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Saturday, September 3, 2011

Dengue - the new threat : precautions to safeguard :

 Dear Comrades,
Of late, in the media, you must be reading or seeing a lot about the Dengue viral gripping parts of India. As per latest report published in “ The Samaj”, 24 people have died in the outbreak of the disease in Orissa. The people who died belonged to the worst-hit Angul district which has so far reported 450 cases. Out of 2866 blood samples tested so far, 1004 infected people were found positive.  Dengue has spread in 21 of the State's 30 districts.
Unfortunately, Com. Durga Ch. Mohanty, Organizing Secretary No. 1 of our Union and SPM, Kedargouri S O has been infected by Dengue and now under treatment in Capital Hospital, Bhubaneswar. Com Mohanty resides in the Postal Colony, Unit – IV, Bhubaneswar – 751 001. We are reproducing some clips of the colony area which give heavenly shelter to the dengue mosquitoes. The unnecessary weeds and tall grasses inside the colony campus filled with unused barrels, drums, jars, pots, buckets, flower vases, bottles, tins, tyres, pans etc. are creating favourable breeding places for the  dengue mosquitoes. Nobody is responsive towards the cleanliness of this residential area occupied by fully and highly educated mass.  It is not known if the BMC or the postal authorities will look after the cleanliness of the campus.
While we all wish speedy recovery of Com. Mohanty, we think it wise to post the following  mail  to give everyone a quick understanding of the viral and the necessary precautions to take to safeguard oneself and his family from the viral.
Please take time to read it carefully. Also, please share it with your friends and relatives, near and dear, do caution them on the seriousness and advice them to take necessary precautions.
 What is Dengue?
Ø   Dengue is a serious viral disease transmitted by the bite of the mosquito, Aedes aegypti.
Ø   Dengue occurs in two forms: dengue fever and dengue haemorrhagic fever.
Ø   Dengue fever is a severe, flu-like illness that affects older children and adults but rarely causes death.
Ø   Dengue hemorrhagic fever (DHF) is a second more severe form, in which bleeding and occasionally shock   occur, leading to death; it is most serious in children.
Ø   Persons suspected of having dengue fever or DHF must see a doctor at once.
Ø   Dengue haemorrhagic fever is a deadly disease and early diagnosis and treatment can save lives. Unless proper treatment is given promptly, the patient may go into shock and die.
               The symptoms of dengue fever vary according to the age and general health of the patient. Infants and young children may have a fever with a measles-like rash, which is difficult to distinguish from influenza, measles, malaria, infectious hepatitis and other diseases with fever. Older children and adults may have similar symptoms or symptoms ranging from mild illness to very severe disease
 Characteristics of Dengue Fever:
Ø   Abrupt onset of high fever
Ø   Severe frontal headache
Ø   Pain behind the eyes which worsens with eye movement
Ø   Muscle and joint pains
Ø   Loss of sense of taste and appetite
Ø   Measles-like rash over chest and upper limbs
Ø   Nausea and vomiting
Characteristics of Dengue Haemorrhagic Fever & Shock :
Ø  Symptoms similar to dengue fever
Ø  Severe and continuous stomach pains
Ø  Pale, cold or clammy skin
Ø  Bleeding from the nose, mouth and gums and skin bruising
Ø  Frequent vomiting with or without blood
Ø  Sleepiness and restlessness
Ø  Constant crying
Ø  Excessive thirst (dry mouth)
Ø  Rapid weak pulse
Ø  Difficulty in breathing
Ø  Fainting
 Who is most affected?
              Children, tourists and travelers are usually at a higher risk for Dengue transmission. However, adults living in endemic areas are in danger too.
When do Dengue mosquitoes bite?
Dengue mosquitoes bite in the early morning and the late afternoon.
Where does the Dengue mosquito live?
               The mosquito rests indoors, in closets and other dark places. Outside, they rest where it is cool and shaded. The female mosquito lays her eggs in water containers in and around homes, schools and other areas in towns or villages. The larvae, known as wigglers, hatch from the mosquito eggs, and live in the water for about a week; they then change into a round pupal stage for one or two days, after which the adult mosquito emerges, ready to bite.
 Where does the Dengue mosquito breed?
               Dengue mosquitoes breed in any water-catching or storage containers in shaded or sunny places. Favored breeding places are- Barrels, drums, jars, pots, buckets, flower vases, plant saucers, tanks, cisterns, bottles, tins, tyres, pans, plant saucers and roof gutters, refrigerator drip pans, catch basins, drains, soak-away pits, cement blocks, cemetery urns, plant leaf axils, bamboo stumps, tree cavities and a lot more places where rainwater collects or is stored.
How is Dengue spread?
              Dengue is spread by the bite of an infected female, Aedes aegypti mosquitoe which has got the dengue virus by taking a blood meal on a person who is ill with dengue. The infected mosquito then transmits the disease through its bite to other people who in turn becomes ill, and the chain continues. The diagram below, illustrates this action.  There is no way to tell if a mosquito is carrying the dengue virus, therefore people must protect themselves from all mosquito bites, which will also protect against malaria and other mosquito-borne diseases.
How can Dengue be prevented?
               As there is no drug to cure dengue or vaccine to prevent it, there are two key measures that can be applied to prevent the spread of Dengue.
Elimination of mosquitoe breeding places
Ø   Cover water containers -Tight covers on water storage containers, will prevent the mosquitoes laying their eggs there. If the cover is loose, mosquitoes can go in and out.
Ø   Septic tanks and soak-away pits -Cover and seal these, so that dengue mosquitoes cannot breed there.
Ø   Removal of rubbish -Garbage articles and other rubbish found around houses can collect rainwater. They should be removed or smashed and buried in the ground or burned, where this is permissible.
Ø   Biological control -Mosquito wigglers can be controlled by small larva-eating fish, such as guppies. These fish can be found in streams or ponds or obtained through pet shops. Bacterial pesticides will also kill mosquito wigglers.
Ø   Chemical control -Safe and easily used larvicides such as temephos sand core granules can be placed in water containers to kill developing wigglers.


Prevent mosquito bites
People can protect themselves from mosquito bites by using any of the following means-
Ø   Mosquito coils and electric vapour mats -Slow burning mosquito coils or electric vapour mats are effective in the rainy season, just after sunrise and/or in the afternoon hours before sunset, when dengue mosquitoes bite.
Ø   Mosquito nets -Nets placed over sleeping places can protect small children and others who may rest during the day. The effectiveness of such nets can be improved by treating them with permethrin (a pyrethroid insecticide) . Curtains (cloth or bamboo) can also be treated with insecticide and hung at windows or doorways, to repel or kill mosquitoes.
Ø   Repellents -Mosquito repellents can be applied to exposed parts of the body where mosquitoes bite. Care should be taken in using repellents on small children and the elderly.
Ø   Screens -Screens on windows and doorways are effective protection against the entry of mosquitoes in homes.
Ø   Protection of people sick with dengue -Mosquitoes become infected when they bite people who are sick with dengue. Mosquito nets and mosquito coils will effectively prevent mosquitoes from biting sick people and help stop the spread of dengue.

Source of information: A fact sheet on Prevention of Dengue by Division of Control of Tropical Diseases and Division of Communicable Diseases, World Health Organization
Courtesy :managementparadise.com

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