But then why does US chicken have the same Vaccine? I am curious. Apparently salmonella vaccine is not typically used in US egg production: http://www.nytimes

But then why does US chicken have the same Vaccine? I am curious. Apparently salmonella vaccine is not typically used in US egg production: http://www.nytimes.com/2010/08/25/business/25vaccine.html http://www.nytimes.com/2010/08/25/business/25vaccine.html