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.
Further research into hazards posed by e-cigarettes Safety of nicotine-containing electronic cigarettes (e-cigarettes) cannot be confirmed because of the limited amount of published research in this area.