An observational, retrospective, ecological database study which involves systematic screening of the national databases of Bogota, to study pertussis related morbidity and mortality in infants ≤ 12 months of age before and after introduction of pertussis maternal immunisation in Bogota, Colombia from January 2005-December 2014.
This study is being conducted to assess impact of maternal immunisation against pertussis in infants ≤12 months of age before and after introduction of pertussis maternal immunisation in Bogota, Colombia from January 2005-December 2014.