San Diego County is warning retail food facilities that may have received eggs from Happy Hens, a Ramona-based poultry farm tied to a local salmonella outbreak, according to East County Magazine.

The outbreak now totals 21 cases, including seven hospitalizations, up from 13 cases and four hospitalizations when it was first reported July 28. County investigators initially linked the outbreak to mayonnaise made by Ramona Naturals for its deli using raw eggs supplied by Happy Hens, but additional cases of the same salmonella strain unrelated to the market are under investigation.

The county is working with the California Department of Food and Agriculture and the California Department of Public Health. East County Magazine reported that the county's Department of Environmental Health and Quality has contacted retail food facilities that may have received Happy Hens eggs with reminders about storage, grading requirements and resale rules.

For Santee residents, the warning is a good reminder to cook eggs until both yolk and white are firm, discard cracked or dirty eggs, and wash hands, utensils and prep surfaces after handling raw eggs. The county says the local outbreak is separate from a multi-state Midwest outbreak.

Anyone with diarrhea, fever or abdominal cramps after eating undercooked eggs should seek medical advice and report the illness to the county Department of Environmental Health and Quality at (858) 505-6814 or through the county's online reporting form. Officials have not said how the eggs involved in the local outbreak became contaminated.