Objective To analyze the characteristics of adverse reactions for inoculation of Haemophilus influenzae type b conjugate vaccine(Hib vaccine) from 2011 to 2016 in Henan Province,in order to evaluate the immunization safety related to Hib vaccine. Methods The adverse reaction data and vaccination doses of Hib vaccine from 2011 to 2016 in Henan Province were collected through the China Information Management System for Immunization Programming. The descriptive methodology was used in analysis of the data. Res...