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The CDC recently reported that between 2015 and 2017, nine cases of Salmonella infection have been linked to pet guinea pigs. Animals carrying the bacteria can appear clean and healthy, so officials recommend that veterinarians stress to their clients the importance of good hygiene measures.
More information on the outbreak of Salmonella associated with guinea pigs can be read in Veterinary Practice News. The full CDC report can be read here.More information on salmonellosis can be found in the MSD Veterinary Manual.