A blue background bearing the white lettering: "Fragen Sie ihren Arzt, was am "AIDS-Test" positiv und negativ ist" [Ask your doctor what the "AIDS test" positive and negative is]; an advertisement by the Swiss Physicians [FMH] and Swiss Federal Office of Public Health [BAG]. Colour lithograph.

Credit

A blue background bearing the white lettering: "Fragen Sie ihren Arzt, was am "AIDS-Test" positiv und negativ ist" [Ask your doctor what the "AIDS test" positive and negative is]; an advertisement by the Swiss Physicians [FMH] and Swiss Federal Office of Public Health [BAG]. Colour lithograph. Credit: Wellcome Collection. In copyright