Howard Fischer Uppsala, Sweden   A patient with yaws prior to and two weeks after a single injection of benzathine penicillin. 1950s. From Kingsley Asiedu, Christopher Fitzpatrick, and Jean Jannin, “Eradication of Yaws: Historical Efforts and Achieving WHO’s 2020 Target.” PLoS Negl Trop Dis 8(9), 2014: e3016, https://doi.org/10.1371/journal.pntd.0003016. Via Wikimedia. CC BY 4.0. “Our Doc…