Researchers are using generative AI tools to combat vaccine hesitancy, with a focus on personalised messaging based on personality traits.A study by Hang Lu at the University of Michigan utilized ChatGPT to create tailored vaccine messages for individuals.AI-generated messages targeted at extraversion traits were effective in reducing vaccine beliefs in participants.However, there are risks of AI reinforcing harmful beliefs if not carefully managed.Long-term belief change may require repeated exposure and reinforcement from trusted sources.AI has the potential to assist in creating customised health messages at scale, but human intervention remains crucial.The study highlights the transformation in targeted messaging with AI, emphasizing the need for ethical oversight in AI application.AI could be instrumental in combating misinformation in healthcare, but ethical considerations and biases must be addressed.Collaboration between AI and human input is essential to optimize public health communication and avoid reinforcing stereotypes.Community involvement, diverse datasets, and transparency standards are vital for responsible AI-generated content deployment in public health.