Fig. 1: Weekly proportions of delayed doses by vaccine type before and after vaccine incident. | Communications Medicine

Fig. 1: Weekly proportions of delayed doses by vaccine type before and after vaccine incident.

From: Assessing the impact of the 2018 Changchun Changsheng vaccine incident on childhood vaccination in China

Fig. 1

a, b, c Respectively show the scenarios for overall delays, delays less than or equal to three months, and delays greater than three months. Data from 104 weeks before the vaccine incident to 44 weeks after the incident, with three lines in each figure representing DTaP doses (blue line), NIP doses excluding DTaP (green line), and non-NIP doses (orange line), respectively. Broken lines represent the observed proportions of delayed doses by week, and straight lines were fitted by a segmented generalized linear model (GLM) with pre-incident and post-incident trends. There are limited vaccination services available in Chinese New Year holidays: (1) weeks (−73, −70) for Chinese New Year in 2016; (2) weeks (−22, −19) for Chinese New Year in 2017; (3) weeks (29, 32) for Chinese New Year in 2018.

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