Vaccinating livestock against common diseases is a form of direct climate action New research shows controlling common animal diseases effectively can be a sustainable way of tackling climate changeAnimal diseases have a devastating impact on livestock production. Every 100,000 sows spared from porcine reproductive and respiratory syndrome (PRRS) would prevent more than 420,000 tonnes of greenhouse gas emissions. This means the threat of a global outbreak – and the associated implications for greenhouse gas emissions – is never zero. Nevertheless, controlling endemic livestock diseases through vaccination reduces the risk of outbreaks across species and regional borders. Using vaccines to reduce livestock disease around the globe is one of the few innovations that improves all three – benefiting animals, people and the planet.