Abstract
An approach to identification of epitopes suitable for vaccine development has been to locate regions of malaria target antigens that are recognized by individuals with clinical immunity. This has applied to identification of T- and B-cell epitopes. It is now realized, however, that T cells from individuals without prior exposure to malaria can respond to malaria parasites, malaria proteins, and peptides copying protein sequences. Such observations raise questions about which epitopes we should be targeting for vaccine development, but also challenge our understanding of immunological memory. Such responses from non-exposed individuals may also be important in expression of disease symptoms.
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