Asma Awan, Sohail Akhter, and Manoj Sharma (all Social and Behavioral Health) published a chapter tilted, “Applications of the Multi-Theory Model (MTM) of health behavior change for the acceptability of COVID-19 vaccines” in the book, “Vaccinations in 21st century: Challenges, technologies and social dynamics.” This chapter contrasts the Multi-Theory Model (MTM) with other frameworks like the Health Belief Model, Theory of Planned Behavior, and Social Cognitive Theory, and highlights how MTM-informed strategies—such as culturally tailored communication, mobile health approaches, and community involvement—can effectively boost vaccine acceptance. Awan and Akhter are Ph.D. students.