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Second Dengue Infection: Why It's Dangerous, Doctor Explains Risks
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News18•21-09-2026, 19:30
Second Dengue Infection: Why It's Dangerous, Doctor Explains Risks
- •Dengue is a growing concern amid erratic monsoon weather, with a vaccine still some time away.
- •There are four types of dengue (Den-1, Den-2, Den-3, Den-4); Den-2 and Den-4 are particularly dangerous.
- •While first infections are often mild, a second dengue infection significantly increases the risk of severe complications.
- •Second infections can lead to dengue shock syndrome, hemorrhage, severe platelet drop, and multi-organ failure.
- •Blood and plasma leakage can cause fluid accumulation in the lungs and abdomen, leading to increased shortness of breath.
Key Questions Answered
A second dengue infection increases the risk of severe complications like dengue shock syndrome, capillary leak syndrome, hemorrhage, multi-organ failure, and a severe drop in platelet count. Previous infection history raises vulnerability, especially during the critical phase.
There are four dengue virus types: Den-1, Den-2, Den-3, and Den-4. Infections involving the first and third types carry a lower risk of becoming critical, whereas the second and fourth types are very dangerous.
Contracting any one type of dengue virus builds lifelong immunity against that specific type. However, a person can still be infected by the remaining three types, which can lead to severe health risks.
