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Infection and Immunity, April 2006, p. 2449-2452, Vol. 74, No. 4
0019-9567/06/$08.00+0 doi:10.1128/IAI.74.4.2449-2452.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.
St George's Vaccine Institute, St George's Hospital Medical School, London, United Kingdom,1 Fundação Ataulpho de Paiva/IOC-FIOCRUZ, Rio de Janeiro, Brazil,2 Center for Molecular Microbiology and Immunology, Imperial College, London, United Kingdom,3 Wellcome Trust Genome Campus, Sanger Institute, Cambridge, United Kingdom4
Received 30 August 2005/ Returned for modification 13 November 2005/ Accepted 23 January 2006
Oral immunization of healthy adults with 107 CFU BCG Moreau Rio de Janeiro was well tolerated and significantly boosted gamma interferon responses to purified protein derivative, Ag85, and MPB70 from previous childhood intradermal BCG immunization. Oral BCG offers the possibility of a needle-free tuberculosis vaccine and of boosting the protective immunity from intradermal tuberculosis vaccines.
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