NEW : Salmonella outbreak has sickened 475 says WHO . Food Corp. of manufactures products suspected to contain salmonella . Brand - name frozen butters are not expected to be affected . WHO urges manufacturers to announce whether they use certain products .
NEW : Salmonella outbreak has sickened 475 says FDA . Peanut Corp. of America products found to contain salmonella . Brand-name peanut butters are not expected to be affected . FDA urges manufacturers to announce whether they use certain products .