http://en.wikipedia.org/wiki/Listeria_monocytogenes
http://en.wikipedia.org/wiki/Listeria_monocytogenes
http://en.wikipedia.org/wiki/Salmonella
http://www.cdc.gov/salmonella/
http://en.wikipedia.org/wiki/Escherichia_coli_O157:H7
http://www.cdc.gov/nczved/divisions/dfbmd/diseases/ecoli_o157h7/
http://en.wikipedia.org/wiki/Campylobacter
http://www.cdc.gov/nczved/divisions/dfbmd/diseases/campylobacter/
http://en.wikipedia.org/wiki/Clostridium_perfringens
http://en.wikipedia.org/wiki/Cryptosporidium_parvum
http://en.wikipedia.org/wiki/Giardia_lamblia
http://www.cdc.gov/parasites/giardia/
http://en.wikipedia.org/wiki/Toxoplasma_gondii
http://www.cdc.gov/ncidod/dvrd/revb/gastro/norovirus.htm
http://en.wikipedia.org/wiki/Norovirus