A strict system for visiting experimentally inoculated and susceptible weaner pigs was used to examine the potential indirect transmission of classical swine fever (csf) virus by people wearing contaminated boots, gloves and coveralls. The inoculated and susceptible pigs were housed in separate compartments, between which the airborne transmission of the virus was impossible. A worst-case scenario with an intensive visiting protocol and no form of disinfection or hygiene was established. Fifteen days after the pigs were inoculated, infection was detected in one contact pig, and it was concluded that under the conditions of the experiment csf virus could be transmitted by contact with people.
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