Acknowledgement to Reviewers of Vaccines in 2019.

The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal's rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not. In 2019, a total of 219 papers were published in the journal, with a median time to first decision of 21.27 days and a median time from submission to publication of 5.65 days. [Extracted from the article]