Campylobacter most common pathogen found in dairy cattle A study conducted at 185 dairy farms found the Campylobacter bacterium at 91% of those farms. Out of the pathogens that were studied, this type of bacteria is the most common in dairy cattle.
Need for circular use of materials in construction Construction and demolition waste are being recycled on a large scale to use as a foundation for e.g. roads, but recycled building materials are hardly ever used in the construction of buildings.