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  • Title: Helminthes could influence the outcome of vaccines against TB in the tropics.
    Author: Elias D, Akuffo H, Britton S.
    Journal: Parasite Immunol; 2006 Oct; 28(10):507-13. PubMed ID: 16965286.
    Abstract:
    Helminthes, infections widespread in the tropics, are known to elicit a wide range of immunomodulation characterized by dominant Th2 type immune responses, chronic immune activation as well as up-regulated regulatory T cell activity. Such a wide range of immunomodulation caused by helminthes may have an impact on the host's ability to cope with subsequent infections and/or may affect the efficacy of vaccination. Indeed studies conducted in humans living in helminth-endemic areas and in animal models showed that helminth infection makes the host more permissive to mycobacterial infections and less able to benefit from vaccination. These observations have fundamental practical consequences if confirmed by large and appropriately controlled clinical studies. Eradication of worms could offer an affordable, simple and novel means to reduce the burden of the tuberculosis problem that at the moment seems to be getting out of control in sub-Saharan Africa. This information would also be of great relevance in the design of vaccines against diseases of major public health importance, including malaria and HIV/AIDS.
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