This concise volume spotlights an innovative computer-aided approach to linguistic analyses of HPV vaccination discourse on Twitter. The book features a new corpus linguistic technique, developed by the lead author, to studying patterns of language use in large datasets over time, known as Keyword Co-Occurrence Analysis. The authors explore the potential of social media platforms as rich areas of study for health communication and vaccination discourse, with this particular methodology allowing for detailed analysis of over half a million tweets from nearly 15 years of data. Given the increasingly influential role of social media platforms such as Twitter in shaping vaccine hesitancy, the volume offers readers a more nuanced understanding of their influence on attitudes around important health issues and a valuable resource in facilitating increased vaccine uptake. This book will be key reading for students, scholars, and policymakers interested in the intersection of language and health, in such areas as corpus linguistics, discourse analysis, health communication, and applied linguistics.