Addition of Funding Source

In the Viewpoint entitled “The True Cost of Measles Outbreaks During the Postelimination Era,”¹ published in the March 26, 2019, issue of JAMA, an additional funding source is being added. In the Funding/Support section, at the end of the section, the following should appear “; and by grant R01AI125405 from the National Institutes of Health.” In the Role of the Funder/Sponsor section, the section heading should be plural so “Role of the Funders/Sponsors” and the word “sponsor” should be “sponsors.” This article was corrected online.