Sydney: A faulty immune memory can trigger infections that may lead to cold sores and even cancer in some people, say researchers.
Lapses of immunological memory also explain the reactivation of infections responsible for cold sores, shingles, yeast infections, and possibly some forms of cancer. Katrina Randall, clinical immunologist and co-research team leader said: "Immunity normally lasts for years after we are immunised or infected because our immune system remembers the shape and `fingerprints` of an infecting microbe..." "When immunological memory wanes we become susceptible to infection again. For some vaccines like the tetanus vaccine this occurs after several years, and for many experimental vaccines their memory has so far proved just too short to be useful." The findings were published in the latest issue of Nature Immunology.
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