I agree it generally is not a good idea to feed the eggs back due to the risk of antibiotic residue...although, admittedly, the residue is typically pretty small and the actual additional exposure is probably pretty minimal...but it is standard rule to not feed the eggs back as it can prolong the withdrawal period.
As to worming, it will depend on what you use. I do know that Hygromycin B (my personal worming favorite) was sold for years in Rooster Booster Multi Wormer with Bacitracin, an antibiotic, as a feed additive for worming and controlling CRD (chronic respiratory disease).
But tetracyline is a much broader based antibiotic than bacitracin (which is no longer FDA approved in the US).
I usually prefer to worm without any broad based antibiotics as it is a double whammy to the intestines...first with the antibiotic (which also attacks the good gut bacteria) and the wormer which is targeting the gut to rid worms, depending upon the type you use (some are systemic), but ask your vet and do what she/he recommends. (I actually hit with the wormer first when diarrhea arises if there are no other symptoms as that usually is the cause, then use the antibiotics if the bird is not rallying).
After the antibiotics, it is a good idea to feed probiotics either in yogurt or in a probiotic chick packet placed in the water as well as apple cider vinegar (which is good to always keep in the water, plastic containers only). I would worm at that time to rebuild the gut which has been blasted by the antibiotics and likely further entrenched any worm situation. A healthy gut is a chicken's first line of defense on worms, and that gut health is dictated by the healthy flora which the probiotics and ACV help maintain.
LofMc
