Peru dengue serotype shift: Type 3 dominates 91% of cases, vaccination drops 51.6%

In Peru, dengue serotype 3 has surged from 7.94% to 91.12% of identified samples since the 2024 epidemic, indicating a major serotype shift that could increase disease severity and case numbers. Vaccination coverage fell 51.6% in October, and the Colegio Médico warns of insufficient resources to handle a potential surge. The situation suggests heightened public health risk in the coming months, with uncertainty about the effectiveness of current vaccines against serotype 3.

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