Good Bacteria In Yogurt What Foods Can I Eat That Will Give Me "good Bacteria" Besides Yogurt?

What foods can I eat that will give me "good bacteria" besides yogurt? - good bacteria in yogurt

I go to school to become a nurse, and say you should eat 2 yogurt (good bacteria) per day, to avoid helping sick. I can not yogurt. I wonder whether there are other foods that have these so-called "good bacteria" in them, or vitamins or supplements that are with him.