Immunity built up after dengue virus infection protects only poorly against reinfection by a virus of a different serotype, and second infections are often even more severe. A new study examines why (pages 921–927).
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Welsh, R., Rothman, A. Dengue immune response: low affinity, high febrility. Nat Med 9, 820–822 (2003). https://doi.org/10.1038/nm0703-820
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DOI: https://doi.org/10.1038/nm0703-820
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