Whilst it can mean enhanced biosecurity, intensive and globalised pig production (based on a narrowing genetic base) also potentially increases the risk of disease and its spread. It has been estimated that diseases can lower pig production efficiency by 10-15%, though financial losses can be much greater. Optimising pig herd health and production highlights the need to develop more preventative measures that can be implemented to tackle the increasing threat of disease. The book addresses recent developments in disease prevention, focussing on how farmers and producers can utilise feed management and housing to optimise pig health, as well as the role of vaccine development in preventing the onset of endemic and emerging diseases in pigs. Through highlighting the importance of understanding and identifying disease, the book showcases how our understanding of the mechanisms of transmission for some of the key porcine viral and bacterial diseases can be applied to optimise pig herd health and production.