% 12% 0% 0% 0% 0% 0% 0% 51%

Matara 567 79 13.93 48% 14% 4% 0% 4% 14% 4% 0% 12%

Hambantota 1,262 86 6.81 21% 24% 8% 0% 3% 0% 6% 0% 38%

NP

Jaffna 750 134 17.86 54% 17% 7% 5% 2% 0% 7% 0% 8%

Mannar 752 295 39.22 41% 44% 1% 0% 3% 0% 3% 0% 8%

Killinochchi 49 8 16.32 90% 10% 0% 0% 0% 0% 0% 0% 0%

Vavuniya 410 94 22.92 48% 21% 4% 0% 3% 0% 4% 1% 19%

Mullativu 165 42 25.45 36% 37% 5% 0% 0% 0% 0% 0% 22%

Sri Lanka 26,379 3,574 13.54 43% 15% 3% 1% 7% 2% 3% 1% 25%

Ad

dre

ss:

Director,

National Dengue Control Unit,

Public Health Complex,

555/5, Elvitigala Mawatha,

Colombo 05.

Address:

Key: This report is based on the weekly returns sent by Entomological Assistants (EAA) to N DCU. P & O- Ponds and Ornamentals; R

Refrigerators ; * No data ; Others- Tyres, Roof gutters and other miscellaneous places (eg. Tube wells, Earth pipes, Water meters, etc)

Entomological Forecast of High-Risk Areas RDHS MO(O)H RDHS MO(O)H

Colombo Boralesgamuwa, Dehiwala Kalmunai Kalmunai South, Pothuvil

Gampaha Katana, Biyagama Kurunegala MC Kurunegala

Kalutara Panadura Badulla Badulla

Kandy Pathadumbura

Kegalle Warakapola

Rathnapura Elapatha , Kolonna

Mannar Mannar, Pesalai

Matale Rattota

Puttalam Chilaw

NB:

Entomological

surveillance data for the

month of December

2014 done by MRI

entomology teams has

not received