In living memory, no epidemic has generated a medical, scientific, social, and political response as massive, rapid, and global as that of COVID-19, which quickly became a global public health emergency recognized by the World Health Organization in January 2020.1
The commemoration of major events takes many forms, including the issuing of postage stamps. It is a mass medium used to commemorate events or raise public awareness about topics of wide social interest or influence. Educational and financial messages about infectious diseases on stamps appeared in 1904 when Danish postal clerk Einar Holbøll developed the idea of raising money for tuberculosis by adding a surcharge to the sale of a “Christmas seal” stamp2 (eFigure 1 in the Supplement). With the rise of email the popular cultural significance of postage stamps has diminished, but they still remain a way for governments and nongovernment organizations to communicate on a broad scale and to raise funds.3