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The fresher your eggs are, the better they are. You can buy pasteurized eggs in some grocery stores and you can read more about egg safety here. Naturally, I would recommend that anyone pregnant, etc. avoid raw eggs just to be on the safe side.asteurized eggs are eggs that are cooked briefly at a high temperature and then cooled. The yolk must reach a temperature of about 138F. Eggs scramble at a much higher temperature, so it is possible to heat the yolk to pasteurize it without cooking the egg.
My understanding is that it's queso fresco specifically that has been implicated in numerous lysteria outbreaks over the years. (It's also my favorite cheese in the whole world so... sadness.) That said, it's also my understanding that most brands available in US supermarkets are pasteurized.