Unravelling the nature of non-specific effects of vaccines-A challenge for innate immunologists

Kristoffer Jarlov Jensen, Christine Stabell Benn, Reinout van Crevel

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Epidemiological observations have shown that vaccines can influence morbidity and mortality more than can be ascribed to target-disease immunity. A growing number of immunological studies have helped identify possible biological mechanisms to explain these so-called nonspecific effects (NSE) of vaccines, including heterologous T-cell reactivity and innate immune memory or 'trained innate immunity', which involves epigenetic reprogramming of innate immune cells. Here, we review the epidemiological evidence for NSE as well as human, animal and in vitro immunological data that could explain these NSE, and discuss priorities for future epidemiologic and immunologic studies to further unravel the biology and optimize the benefits of current and new vaccines.
    Original languageEnglish
    JournalSeminars in Immunology
    Volume28
    Issue number4
    Pages (from-to)377-383
    Number of pages7
    ISSN1044-5323
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Vaccination
    • Trained immunity
    • Non-specific effects
    • Epigenetic

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