Dengue is a viral disease caused by dengue virus (DENV, 1–4 serotypes)
Dengue is transmitted by bite of Aedes aegypti mosquito infected with any one of the four dengue viruses.
Aedes aegepti mosquito bites during daylight hours.
Person develops symptoms 3-14 days after the infective bite.
Patients who are already infected with the dengue virus can transmit the infection to other via Aedes mosquitoes during 4-5 days of onset of symptoms.
Dengue prevention and control depends on effective vector control measures.
Dengue fever starts with sudden onset of fever, followed by severe headache, pain behind the eyes, muscle and joint pain, and rash.
Dengue haemorrhagic fever has an acute onset of fever followed by abdominal pain, vomiting, bleeding. A small proportion of cases may show fatal disease as dengue shock syndrome.
Early clinical diagnosis by physician and proper clinical management lowers the fatality rates below1%.
Water from coolers and other small containers (plastic containers, buckets, used automobile tyres, water coolers, pet watering containers and flower vases) should be removed at least once in a week.
Appropriate larvicides should be used to water storage containers that cannot be emptied.
Water storages containers should be kept covered with lid.
Aerosol can be used during day time to prevent the bites of mosquitoes.
During transmission season (rainy season) all persons can wear clothes that cover arms and legs.
Mosquito nets or mosquito repellents can be used while sleeping during day time.
Personal protective measures such as window screens, insecticide treated bednets, coils and vaporizers can be used to prevent mosquito bites
Dengue patient should be prevented from mosquito bites. This will prevent further spread of dengue to other persons.
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