First it was peanut butter and peanut paste, and now salmonella has been found in pistachios. The nation's second-largest pistachio processor on Monday significantly expanded its recall of the nuts after federal investigators found salmonella bacteria in "critical areas" of its California facility.

Setton Pistachio of Terra Bella, CA is recalling all lots of roasted in-shell pistachios, roasted shell pistachios and raw shelled pistachios produced from nuts harvested in 2008. Last week Setton Pistachio recalled just a small portion of the 2008 harvest on a theory that it may have been contaminated by a sanitation mistake affecting only one or two production lines.

However, the FDA and California Dept. of Public Health investigated furter, taking hundreds of samples from the plant and its products for lab analysis. Government investigators revealed that they found salmonella in critical areas of the facility, but did not elaborate on the details.

Setton supplies 35 wholesalers and food manufacturers that repackage the nuts for retail sale, or use them as ingredients in other products. Therefore, federal officials say that it could be weeks before a full list of all affected products is available.

The FDA has started compiling a searchable database of recalled products. Some brands already included are Frito-Lay, Kirkland, Planters, and the 365 brand available at Whole Foods Market.

Since the full list of contaminated products isn't yet available and may not be for sometime, consumers should avoid eating pistachios or foods containing the nuts.

So far no illnesses have been linked back to the nuts from Setton. Two individuals filed complaints with the FDA saying they got sick after eating pistachios, but no definitive link to the nuts have been made.

Symptoms of salmonella infection include diarrhea, fever, and cramping. The infection is potentially fatal in young children, the elderly, and those with weakened immune systems.

The pistachio industry has set up a website, http://www.pistachiorecall.org which lists products that are NOT affected by the recall. They are hoping to avert the confusion caused by the peanut industry recall earlier this year, when sales dropped significanly after salmonella was traced to a Georgia peanut firm.