Explain the cycle of dengue.
Understand the Problem
The question is asking for an explanation of the dengue cycle, which involves the life stages of the dengue virus, its transmission, and the role of the mosquito vectors. This requires a comprehensive overview of the virus's life cycle and the factors involved in its spread.
Answer
The dengue virus spreads in a human-to-mosquito-to-human cycle through bites of the Aedes aegypti mosquito.
The cycle of dengue involves a human-to-mosquito-to-human transmission pattern. The dengue virus is transmitted to humans through the bites of infected Aedes species mosquitoes, primarily Aedes aegypti. After being bitten by an infected mosquito, the virus enters the human bloodstream and begins infecting host cells. The virus hijacks the host cell's machinery to replicate itself, eventually releasing new viruses that can infect more cells. If another mosquito bites the infected human, it becomes a carrier of the virus, perpetuating the cycle.
Answer for screen readers
The cycle of dengue involves a human-to-mosquito-to-human transmission pattern. The dengue virus is transmitted to humans through the bites of infected Aedes species mosquitoes, primarily Aedes aegypti. After being bitten by an infected mosquito, the virus enters the human bloodstream and begins infecting host cells. The virus hijacks the host cell's machinery to replicate itself, eventually releasing new viruses that can infect more cells. If another mosquito bites the infected human, it becomes a carrier of the virus, perpetuating the cycle.
More Information
Dengue fever has a seasonal pattern, and the most severe manifestations of the disease can include dengue hemorrhagic fever or dengue shock syndrome, which require immediate medical attention.
Tips
A common mistake is confusing the mosquito species; only specific species like Aedes aegypti and Aedes albopictus transmit dengue.
Sources
- Dengue Transmission | Learn Science at Scitable - Nature - nature.com
- How Dengue Spreads - CDC - cdc.gov
- Dengue virus life cycle: viral and host factors modulating infectivity - pmc.ncbi.nlm.nih.gov
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