Abstract: Vaccination is one of the most cost-effective public health interventions, preventing infectious diseases such as polio, measles, and diphtheria. The World Health Organization estimates that immunization saves approximately 3.5 to 5 million lives annually worldwide (WHO, n.d.). Despite this achievement, vaccine uptake remains challenged by misinformation, limited awareness, and unequal access to reliable health information. This article is based on practical experience from an online volunteering assignment under the United Nations Volunteers (UNV) platform in collaboration with UNICEF Tanzania and WHO Tanzania during the 2026 second-round polio vaccination campaign in Tanzania, which targeted approximately 6.79 million children under the age of 10 across seven regions: Mwanza, Geita, Mara, Shinyanga, Simiyu, Singida, and Tabora The study examines the role of digital awareness campaigns in supporting immunization efforts through coordinated communication on platforms such as Facebook, Instagram, X (Twitter), and LinkedIn. These platforms were used to disseminate verified health messages, enhance public awareness, and counter misinformation in real time. Findings suggest that coordinated digital engagement led by trusted institutions such as UNICEF and WHO significantly improves message reach, public awareness, and vaccine confidence. The involvement of online volunteers further amplified campaign visibility through structured digital engagement activities. Overall, the study highlights that effective vaccination communication in the digital era depends on trusted institutional messaging, strategic use of social media, and youth participation to strengthen public health outcomes.
George Hezron Fabian (Fri,) studied this question.