In another study done on eggs, it pointed out that eggs may contain large amounts of salmonella, both on the shell and inside the egg.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/caged-poultry-items-unsafe-humans
[2] http://admin.indiaenvironmentportal.org.in/category/author/sanjay-kaw
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poultry
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/national-environmental-engineering-research-institute-neeri
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/communicable-diseases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/avian-flu
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/haryana
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/antibiotic
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health