Zé Gotinha was created in Brazil in 1986 as the mascot of the national vaccination program, designed as a friendly white droplet to make immunisation less frightening for children. He quickly became a familiar face across Brazilian immunisation drives, especially during polio vaccination campaigns. Over time the character moved beyond official posters into popular culture, memes and social media, where Brazilians reuse him to joke about vaccines, boosters and health appointments. His longevity comes from that shared childhood recognition and his continued role in Brazilian public health.