| http://www.w3.org/ns/prov#value | - This database is publicly available at: http://www.pasteur-guadeloupe.fr:8081/SITVIT_ONLINE. ?? 2012 Elsevier B.V..Bordetella pertussis and vaccination: The persistence of a genetically monomorphic pathogenVolume 10, Issue 1, January 2010, Pages 36-49Frits R R MooiBefore childhood vaccination was introduced in the 1950s, pertussis or whooping cough was a major cause of infant death worldwide.
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