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How does dengue fever occur?

April 26, 2017dengue fever occur

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How does dengue fever occur?

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Dengue viruses spread to humans by the bite of female mosquitoes. These mosquitoes acquire the virus while feeding on the blood of an infected person. The virus circulates in the blood of infected humans for 2 –7 days leading to fever. Recovery from infection provided immunity against that particular virus but offers only partial protection against the other three viruses. Infact, subsequent infection increases the risk of a more complicated fever called as “dengue hemorrhagic fever”.