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abstractpubmed· Abstract 2016· item PMID:26812174

Bordetella pertussis Strain Lacking Pertactin and Pertussis Toxin. A Bordetella pertussis strain lacking 2 acellular vaccine immunogens, pertussis toxin and pertactin, was isolated from an unvaccinated infant in New York State in 2013. Comparison with a French strain that was pertussis toxin-deficient, pertactin wild-type showed that the strains carry the same 28-kb deletion in similar genomes.