If you go to the search box at the top of the page and search for 'dog poop' in this forum, you'll find extensive discussions on the topic. There is a recommended time to wait, but I don't know what it is off the top of my head. For fresh manure (cows, horses etc.) 90 days is recommended before planting. It may be different with potentially parasite-laden meat eater poop.

Dog feces can potentially contain any one of several parasitic worms or the eggs of them. Some sources recommend a minimum of 90 days before harvest while others state that dog, and cat, feces should never be allowed in food gardens. Keep in mind that the parasitic worm eggs can stay in the soil for a very long time. The length of time to allow when animal manures are use ranges from 90 to 120 days to harvest. From the article linked here, " Wait at least 120 days after applying raw or aged manure to harvest crops that grow in or near
the soil (root crops, leafy greens, strawberries). Wait at least 90 days for other crops."

http://extension.unh.edu/resources/files/Resource002114_Rep3119.pdf

Your best defense against them is to thoroughly wash the food before eating it.

kimmq is kimmsr