Risk of aerosol transmission of these diseases to humans is unknown, but it must be rare given the lack of reported human cases. Campylobacteriosis is a food-borne disease contracted through consumption of undercooked poultry, pork, or beef. Unpasteurized milk or untreated water can also be a source of human infection. E. coli is a food-borne disease. Erysipelas can cause a skin rash in humans in direct contact with infected swine, for example, butchers, farmers, and veterinarians.
Severe disease is rare.
Leptospirosis is spread in the urine of infected animals. Only people in close contact with infected urine are at risk. Pasteurella multocida causes respiratory disease in swine. Infection in humans is rare. Respiratory infection in pig breeders has been reported, but most human cases of Pasteurella multocida are linked to dog or cat bites.