Dengue is a non-contagious disease i.e. it never transmits from one person to another. Dengue is primarily transmitted by the bite of an infected mosquito called Aedes Aegypti that is more active during the day.
When a mosquito draws a blood meal from the person infected with dengue, the virus migrates to the salivary glands of the mosquito. When this infected mosquito bites a human, the virus gets transmitted to the person. A. polynesiensis, A. albopictus and A. Scutellaris are other mosquito species that can transmit dengue fever.
Dengue patients are strongly advised to stay off blood donation as their infected blood can cause potential spread of the disease. Apart from this physical transfer of infected blood from the patient to a healthy person, dengue cannot spread from person to person. There has been no report of the spread of the disease being done through coughing, sneezing or by touch.
To prevent the threat of dengue infection, you can only depend on the precautions because as yet, neither is there a vaccine for the prevention of this disease nor any anti-viral drug for treatment. A dengue patient goes through two bouts of fever and must ensure that he/she is under mosquito netting until the fever subsides.
Since the outbreak of dengue fever is on the rise in India and other Asian countries, people need to be cautious during rainy season. Dengue may not be contagious but the risk of its spread increases manifold and is no less threatening. Prevention is the best cure.
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