A two-year nationwide ICMR-VRDL study reveals that all four dengue serotypes (DENV-1 to 4) are now co-circulating across India, with nearly 7% of patients infected with multiple strains simultaneously. This hyper-endemicity raises the risk of severe disease and poses fresh challenges for future dengue vaccination programs, as vaccine effectiveness varies by serotype.
Exam Lens
Quick Exam Facts From News
1-Minute Revision
- ›Study Period: 2023–2025
- ›Samples Analyzed: 6,889
- ›Target this Data: Study period 2023-2025, 6,889 samples, 45 labs, 25 States/UTs, 7% concurrent infection rate.
- ›Target this Nodal Body: ICMR (Indian Council of Medical Research) and its VRDL network.
- ›Target this Concept: Dengue serotypes (DENV-1 to 4) and the link between secondary/concurrent infection and severe disease.
Mastered this topic? Test your knowledge with a full MCQ quiz.
Practice exam-style questions, track your score, and strengthen your recall.