An experimental vaccine against malaria induces an immune response in people over the course of 1 year similar to that mustered over a lifetime by people living in malarial zones, a study in the November PLoS Medicine shows.
People exposed to malaria churn out countless antibodies against the disease-causing parasite, but these immune system proteins fail to induce instant immunity, says physician Pierre Druilhe of the Pasteur Institute in Paris.
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