title: Salmonella enteritidis and Grade A shell eggs.
mesh_terms: D000368:Aged; D000818:Animals; D002645:Chickens; D004196:Disease Outbreaks; D004528:Egg Shell; D005511:Food Handling / Q000592:standards*; D006707:Homes for the Aged; D006801:Humans; D008396:Maryland; D009735:Nursing Homes; D012478:Salmonella Food Poisoning / Q000453:epidemiology* / Q000401:mortality; D012477:Salmonella enteritidis / Q000302:isolation & purification; D014481:United States