A visit to a petting zoo can be a fun family outing, but it may not be without risks. A number of farm animals, including cows, sheep and goats, may be infected with E. coli O157:H7, a dangerous strain of this pathogen. Humans are at risk of contracting E. coli from physical contact with these animals.

According to a Rutgers University survey out today, consumers are still worried about eating spinach and other leafy green vegetables as a result of the E. coli outbreak and subsequent spinach recall last September.

“Clearly, the recall had a bigger effect on the public than just throwing away a few bags of spinach,” said William Hallman, Director of the Rutgers Food Policy Institute, which conducted the survey. “Consumers’ confidence in the safety of other produce seems to have been affected.”