Title: Prevention of Mosquito-borne Diseases
1Prevention of Mosquito-borne Diseases
Central Health Education Unit June 2007
2Prevention of mosquito-borne diseases
- Work of the Government
- To prevent mosquito-borne diseases effectively
relies on the support and co-operation of both
public and private sectors with the government. -
3Work of the Government
-
- Publicity and Health Education
- Provide health education on personal protection
against mosquito-borne diseases for general
public. - Publicize personal protection against
mosquito-borne diseases for travellers. - Latest updates on dengue fever for healthcare
workers through periodicals, mails and internet.
4Disease surveillance
- Dengue fever, Japanese encephalitis and Malaria
have been brought into one of the statutory
notifiable diseases. - web-based Central Notification Office (CENO
On-line)
5Disease surveillance
- Contact tracing, epidemiological investigations
on disease outbreaks. - Liaise with relevant department, e.g. Food and
Environmental Department for following up control
measures. - Collaborate with other departments and Hospital
Authority in formulating response measures to
prevent local spread of Dengue fever.
6Disease surveillance
- Maintain close liaison with nearby regions and
oversea countries. - Make announcement to general public on reported
cases and disease situation of nearby regions and
remind public of preventive measures.
7Prevention of mosquito-borne diseases
8Personal Protection
- The best protection is to avoid being
- bitten by mosquitoes by paying
- attention to the following
- Avoid staying in dark, outdoor
- places such as brushwood, pavilions,
- or the shade of a tree during the
- hours when Aedes albopictus is
- active.
9Personal Protection
- Avoid going out in the hours when Aedes
albopicuts feed or wear light-coloured,
long-sleeves clothing and trousers.
10Personal Protection
- Install mosquito nets to doors and windows so
that mosquitoes cant get in.
11Personal Protection
- Accommodation should have air-conditioners or
mosquito nets - Hang mosquito screens around your bed
- Use of mosquito coil
12Personal Protection Choosing the insect
repellents
- DEET containing products, such as repellents,
anti-mosquito patches and spray are generally
most effective to avoid mosquito bites. - Citronella, Soybean oil and 3-N-Butyl-N-acetyl-a
minopropionic acid containing products also have
mosquito repellent effects. - Portable ultrasonic devices are less reliable
when compared with DEET.
13Safety tips on using repellents that contain DEET
(1)
- Avoid applying high DEET
- concentration products (i.e. gt35)
- Always read and follow the
- instruction label carefully
- before using repellents.
14Safety tips on using repellents that contain
DEET (2)
- As rare reports about application of repellents
with DEET associated with seizures in young
children, therefore the low concentration product
(10 DEET) should be used on children. - DEET is not recommended for use on infants less
than 2 months of age. They should use mosquito
net for health protection (e.g. infant carrier
draped with elastic edge mosquito net).
15Safety tips on using repellents that contain DEET
(3)
- Never use repellents over wounds or irritated
skin. -
- Apply the repellent on exposed skin surfaces
only - or on top of clothing. Do not use under
clothing. - Do not attach the anti-mosquito patches
directly - on the skin if it is specifically for clothing.
- Wash repellent-treated skin with soap and water
- when you come indoors.
- When using sprays, do not spray directly on face
- spray on hands first and then apply to face. Do
- not apply to eyes or mouth.
16Prevention of mosquito-borne diseases
Elimination of Mosquitoes
- The most effective way to eliminate mosquitoes
is to - Keep the environment clean.
- Remove stagnant water so that mosquitoes cant
breed.
17Possible Breeding Grounds of Aedes Albopictus (1)
Artificial containers Vases, saucers
underneath flower pots, trays underneath
air-conditioners, buckets jars and jugs of
earthenware, cement troughs, dumped tyres and
solid wastes such as cans, disposable cups and
bowls, and plastic bags.
18Possible Breeding Grounds of Aedes Albopictus (2)
Natural containers The hollow space inside a
bamboo, hollows of a tree and the rachis of a
leaf.
19Elimination of Mosquitoes
- Cover water containers
- tightly so that
- mosquitoes cant get in
- to lay eggs.
20Elimination of Mosquitoes
- Dispose of domestic wastes, empty bottles, cans
and lunch boxes properly into a covered bin to
prevent the accumulation of stagnant water.
21Elimination of Mosquitoes
- Change water for vases
- and aquatic plants at
- least once a week,
- leaving no water under
- the pots or in the
- bottom saucers.
- Scrub the container
- surfaces thoroughly to
- prevent mosquito eggs
- sticking on them.
22Elimination of Mosquitoes
- Remove or puncture any dumped tyres to prevent
the accumulation of stagnant water.
23Elimination of Mosquitoes
Keep ditches free from blockage.
24Elimination of Mosquitoes
Fill up uneven ground surfaces to prevent the
accumulation of stagnant water.
25Elimination of Mosquitoes
- Remove stagnant water immediately if mosquitoes
are found to be breeding. Use environmentally
friendly insecticides such as lavicidal oil if
necessary.
26Elimination of Mosquitoes
- In cultivation ponds, water tanks or large
containers, biological controls such as keeping
fishes to eat mosquito larvae would be a good
option.
27Mosquito Elimination Checklist (1)
- Are containers and other items where water could
accumulate disposed of properly? (For example,
throwing empty cans, foam rubber boxes, cups and
bottles into a covered bin) - Are water containers covered properly?
28Mosquito Elimination Checklist (2)
- Are ditches free from blockage?
- Are containers with stagnant water cleaned
regularly?(For example, vases, saucers underneath
flower pots, water storage device of an
air-conditioner, water tanks and pools) - Are uneven ground surfaces filled to prevent the
accumulation of stagnant water?
29Seek medical consultation immediately
- Having been bitten by a
- mosquito and displaying
- symptoms afterwards
- Falling ill, especially having
- a fever within one month
- after you have returned
- from abroad
30Enquiries/Websites
- Centre for Health Protection,
- Department of Health (www.chp.gov.hk)
- Hong Kong Travellers Health Service, Department
of Health (www.travelhealth.gov.hk/eindex.html) - 24-Hour Health Education Hotline, Department of
Health (2833 0111) - Food and Environmental Hygiene Department Hotline
2868 0000 - Website www.fehd.gov.hk
31Elimination of mosquito is the most effective
prevention strategy
Lets remove stagnant water and eliminate
mosquitoes
32Thank You!