(June 23, 10:40 a.m.) The Food and Drug Administration has added 27 Mexican states and Mexico City to its list of approved sourcing areas for roma and red round tomatoes.

Those varieties have been implicated in a multi-state outbreak of Salmonella Saintpaul, and the FDA has advised consumers not to eat the products unless they are sourced from approved areas. Baja California Norte was cleared June 14, but the other areas in Mexico were not approved until June 20.

In addition to Mexico City, states added to the list include: Aguascalientes, Baja California Sur, Campeche, Colima, Chiapas, Chihuahua, Durango, Guanajuato, Guerrero, Hidalgo, México, Michoacán, Morelos, Nayarit, Nuevo León, Oaxaca, Puebla, Querétaro, Quintana Roo, San Luis Potosí, Sonora, Tabasco, Tamaulipas, Tlaxcala, Veracruz, Yucatán and Zacatecas.

At least two production areas — Jalisco and Sinaloa — have not yet been cleared.

The FDA has completed traceback investigations that have led the agency to several farms in Florida and Mexico.

David Acheson, the FDA’s director of food safety and security, stressed during a June 20 press briefing that none of the farms — which have not been identified — have been directly implicated. He said that while the tainted tomatoes likely originated in Florida or Mexico, they weren’t necessarily contaminated in either place.

He said FDA investigators, working in conjunction with public health officials in Florida and Mexico, will look at packing sheds, supplier warehouses and distribution centers in addition to the farms.

Nineteen Florida counties have been cleared in the investigation.