ZURICH, Sept 19 (Reuters) - A vaccine produced by Novartis induces a protective antibody level against diverse strains of bird flu in individuals already vaccinated six years earlier, a study presented on Friday showed.
ZURICH, Sept 19 (Reuters) - A vaccine produced by Novartis induces a protective antibody level against diverse strains of bird flu in individuals already vaccinated six years earlier, a study presented on Friday showed.