The usual advise concerning raw eggs apply - avoid serving ice cream with raw eggs to pregnant women, toddlers and frail elderly. If you are concerned about using raw eggs (and do not have the opportunity to use pasteurised fresh ones, which sometimes can be found depending on where you live), the eggs could be omitted - particularly if the ice cream is to be eaten immediately, or at least very soon after churning, the recipe should still work out quite nicely.