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Prevention of Mosquito-borne Diseases

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Mosquito-borne Diseases Central Health Education Unit ... Liaise with relevant department, e.g. Food and Environmental Department for following up control measures. – PowerPoint PPT presentation

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Title: Prevention of Mosquito-borne Diseases


1
Prevention of Mosquito-borne Diseases
Central Health Education Unit June 2007
2
Prevention 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.

3
Work 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.

4
Disease 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)

5
Disease 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.

6
Disease 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.

7
Prevention of mosquito-borne diseases
  • Personal Protection

8
Personal 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.

9
Personal Protection
  • Avoid going out in the hours when Aedes
    albopicuts feed or wear light-coloured,
    long-sleeves clothing and trousers.

10
Personal Protection
  • Install mosquito nets to doors and windows so
    that mosquitoes cant get in.

11
Personal Protection
  • Accommodation should have air-conditioners or
    mosquito nets
  • Hang mosquito screens around your bed
  • Use of mosquito coil

12
Personal 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.

13
Safety 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.

14
Safety 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).

15
Safety 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.

16
Prevention 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.

17
Possible 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.
18
Possible Breeding Grounds of Aedes Albopictus (2)
Natural containers The hollow space inside a
bamboo, hollows of a tree and the rachis of a
leaf.
19
Elimination of Mosquitoes
  • Cover water containers
  • tightly so that
  • mosquitoes cant get in
  • to lay eggs.

20
Elimination of Mosquitoes
  • Dispose of domestic wastes, empty bottles, cans
    and lunch boxes properly into a covered bin to
    prevent the accumulation of stagnant water.

21
Elimination 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.

22
Elimination of Mosquitoes
  • Remove or puncture any dumped tyres to prevent
    the accumulation of stagnant water.

23
Elimination of Mosquitoes
Keep ditches free from blockage.
24
Elimination of Mosquitoes
Fill up uneven ground surfaces to prevent the
accumulation of stagnant water.
25
Elimination of Mosquitoes
  • Remove stagnant water immediately if mosquitoes
    are found to be breeding. Use environmentally
    friendly insecticides such as lavicidal oil if
    necessary.

26
Elimination 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.

27
Mosquito 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?

28
Mosquito 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?

29
Seek 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

30
Enquiries/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

31
Elimination of mosquito is the most effective
prevention strategy
Lets remove stagnant water and eliminate
mosquitoes
32
Thank You!
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