Dengue Fever, seasonal viral infection characterized by fever, headache, extreme pain in the joints and muscles, and skin rash. A more serious but less common form of the disease, dengue hemorrhagic fever (DHF), may cause severe and fatal internal bleeding. Dengue fever and DHF are caused by any of four different viruses, and are transmitted from one person to another by the female mosquito of two species of the genus Aedes. Outbreaks of the disease usually occur in the summer when the mosquito population is at its peak. The infection cannot be transmitted directly from person to person and not all people who are bitten necessarily contract the disease. Dengue fever and DHF occur in many tropical and sub-tropical areas in Asia, Africa, Central and South America.
The incubation period (time between infection and onset of symptoms) of dengue fever is five to eight days. The fever typically runs its course in six to seven days, but convalescence is usually slow. Treatment for dengue fever is directed at reducing symptoms.
The incubation period of Dengue hemorrhagic is two to seven days. In the early stages the symptoms are very similar to those of dengue fever. The second stage symptoms include nausea, vomiting, and abdominal pain. The onset of hemorrhagic symptoms rapidly follows—bleeding nose and gums, bruising easily, and sometimes internal bleeding. The amount of blood circulating through the body is reduced, sometimes producing shock, characterized by pale, cold extremities; a rapid, weak pulse; and falling blood pressure. Treatment for these symptoms is a standard fluid rehydration therapy in order to maintain blood pressure. If circulatory failure is not reversed, death may follow.
The most effective preventive measure is the use of mosquito repellent. As yet no successful vaccine for dengue fever has been developed. According to the WHO, dengue fever and DHF are among the most rapidly increasing insect-borne illnesses today. Several factors are believed to contribute to the wide spread of dengue fever. Inadequate water and waste treatment facilities, along with insufficient pest control measures, promote the rapid increase of mosquito populations in certain areas. In addition, dwindling public health resources cannot keep up with the needs of growing urban populations that are susceptible to infection.
Complicating matters further are societal changes. Increased international travel accelerates the spread of both new and old diseases: A person infected with an unusual virus on one continent can arrive—with the virus—on another continent in a matter of hours. Ships, planes, and trucks can transport disease-carrying organisms just as easily. In 1985 tires imported into Texas from Asia carried larvae of the Asian tiger mosquito, which is a carrier of dengue fever and other tropical diseases. Within five years, Asian tiger mosquitoes were living in 17 states. The WHO estimates that there are some 50 million cases of dengue infection worldwide every year.
Out and out, the Dengue conundrum has sprung up as a threat to our people and a challenge to health community. It is pouncing on innocent lives it is curable though. This is because our population is unconscious about the source or symptoms. This calls for the need of awareness campaigns. More than treatment, at this moment in time there is a dire necessity to educate people about preventive methods people ought to adopt. Asif J. Mir, Organizational Transformation
Traditional Control Systems - Traditional Control Systems are based on setting standards and then monitoring performance. These systems include three categories of controls: diagnostic ...
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