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Dengue fever is an acute viral illness that can occur from the point of view of symptoms and prognosis, in two distinct forms: classical dengue fever; dengue hemorrhagic fever, with or without shock. Areas at risk of dengue boso fever
Dengue Fever emorraagica is particularly common in the regions of South-East Asia and the Pacific, but outbreaks of this type have been reported in recent times, also from South America and the Caribbean region. What are the symptoms of dengue fever? The classic dengue fever:
benign boso form of the disease, in turn, may make symptoms more or less marked according to age: in young children is manifested in the form of mild febrile illness accompanied by a rash maculo-papular type (spots and bubbles slightly protruding on the floor of the skin); while the older kids and adults looks like an affection-type influenza like illness, with fever, headache, muscle and joint pains-bone (also called dengue fever), gastrointestinal disorders, with or without the appearance of the rash maculo -papular.
Sometimes in classical dengue hemorrhagic manifestations may occur mild form of loss of blood from the nose and gums, and bleeding under the skin point (petechiae). The form of dengue hemorrhagic fever: Dengue haemorrhagic boso fever is manifested by a trend in two phases. In the first phase you have sudden boso onset of fever, redness of the face, inapptenza, mild disorders affecting the gastrointestinal and upper respiratory tract. Following a period of patient has become afebrile, which in conjunction with the patient's condition may suddenly deteriorate with the appearance of profound weakness, irritability, pallor, cyanotic color, especially around the mouth, low blood pressure, weak and rapid pulse, skin rash. In this second phase are frequent hemorrhagic boso phenomena, from petechiae, bruising, epistaxis to, the loss of blood from the gums, with bleeding into the gastrointestinal tract (presence boso of blood in vomit and faeces).
The overcoming of infection by a dengue virus follows persistent immunity, but directed specifically towards that virus and not to the other three types. Here's how it transmits dengue fever:
The Aedes mosquitoes, unlike Anopheles (malaria mosquitoes trammettono) bite during daylight hours, with a maximum of activity in the two hours after sunrise and the hour before sunset. boso Incubation boso period
The incubation period of dengue, or the elapsed time between the puncture infecting and the appearance of clinical symptoms is similar for both the classical dengue that for dengue hemorrhagic fever, and can vary from 3 to 14 days, with an average of 5-7 days. Period of infectiousness Dengue is not transmitted to human transmission directly, but only through the medium of mosquitoes. People affected by dengue are infectious for mosquitoes to puncture them from just before the onset of fever for the duration of the febrile period (average 5-7 days). Once infected, mosquitoes boso remain so for the duration of their lives and may transmit the disease to offspring. Recommendations for travelers to endemic areas
The risk of contracting dengue fever during a trip abroad to endemic areas is usually modest and directly related to the duration of the stay. As there is still an effective vaccine, and it is not possible to implement a system of pharmacological prophylaxis as for malaria; the prevention of dengue mainly resides at the individual level adoption of personal protective measures, to be followed taking into account the habits "daylight" of these mosquitoes.
October 9, 2011
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